Lancom 1721 VPN Manual
Læs nedenfor 📖 manual på dansk for Lancom 1721 VPN (76 sider) i kategorien Router. Denne guide var nyttig for 11 personer og blev bedømt med 4.5 stjerner i gennemsnit af 6 brugere
Side 1/76
LANCOM 821+
LANCOM 1711+ VPN
LANCOM 1721 VPN
쮿 Handbuch
쮿 Manual
. . . c o n n e c t i n g y o u r b u s i n e s s
LANCOM 821+
LANCOM 1711+ VPN
LANCOM 1721 VPN
© 2009 LANCOM Systems GmbH, Wuerselen (Germany). All rights reserved.
While the information in this manual has been compiled with great care, it may not be deemed an assurance of product
characteristics. LANCOM Systems shall be liable only to the degree specified in the terms of sale and delivery.
The reproduction and distribution of the documentation and software included with this product is subject to written per-
mission by LANCOM Systems. We reserve the right to make any alterations that arise as the result of technical develop-
ment.
All explanations and documents for registration of the products you find in the appendix of this documentation, if they
were present at the time of printing.
Trademarks
Windows®, Windows Vista™, Windows XP® and Microsoft® are registered trademarks of Microsoft, Corp.
The LANCOM Systems logo, LCOS and the name LANCOM are registered trademarks of LANCOM Systems GmbH. All other
names mentioned may be trademarks or registered trademarks of their respective owners.
This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit http://www.openssl.org/ .
This product includes cryptographic software written by Eric Young (eay@cryptsoft.com ).
This product includes software developed by the NetBSD Foundation, Inc. and its contributors.
This product includes the LZMA SDK written by Igor Pavlov.
Subject to change without notice. No liability for technical errors or omissions.
LANCOM Systems GmbH
Adenauerstr. 20/B2
52146 Wuerselen
Germany
www.lancom.de
Wuerselen, January 2009
110642/0109
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Preface
4
EN
You are now reading the user manual. It contains all information you need to
put your device into operation. It also contains all of the important technical
specifications.
The reference manual can be found on the LANCOM product CD as an Acrobat
(PDF) document. It is designed as a supplement to the user manual and goes
into detail on topics that apply to a variety of models. These include, for exam-
ple:
The system design of the operating system LCOS
Configuration
Management
Diagnosis
Security
Routing and WAN functions
Firewall
Quality of Service (QoS)
Virtual Private Networks (VPN)
Virtual Local Networks (VLAN)
Backup solutions
LANCAPI
Further server services (DHCP, DNS, charge management)
This documentation was created by …
... several members of our staff from a variety of departments in order to
ensure you the best possible support when using your LANCOM product.
In case you encounter any errors, or just want to issue critics enhancements,
please do not hesitate to send an email directly to:
info@lancom.de
Our online services www.lancom.de are available to you around the
clock should you have any queries regarding the topics discussed in
this manual or require any further support. The area 'Support' will
help you with many answers to frequently asked questions (FAQs).
Furthermore, the knowledgebase offers you a large reserve of infor-
mation. The latest drivers, firmware, utilities and documentation are
constantly available for download.
In addition, LANCOM support is available. For telephone numbers and
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Preface
5
EN
contact addresses of LANCOM support, please see the enclosed leaf-
let or the LANCOM Systems website.
Information symbols
Very important instructions. Failure to observe this may result in damage.
Important instruction that should be observed.
Additional information that may be helpful but which is not required.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Contents
8
EN
9 Troubleshooting 65
9.1 No WAN connection is established 65
9.2 DSL data transfer is slow 65
9.3 Unwanted connections under Windows XP 66
9.4 Cable testing 66
10 Appendix 68
10.1 Performance data and specifications 68
10.2 Contact assignment 69
10.2.1 WAN interface 69
10.2.2 ADSL interface 69
10.2.3 ISDN S0 interface 70
10.2.4 Ethernet interface 10/100Base-TX 70
10.2.5 Configuration interface (Outband) 71
10.3 Declaration of conformity 71
11 Index 72
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 1: Introduction
9
EN
1 Introduction
The models LANCOM 821+, LANCOM 1721 VPN and LANCOM 1711+ VPN
are fully-featured routers that therefore also can be used in combination with
the integrated firewall for providing secure Internet access to a complete local
network (LAN).
The VPN option, which is either integrated already or can be activated subs-
quently, enables the LANCOM 1721 VPN and LANCOM 1711+ VPN to act as
powerful Dynamic VPN gateways for external offices or mobile users.
The LANCOM Router models offer each a DSL or ADSL connector and also an
ISDN connector. The ISDN line can be used as back-up for the DSL connection,
for remote management of the router, as basis for the office communication
via LANCAPI or for establishing VPN connections to remote sites with dynamic
IP addresses.
By using the Voice over IP function, these devices can transfer voice data over
broadband Internet connections as well.
1.1 How do ADSL and ADSL 2+ work?
ADSL (Asymmetric Digital Subscriber Line) is currently the most common tech-
nology for broadband Internet connections. Standard and almost ubiquitous
telephone lines (analog or DSL) are the basis for DSL data transfer to the near-
est telephone exchange. From here, the data is passed directly on to the Inter-
net over high-speed connections.
The asymmetric DSL variant ADSL was developed for applications where users
receive large amounts of data but transmit only small amounts, such as when
surfing in the WWW. ADSL subscribers can receive data at up to 8 Mbps
("downstream") and transmit at up to 800 kbps ("upstream"). ADSL providers
are able to reduce these maximum rates as they please.
To satisfy the strongly increasing demand for higher bandwidths, the stand-
ards ADSL 2 and ADSL 2+ provider higher data rates as a basis for applica-
tions such as video streaming or high-definition TV (HDTV) over the Internet.
Depending on the Internet provider, ADSL 2 devices support downstream data
rates of up to 12 Mbps, and ADSL 2+ devices support up to 24 Mbps. Hand-
shake routines during connection establishment ensure that the standards
ADSL, ADSL 2 and ADSL 2+ are intercompatible.
Parallel to data transfer, ADSL also provides full and unlimited support for the
classic applications in telephony (telephone, fax, answering machine, PBX).
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 1: Introduction
12
EN
Bridge function for coupling networks via ISDN connection ✔✔✔
Port-Mapping to set up LAN ports as additional WAN ports ✔ ✔
Policy-based routing for policy-based selection of target routes ✔✔✔
Load-balancing for bundling of multiple DSL channels 2 channels 4 channels 4 channels
Backup solutions and load balancing with VRRP ✔✔✔
NAT Traversal (NAT-T) ✔✔✔
DMZ with configurable IDS checks ✔✔✔
PPPoE-Server ✔✔✔
WAN-RIP ✔✔✔
Spanning Tree Protocol ✔✔✔
Layer-2-QoS-Tagging ✔✔✔
ISDN leased lines ✔✔✔
LANCAPI server for the operating with office applications as fax or
answering machine via ISDN interface
✔✔✔
WAN connection
Connection for DSL or cable modem ✔✔✔
Integrated ADSL modem (ADSL2+ ready) ✔ ✔
ISDN S0 bus in multi device-mode or in point-to-point mode with auto-
matic D-channel protocol identification. Supports static and dynamic
channel bundling per MLPPP and BACP as well as Stac data compression
(Hi/fn)
✔✔✔
Port for external modem, analogue or GSM (requires LANCOM modem
adapter kit; from LCOS 5.0)
✔✔✔
LAN connection
4 individual Fast Ethernet LAN ports, switchable separately, e.g. as LAN
switch or separate DMZ ports, auto crossover.
✔✔✔
USB connector
USB 2.0 host port (full speed: 12 Mbps) for connecting a USB printer and
for future extensions
✔ ✔
Security functions
IPSec encryption in external software (VPN client) ✔ ✔
5 integrated VPN tunnels for protection of network connections ✔ ✔
IPSec encryption in hardware (optional; activated with the VPN-25
option)
✔ ✔
LANCOM
821+
LANCOM
1711+ VPN
LANCOM
1721 VPN
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 1: Introduction
13
EN
IP masquerading (NAT, PAT) to conceal individual LAN workstations
behind a single public IP address.
✔✔✔
Stateful Inspection Firewall ✔✔✔
Firewall filter for blocking individual IP addresses, protocols and ports ✔✔✔
MAC address filter regulates, for example, LAN-workstation access to the
IP routing function
✔✔✔
Protection of the configuration from brute-force attacks. ✔✔✔
Configuration
Configuration with LANconfig or with web browser, additionally terminal
mode for Telnet or other terminal programs, SNMP interface and TFTP
server function.
✔✔✔
Remote configuration via ISDN (with ISDN-PPP connections e.g. via Win-
dows network and dial-up connections)
✔✔✔
Serial configuration interface ✔✔✔
Callback function with PPP authentication mechanisms for restriction to
fixed ISDN telephone numbers
✔✔✔
FirmSafe with firmware versions for absolutely secure software upgrades ✔✔✔
Optional software extensions
LANCOM VPN Option with 25 active tunnels for protection of network
couplings
✔ ✔
Optional hardware extensions
LANCOM Modem Adapter Kit for connection of analog or GSM modems
to the serial interface
✔✔✔
LANCOM
821+
LANCOM
1711+ VPN
LANCOM
1721 VPN
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 2: Installation
14
EN
2 Installation
This chapter will assist you to quickly install hardware and software. First,
check the package contents and system requirements. The device can be
installed and configured quickly and easily if all prerequisites are fulfilled.
2.1 Package contents
Please check the package contents for completeness before starting the
installation. In addition to the device itself, the package should contain the
following accessories:
If anything is missing, please contact your retailer or the address stated on the
delivery slip of the unit.
2.2 System requirements
Computers that connect to a LANCOM must meet the following minimum
requirements:
LANCOM 821+
LANCOM 1721 VPN
LANCOM 1711+ VPN
Power adapter ✔✔✔
LAN connector cable (green plugs) ✔✔✔
WAN connector cable (dark blue plugs) ✔
ADSL connector cable (transparent plugs) ✔ ✔
ISDN connector cable (light blue plugs) ✔✔✔
Connector cable for the configuration interface ✔✔✔
LANCOM CD ✔✔✔
Printed documentation ✔✔✔
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 2: Installation
15
EN
Operating system that supports TCP/IP, e.g. Windows Vista™,
Windows XP, Windows Millennium Edition (Me), Windows 2000, Win-
dows 98, Linux, BSD Unix, Apple Mac OS, OS/2.
Access to the LAN via the TCP/IP protocol.
The LANtools also require a Windows operating system. A web
browser under any operating system provides access to WEBconfig.
2.3 Status displays, interfaces and hardware installation
2.3.1 Status displays
Meanings of the LEDs
In the following sections we will use different terms to describe the behaviour
of the LEDs:
Blinking means, that the LED is switched on or off at regular intervals in
the respective indicated colour.
Flashing means, that the LED lights up very briefly in the respective col-
our and stay then clearly longer (approximately 10x longer) switched off.
Inverse flashing means the opposite. The LED lights permanently in the
respective colour and is only briefly interrupted.
Flickering means, that the LED is switched on and off in irregular inter-
vals.
Front side
The various LANCOM Router models have different numbers of indicators on
the front panel depending on their functionality.
LANCOM 821+ and
LANCOM 1721 VPN
LANCOM
LANCOM
LANCOM
LANCOM
LANCOM
1721
1721
1721
1721
1721
VPN
VPN
VPN
VPN
VPN
Power
Power
Power
Power
Power
ADSL Status
ADSL Status
ADSL Status
ADSL Status
ADSL Status
Online
Online
Online
Online
Online
ADSL Data
ADSL Data
ADSL Data
ADSL Data
ADSL Data
ETH 3
ETH 3
ETH 3
ETH 3
ETH 3
ETH 4
ETH 4
ETH 4
ETH 4
ETH 4
ISDN Status
ISDN Status
ISDN Status
ISDN Status
ISDN Status
ISDN Data
ISDN Data
ISDN Data
ISDN Data
ISDN Data
ETH 1
ETH 1
ETH 1
ETH 1
ETH 1
ETH 2
ETH 2
ETH 2
ETH 2
ETH 2
VPN
VPN
VPN
VPN
VPN
not available on LANCOM 821+
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 2: Installation
16
EN
LANCOM 1711+ VPN
Top
The two top-mounted LEDs enable the main function status to be assessed
even if the device is positioned vertically.
Power This LED indicates that the device is operational. After the device has been
switched on, it will flash green for the duration of the self-test. After the self-
test, either an error is output by a flashing red light code or the device starts
and the LED remains lit green.
The power LED flashes red/green in alternation until a configuration
password has been specified. Without a configuration password, the
configuration data of the LANCOM is insecure. Under normal circum-
stances, you would assign a configuration password during the basic
configuration (see instructions in the following chapter). For informa-
1711+ VPN
Power
WAN Status
Online
WAN Data
ETH 3
ETH 4
ISDN Status
ISDN Data
ETH 1
ETH 2
VPN
Power
WLAN-Link
off Device off
green blinking Self-test when powering up
green constantly on Device ready for use
red/
green
blinking alternately Device insecure: configuration password not assigned
red blinking Time or connect-charge reached
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 2: Installation
17
EN
tion about a later assignment of the configuration password see the
section “Security settings”.
Online The online LED displays the general status of all WAN interfaces:
ADSL status
( LANCOM
821+ and
LANCOM
1721 VPN
only)
Information on connection status at the ADSL connector:
Flashing Power LED but no connection?
There's no need to worry if the Power LED blinks red and you can no
longer connect to the WAN. This simply indicates that a preset time or
connect-charge limit has been reached. There are three methods
available for unlocking:
Reset connect charge protection.
Increase the limit that has been reached.
Completely deactivate the lock that has been triggered (set limit
to '0').
If a time or connect charge limit has been reached, you will be notified in LANmonitor. To
reset the connect charge protection, select Reset Charge and Time Limits in the context
menu (right mouse click). You can configure the connect charge settings in LANconfig under
Management Costs (you will only be able to access this configuration if 'Complete con-
figuration display' is selected under View Options…).
You will find the connect charge protection reset in WEBconfig and all parameters under
Expert Configuration Setup Charges- module.
Signal for reached time
or connect-charge
limit
P
ower
Power
Off No active connection
Green Flashing Opening the first connection
Green Inverse flashing Opening an additional connection
Green On (perma-
nently)
At least one connection is established
Red On (perma-
nently)
Error establishing the last connection
Off Interface deactivated
Green Blinking/flashing Handshake/training
Green Permanently Synchronization successful
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 2: Installation
18
EN
ADSL data
( LANCOM
821+ and
LANCOM
1721 VPN
only)
Information on data traffic at the ADSL connector:
WAN Status
(only LANCOM
1711+ VPN)
Connection status of the WAN connection:
WAN Data
(only LANCOM
1711+ VPN)
Data traffic via the WAN connection:
ISDN status Information on connection status at the ISDN S0 connector:
Red Flickering Error (CRC error, framing error, etc.)
Red On (permanently) No synchronization, searching for remote station
Red/
orange
Blinking Hardware error
Off No logical connection
Green Blinking Opening the first connection
Green Inverse flashing Opening an additional connection
Green Permanently At least one logical connection is established
Green Inverse flickering Data traffic (send or receive)
off not connected
green blinking Establishing first connection
green invers flashing Establishing further connection
green constantly on At least one connection established
red constantly on Error while establishing connection
off No network device connected
green constantly on Connection to network device operational, no data traffic
green flickering Data traffic (send or receive)
Off Not connected or no S0 voltage (no error message)
Green Blinking D-channel initialization (establishing contact to provider)
Green On (perma-
nently)
D-channel operational
Red Flickering D-channel error
Red On (perma-
nently)
D-channel activation failed
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 2: Installation
19
EN
If the ISDN status LED goes off automatically, this does not indicate
an error at the S0 bus. It is in fact because several ISDN connections
and PBXs switch the S0 bus into power-saving mode after a certain
period of inactivity. When needed, the S0 bus automatically reacti-
vates and the ISDN status LED illuminates in green.
ISDN Data Status display for both ISDN B channels:
ETH LAN connector status in the integrated switch:
VPN Status of a VPN connection.
2.3.2 Device connectors
The connections and switches of the router are located on the back panel:
off No connection established
green Blinking Dialling
green Flashing Establishing first connection
green Inverse flashing Establishing further connection
green Constantly on Connection established via B channel
green Flickering Data traffic (send or receive)
Off No networking device attached
Green On (perma-
nently)
Connection to network device operational, not data traffic
Green Flickering Data traffic
Red Flickering Data packet collision
Off No VPN tunnel established
Green Blinking Connection establishment
Green Flashing First connection
Green Inverse flashing Other connections
Green On (perma-
nently)
VPN tunnels are established
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 2: Installation
20
EN
LANCOM 821+ and
LANCOM 1721 VPN
Voltage switch
Connection for the included power adapter
Switch with four 10/100Base-Tx connections
USB connection
Serial configuration port
ISDN/S0 port
ADSL port
Reset switch
LANCOM 1711+
VPN
Voltage switch
Connection for the included power adapter
Switch with four 10/100Base-Tx connections
WAN port
USB connection
ISDN/S0 port
Serial configuration port
Reset
DC12V
ETH3ETH4 ETH2 ETH1
ISDN S0
ADSL
ConfigUSB (COM)
not available on LANCOM 821+
WAN USB ISDN-S0
Reset
DC 12 V
Config (COM)ETH 1ETH 2
ETH 3
ETH 4
I
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 2: Installation
21
EN
Reset switch
The reset switch has two different functions depending on the length of time
that it is pressed:
Restarting the device (soft reset) – push the button for less than five
seconds. The device will restart.
Resetting the configuration (hard reset) – push the button for more
than five seconds. All the device's LEDs will light up green and stay
on. As soon as the reset switch is released, the device will restart with
factory default settings.
Reset button functions
The reset button offers two basic functions—boot (restart) and reset (to the
factory settings)—which are called by pressing the button for different
lengths of time.
Some devices simply cannot be installed under lock and key. There is conse-
quently a risk that the configuration will be deleted by mistake of a co-worker
presses the reset button too long. With the suitable setting, the behavior of
the reset button can be controlled.
Reset button
This option controls the behavior of the reset button when it is pressed:
Ignore: The button is ignored.
Please observe the following notice: The settings 'Ignore' or 'Boot
only' makes it impossible to reset the configuration to the factory set-
tings. If the password is lost for a device with this setting, there is no
way to access the configuration! In this case the serial communica-
tions interface can be used to upload a new firmware version to the
device—this resets the device to its factory settings, which results in
the deletion of the former configuration. Instructions on firmware
uploads via the serial configuration interface are available in the LCOS
reference manual.
Configuration tool Call
WEBconfig, Telnet Expert configuration > Setup > Config
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 2: Installation
22
EN
Boot only: With a suitable setting, the behavior of the reset button can
be controlled; the button is then ignored or a press of the button
prompts a re-start only, however long it is held down.
Reset-or-boot (standard setting): Press the button briefly to re-start
the device. Pressing the button for 5 seconds or longer restarts the
device and resets the configuration to its factory settings. All LEDs on
the device light up continuously. Once the switch is released the
device will restart with the restored factory settings.
After resetting, the device starts completely unconfigured and all set-
tings are lost. If possible be sure to backup the current device config-
uration before resetting.
2.4 Hardware installation
The installation of the LANCOM Router base station takes place in the follow-
ing steps:
LAN – connect the LANCOM Router to your LAN or to an individual PC.
For that purpose, plug the included network cable (green plugs) into the
LAN connector of the device and the other end into a free network
connecting socket of your local network, into a free socket of a hub/switch
or into the network socket of an individual PC.
The LAN connector identifies automatically the transfer rate (10/100
Mbps) of the connected network device (autosensing). A parallel connec-
tion of devices with different speeds and types is possible.
You should never have more than one unconfigured LANCOM Router
in a network segment at any given time. All unconfigured LANCOM
Router devices use the same IP address (with the final digits '254'),
which would result in an address conflict. To avoid problems, always
configure multiple LANCOM Router devices one at a time, immedi-
ately assigning each device a unique IP address (one that does not
end with '254').
821+/1721 only ADSL – connect the ADSL interface to the splitter using the supplied
ADSL connector cable (transparent plugs).
1711+ only DSL – connect the WAN interface to the DSL modem socket using the
supplied DSL connector cable (dark blue plugs).
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
25
EN
3 Basic configuration
The basic configuration is conducted with a convenient Setup Wizard that
provides step-by-step guidance through the configuration and that requests
any necessary information.
First of all this chapter presents the information that has to be entered for the
basic configuration. This first section will help you to gather up all of the nec-
essary data before you start the Wizard.
You subsequently enter this information into the Setup Wizard. Starting the
program and the following procedure are described step by step. LANconfig
and WEBconfig each have their own description. With all of the necessary
information collected in advance, this basic configuration can now take place
quickly and in ease.
At the end of this chapter we show you the necessary settings for the work-
place computers in the LAN so that they can access the device without prob-
lem.
3.1 What details are necessary?
The Basic Settings Wizard is used to set the LANCOM VPN Routers basic TCP/
IP parameters and to protect the device with a configuration password. The
following description of the information required by the wizard is divided into
the following configuration sections:
TCP/IP settings
Protecting the configuration
Configuring toll protection
Security settings
3.1.1 TCP/IP settings
TCP/IP configuration can be performed in two different ways: Either fully auto-
matically or manually. No user input is required if TCP/IP configuration is per-
formed automatically. All parameters are set by the Setup Wizard on its own.
When manual TCP/IP configuration is prompts for theperformed the wizard
usual TCP/IP parameters: IP address, network mask etc. (more on this later)
The fully automatic TCP/IP configuration is only possible in certain network
environments. For this reason the Setup Wwizard analyses the connected LAN
to see whether fully automatic configuration is possible or not.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
26
EN
New LAN – fully automatic configuration possible
The setup wizard offers to configure TCP/IP fully automatically if no network
devices connected have yet been configured. This usually happens in the fol-
lowing situations:
Only a single PC is going to be attached to the LANCOM VPN Router
Setting up a new network
Fully automatic TCP/IP configuration will not be offered if you are integrating
the LANCOM VPN Router into an existing TCP/IP LAN. In this case please con-
tinue with the section 'Required information for manual TCP/IP configuration'.
The result of fully automatic TCP/IP configuration is as follows: The LANCOM
VPN Router is assigned the IP address '172.23.56.254' (network mask
'255.255.255.0'). The integrated DHCP server is also activated so that the
LANCOM VPN Router can assign the devices in the LAN IP addresses automat-
ically.
Should you still configure manually?
Fully automatic TCP/IP configuration is optional. Instead of this you can select
manual configuration. Make this selection after considering the following:
Select automatic configuration if you are not familiar with networks and
IP addresses.
Select manual TCP/IP configuration if you are familiar with networks and
IP addresses and one of the following statements is true:
You have not yet used any IP addresses in your network but would like
to now; You would like to specify the IP address for the router yourself
and would like to assign it a user-defined address from one of the
address ranges reserved for private use, for example '10.0.0.1' with
a network mask of '255.255.255.0'. If you do this you simultaneously
specify the address range that the DHCP server will subsequently use
for the other devices in the network (provided the DHCP server is acti-
vated).
You have so far also used IP addresses on the computers in the LAN.
Required information for manual TCP/IP configuration
When performing manual TCP/IP configuration the Setup Wwizard prompts
you for the following information:
DHCP mode of operation
Off: The IP addresses required must be entered manually.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
27
EN
Server: The LANCOM VPN Router operates as DHCP server in the net-
work; as a minimum its own IP address and the network mask must
be assigned.
Client: The LANCOM VPN Router obtains its address information from
another DHCP server; no address information is required.
IP address and network mask for the LANCOM VPN Router
Assign the LANCOM VPN Router a free IP address from your LAN's address
range and enter the network mask.
Gateway address
Enter the gateway's IP address if you have selected 'Off' as the DHCP
mode of operation or if another network device is assuming the role of
gateway in the 'Server' mode of operation.
DNS server
Enter the IP address of a DNS server to resolve domain names if you have
selected 'Off' as the DHCP mode of operation or if another network device
is assuming the role of DNS server in the 'Server' mode of operation.
3.1.2 Configuration protection
Using a password secures access to the LANCOM VPN Router's configuration
and thus prevents unauthorized modification. The device's configuration con-
tains a great deal of sensitive data such as data for Internet access and should
be protected by a password in all cases.
Multiple administrators can be set up in the configuration of the
LANCOM, each with differing access rights. Up to 16 different admin-
istrators can be set up for a LANCOM VPN Router. Further information
can be found in the LCOS reference manual under “Managing rights
for different administrators”.
3.1.3 Settings for the DSL connection
It may be necessary to enter the transmission protocol used for the DSL con-
nection. The wizard will enter the correct setting for the most important DSL
providers on its own. Only when the wizard does not list your provider must
the transmission protocol used by your DSL provider be entered.
The wizard will offer you a universal 'multimode' protocol that works with all
common types of DSL connection.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
28
EN
3.1.4 Settings for the ISDN Connection
If you wish to use the ISDN connection you can make the following settings:
One or more ISDN MSNs on which the router should answer calls. MSNs
are ISDN call numbers that your telephone company allocates to you. They
are usually specified without a prefix. The numbers specified are only
important for router functions (LAN-LAN coupling, RAS), but not for the
remote configuration and LANCOM VPN Option.
A prefix to access the public telephone network. It is normally only
required when connecting via an ISDN PBX. Usually this is a '0'. This prefix
is used for all outgoing calls.
Finally you should know whether the telephone company transmits an
ISDN metering pulse. This can be evaluated by the LANCOM Router for
cost budgets and the accounting function.
3.1.5 Charge protection
Charge protection prevents DSL connections being established above and
beyond a predefined amount and therefore protects you from unexpectedly
high connection charges.
If you operate the LANCOM Router on a DSL link that is charged on a time
basis you can set the maximum connection time in minutes.
The budget can be completely deactivated by entering a value of '0'.
In the basic settings, charge protection is set to a maximum value of
600 minutes in any seven day period. Please adjust this parameter to
match your own requirements, or deactivate charge protection if you
have agreed a tariff for unlimited traffic with your provider.
3.2 Instructions for LANconfig
Start up LANconfig by clicking Start Programs LANCOM
LANconfig. LANconfig automatically detects the new LANCOM devices in
the TCP/IP network.
If an unconfigured device is being found during searching, the setup wiz-
ard starts that will help you make the basic settings of the device or will
even do all the work for you (provided a suitable network environment
exists).
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
29
EN
If you cannot access an unconfigured LANCOM, the problem may be
due to the netmask of the LAN: with less than 254 possible hosts (net-
mask > '255.255.255.0'), please ensure that the IP address
'x.x.x.254' is located in your own subnet.
If you have chosen automatic TCP/IP configuration, please continue with
Step .
If you would like to configure the TCP/IP settings manually, assign an
available address from a suitable address range to the LANCOM. Confirm
your choice with Next.
Specify whether or not the router should act as a DHCP server. Make your
selection and confirm with Next.
In the following window, specify the password for configuration access.
Note that the password is case-sensitive and ensure that it is sufficiently
long (at least 6 characters).
In addition, you may specify whether the device may only be configured
from the local network or whether remote configuration via the WAN (i.e.
a remote network) is also permissible.
Please note that enabling this will also permit remote configuration
via the Internet. You should always make sure that the configuration
access is protected with a password.
In the next window, select your DSL provider from the list that is displayed.
If you select 'My provider is not listed here,' you must enter the transfer
protocol used by your DSL provider manually. Confirm your choice with
Next.
Connect charge protection can limit the cost of DSL connections to a pre-
determined amount if desired. Confirm your choice with Next.
Complete the configuration with Finish.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
30
EN
Section 'TCP/IP settings to workstation PCs' will describe the settings
required for the individual workstations in the LAN.
3.3 Instructions for WEBconfig
Device settings can be configured from any Web browser. WEBconfig config-
uration software is an integral component of the LANCOM. A Web browser is
all that is required to access WEBconfig. WEBconfig offers similar Setup Wiz-
ards to LANconfig and hence provides the perfect conditions for easy config-
uration of the LANCOM – although, unlike LANconfig, it runs under any
operating system with a Web browser.
To carry out a configuration with WEBconfig, you need to know how to con-
tact the device. Device behavior and accessibility for configuration via a Web
browser depend on whether the DHCP server and DNS server are active in the
LAN already, and whether these two server processes share the assignment in
the LAN of IP addresses to symbolic names.
Following power-on, unconfigured LANCOM devices first check whether a
DHCP server is already active in the LAN. Depending on the situation, the
device can either enable its own DHCP server or enable DHCP client mode. In
the second operating mode, the device can retrieve an IP address for itself
from a DHCP server in the LAN.
Network without a DHCP server
In a network without a DHCP server, unconfigured LANCOM devices enable
their own DHCP server service when switched on and assign IP addresses,
information on gateways, etc. to other computers in the LAN (provided they
are set to automatic retrieval of IP addresses – auto DHCP). In this constella-
tion, the device can be accessed by every computer with the auto DHCP func-
tion enabled with a Web browser under IP address 172.23.56.254.
With the factory settings and an activated DHCP server, the device for-
wards all incoming DNS requests to the internal Web server. This
means that a connection can easily be made to set set up an uncon-
figured LANCOM by entering any name into a Web browser.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
31
EN
If the configuration computer does not retrieve its IP address from the
LANCOM DHCP server, it determines the current IP address of the computer
(withStart Run cmd and command ipconfig at the prompt under Win-
dows 2000 or Windows XP, with Start Run cmd and command win-
ipcfg at the prompt under Windows Me or Windows 9x or with command
ifconfig in the console under Linux). In this case, the LANCOM can be
accessed with address x.x.x.254 (the “x”s stand for the first three blocks in
the IP address of the configuration computer).
Network with DHCP server
If a DHCP server for the assignment of IP addresses is active in the LAN, an
unconfigured LANCOM device disables its own DHCP server, switches to DHCP
client mode and retrieves an IP address from the DHCP server in the LAN.
However, this IP address is initially unknown and accessing the device
depends on the name resolution:
If the LAN also has a DNS server for name resolution and this communi-
cates the IP address/name assignment to the DHCP server, the device can
be reached under name "-<MAC address>", e.g. “-00a057xxxxxx”.
http://-00a05700094A
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
32
EN
The MAC address on a sticker on the base of the device.
If there is no DNS server in the LAN, or if it is not coupled to the DHCP
server, the device cannot be reached via the name. In this case the follow-
ing options remain:
Use LANconfig's “Find Device” function, or perform WEBconfig's
“Device Search” from another yet accessible LANCOM.
Use suitable tools to find out the IP address assigned to the LANCOM
by DHCP and access the device directly using this IP address.
Use the serial configuration interface to connect a computer running
a terminal program to the device.
Login
When prompted for user name and password when accessing the device,
enter your personal data in the appropriate fields. Observe the use of upper
and lower case.
If you used the general configuration access, only enter the corresponding
password. The user name field remains blank in this case.
As an alternative, the login dialog provides a link for an encrypted
connection over HTTPS. Always use the HTTPS connection for
increased security whenever possible.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
33
EN
Setup Wizards
The setup Wizards allow quick and easy configuration of the most common
device settings. Select the Wizard and enter the appropriate data on the fol-
lowing screens.
The settings are not stored in the device until inputs are confirmed on
the last screen of the Wizard.
3.4 TCP/IP settings to workstation PCs
The correct addressing of all devices within a LAN is extremely important for
TCP/IP networks. In addition, all computers must know the IP addresses of two
central points in the LAN:
Default gateway – receives all packets that are not addressed to comput-
ers within the local network.
DNS server – translates network names (www.lancom.de) or names of
computers (www.lancom.de) to actual IP addresses.
The LANCOM can perform the functions of both a default gateway and a DNS
server. In addition, as a DHCP server it can also automatically assign valid IP
addresses to all of the computers in the LAN.
The correct TCP/IP configuration of the PCs in the LAN depends on the method
used to assign IP addresses within the LAN:
IP address assignment via the LANCOM (default)
In this operating mode the LANCOM not only assigns IP addresses to the
PCs in the LAN, it also uses DHCP to specify its own IP address as that of
the default gateway and DNS server. The PCs must therefore be config-
ured so that they automatically obtain their own IP address and the IP
addresses of the standard gateway and DNS server (via DHCP).
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 3: Basic configuration
34
EN
IP address assignment via a separate DHCP server
The workstation PCs must be configured so that they automatically obtain
their own IP address and the IP addresses of the standard gateway and
DNS server (via DHCP). The IP address of the LANCOM must be stored o
the DHCP server so that the DHCP server transmits it to the PCs in the LAN
as the standard gateway. In addition, the DHCP server should also specify
the LANCOM as a DNS server.
Manual IP address assignment
If the IP addresses in the network are assigned static ally, then for each PC
the IP address of the LANCOM must be set in the TCP/IP configuration as
the standard gateway and as a DNS server.
For further information and help on the TCP/IP settings of your
LANCOM, please see the reference manual. For more information on
the network configuration of the workstation computers, please refer
to the documentation of your operating system.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 4: Setting up Internet access
35
EN
4 Setting up Internet access
The LANCOM provides a central point of Internet access for all of the comput-
ers in the LAN.
Which WAN interface?
Setting up the Internet access is carried out with the help of a convenient Wiz-
ard. In the first step you select the WAN interface that is to be used for estab-
lishing the Internet connection.
To establish an Internet connection via the DSL interface, an external ADSL
modem first has to be connected to one of the device's ETH ports. When set-
ting up the Internet access, you define which ETH port the ADLS modem has
been connected to.
Does the Setup Wizard know your Internet provider?
The Wizard is preset with access data for the principal Internet providers in
your country and offers you a selection list. If you find your Internet provider
in this list, then you generally do not have to enter any additional parameters
to set up your Internet access. All that is required is the authentication data
as supplied to you by your Internet provider.
Internet provider unknown
If the list in the Setup Wizard does not contain your provider, you will be asked
step- by- step for all of the necessary data. This access data will have been sup-
plied to you by your Internet provider.
Other connection options
In addition you can use the Wizard to activate or deactivate additional options
(if supported by your Internet provider):
INTERNET
HEADQUARTER
SERVER LAN GATEWAYROUTER
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 4: Setting up Internet access
36
EN
Billing by time or flatrate – select the method by which you are billed by
your Internet provider.
In case of billing by time, you can set the LANCOM to cut connections
automatically if no data flows for a certain time (the hold time).
You can also set up line polling that detects inactive remote stations
very quickly and, in such cases, can close the connection before the
hold time expires.
In case of flatrate billing you can also set up line polling to monitor
the function of the remote station.
Apart from that you can opt to keep flatrate connections permanently
active ("keep-alive"). In case a connection should fail, it is re-estab-
lished automatically.
Creating a backup connection to the Internet
The most common utilization of the backup solution is to provide an auxiliary
Internet connection. When setting up an Internet connection, an the addi-
tional option is to create a second connection to the Internet via an alternative
WAN interface. If the primary Internet access is set up to operate via the ADSL
interface, you can set up your backup connection to operate via UMTS or
ISDN.
When configuring the backup connection you can set up an alterna-
tive provider, if available. This allows you not only to overcome prob-
lems with the physical line, but also problems in your provider's own
network as well.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 4: Setting up Internet access
37
EN
4.1 The Internet Connection Wizard
4.1.1 Instructions for LANconfig
Mark your device in the selection window. From the command line, select
Extras Setup Wizard.
In the selection menu, select the Setup Wizard, Set up Internet connec-
tion and confirm the selection with Next.
In the following windows you select your country, your Internet provider
if possible, and you enter your access data.
Depending on availability the Wizard provides further options for your
Internet connection.
After entering all of the necessary data the Wizard then offers you the
option of setting up a backup connection. Select the corresponding WAN
interface to be used for the backup connection and enter the relevant
access data for the Internet connection.
The Wizard then sets up the alternative Internet access and at the same
time creates the necessary entries into the backup table and also in the
PPP table for checking the Internet connection.
Please be aware that in the case of backup via UMTS, some of the
services provided over the main Internet connection may not be avail-
able. Some UMTS service providers either prevent the use of VPN tun-
nels or VoIP applications or only allow them after payment of
additional fees. Other providers assign IP addresses from an internal
address range, so preventing applications that rely on public IP
addresses from working. Please ask your UMTS provider for informa-
tion on limitations that may apply.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 5: Linking two networks
40
EN
5 Linking two networks
With the network interconnection (also known as LAN to LAN coupling) of the
LANCOM Router, two local networks are linked.
The LAN to LAN coupling can be realized in principle in two different ways:
VPN: For coupling via VPN, the connection between both LANs is estab-
lished over a specially secured connection through the public Internet. A
router with VPN support is required in both LANs.
ISDN: For coupling via ISDN, a direct connection between both LANs is
established over an ISDN connection. A router with ISDN interface is
required in both LANs.
Always configure both sides
Both routers involved in the network interconnection must be configured.
Care must be taken to ensure that the configuration information provided
matches.
The following instructions will assume that LANCOM Router devices
are being used on both sides. A network interconnection may also be
realized with routers from other manufacturers. A mixed setup usually
requires more extensive configuration measures for both devices,
however. Please refer to the reference manual for more information in
this regard.
A setup wizard handles the configuration of the connection in the usual con-
venient manner.
Security aspects
You must, of course, protect your LAN against unauthorized access. A
LANCOM Router therefore offers a whole range of security mechanisms that
can provide an outstanding level of protection:
VPN: Network couplings via VPN transmit data by IPSec. The data are
encrypted by AES, 3-DES, Blowfish or CAST encryption algorithms.
ISDN: For network couplings via ISDN, the connection password, the
checking of the ISDN number and the callback function ensure the secu-
rity of the connection.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 5: Linking two networks
41
EN
The ISDN call back function cannot be configured using the wizard. It
can only be set up in the expert configuration. For details, please see
the reference manual.
5.1 What information is necessary?
The wizard will prompt you for the necessary information on a step-by-step
basis. If possible, however, you should have it available before launching the
wizard.
To explain the significance of the information requested by the wizard, we will
be using a typical deployment as an example: setting up a link between a
branch office and its headquarters. The routers involved are named
'HEAD_OFFICE' and 'BRANCH'.
Please refer to the following tables for the entries to be made for each of the
routers. Arrows mark the dependencies between the entries.
5.1.1 General information
The following details are required for the installation of LAN to LAN couplings.
The first column indicates, whether the information is required for network
couplings over VPN (standard method using “preshared keys“) and/or ISDN.
Further details to network couplings via VPN using enhanced methods
(e.g. digital certificates) can be found in the LCOS reference manual.
Coupling Entry Gateway 1 Gateway 2
VPN ISDN connection available? yes/no yes/no
VPN Type of the local IP address static/dynamic static/dynamic
VPN Type of the remote IP address static/dynamic static/dynamic
VPN + ISDN Name of the local device 'HEAD' 'BRANCH'
VPN + ISDN Name of the remote station 'BRANCH' 'HEAD'
VPN + ISDN Remote ISDN calling number (0123) 123456 (0789) 654321
VPN + ISDN Remote ISDN caller ID (0789) 654321 (0123) 123456
VPN + ISDN Password for secure transmission of the IP
address
'Password' 'Password'
VPN Shared secret for encryption 'Secret' 'Secret'
VPN IP address of remote station '10.0.2.100' '10.0.1.100'
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 5: Linking two networks
42
EN
In case your device has an ISDN connection, the wizard asks whether the
remote site has ISDN as well.
The type of IP address must be stated for both sides for VPN connections
via the Internet. There are two types of IP addresses: static and dynamic.
An explanation of the two IP address types can be found in the reference
manual.
Thanks to Dynamic VPN, connections can be enabled not only
between gateways with fixed, static IP addresses, but even between gate-
ways with dynamic IP addresses. The active initiation of VPN connec-
tions towards remote sites with dynamic IP addresses requires ISDN.
If you haven't already named your LANCOM Router, the wizard will ask
you for a new, unique device name. With this entry, you will rename
your LANCOM Router. Be sure to give the two devices different names.
The name of the remote station is needed for its identification.
Enter the subscriber number of the remote station in the ISDN subscriber
number field. The complete subscriber number including all necessary
area and country codes is required.
The stated ISDN caller ID is used to identify and authenticate callers.
When a LANCOM Router receives a call, it compares the ISDN caller ID
entered for the remote station with the actual caller ID transferred via the
D channel. An ISDN caller ID generally consists of an area code and an
MSN.
VPN IP network address of the remote network '10.0.2.0' '10.0.1.0'
VPN Netmask of the remote network 255.255.255.0 255.255.255.0
VPN Domain name of the remote network 'head' 'branch'
VPN Hide local stations for access to remote net-
work (Extranet VPN)?
yes/no yes/no
ISDN TCP/IP routing for access to remote
network
yes/no yes/no
ISDN IPX routing for access to remote network yes/no yes/no
VPN + ISDN NetBIOS routing for access to remote net-
work?
yes/no yes/no
VPN + ISDN Name of remote workgroup (NetBIOS only) 'workgroup1' 'workgroup2'
ISDN Data compression on/off on/off
ISDN Channel bundling on/off on/off
Coupling Entry Gateway 1 Gateway 2
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 5: Linking two networks
43
EN
The password for the ISDN connection is an alternative to the use of
the ISDN caller ID. It is always used to authenticate callers that do not
send an ISDN caller ID. The exact same password must be entered on both
sides. It is used for calls in both directions.
The Shared Secret is the central password for security within the VPN.
The exact same password has to be entered on both sides
Data compression increases the transfer speed of the connection at no
additional cost. This is completely unlike the bundling of two ISDN- chan-
nels with MLPPP (Multi Link PPP): The transfer rate will be doubled but
there will also be additional telephone costs for two connections.
5.1.2 Settings for the TCP/IP router
In TCP/IP networks, addressing has a special significance. Please note that
two interconnected networks are logically separate from one another. Each
must therefore have its own network number (in our example, '10.0.1.x' and
'10.0.2.x'). These network numbers may not be identical.
Unlike when accessing the Internet, all of the IP addresses in the involved net-
works are visible on the remote side when coupling networks, not just those
of the router. The computer with the IP address 10.0.2.10 in the branch office
LAN sees the server 10.0.1.2 in the headquarters and can access it (assuming
it has the appropriate rights), and vice versa.
LAN of head office.
IP: 10.0.1.0,
Netmask: 255.255.255.0
Domain: 'head.company'
10.0. .1001
(0123) 123456
LAN of branch office.
IP: 10.0.2.0,
Netmask: 255.255.255.0
Domain: 'branch.company'
10.0.1.2
10.0. .102
10.0. .1002
(0789) 654321
'server.head.company'
'pc1.branch.comany
VPN or ISDN
connection
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 5: Linking two networks
44
EN
DNS access to the remote LAN
Thanks to DNS, it is not only possible to access remote computers in a TCP/IP
network via their IP address, but also by using freely defined names.
For example, the computer with the name 'pc1.branch.company' (IP
10.0.2.10) will not only be able to access the server of the head office via its
IP address, but also via its name, 'server.head.company'. The only precondi-
tion: the domain of the remote network in the wizard must be specified.
The domain can only be specified in the LANconfig wizard. In
WEBconfig, enter the appropriate information later in the expert con-
figuration. For more information, see the LANCOM reference manual.
Extranet VPN
Finally, one can decide whether access to local stations is permitted. In this
'Extranet VPN' operating mode, the IP stations do not expose their IP address
to the remote LAN, rather they will be hidden behind the VPN gateway's IP
address instead.
Therefore, the stations within the remote LAN cannot access IP stations in the
other LAN directly. For example, if a headquarters. LAN in 'Extranet VPN'
mode is hidden behind its gateway's address '10.10.2.100', and on of its IP
stations (e.g. '10.10.2.13') accesses the IP station '10.10.1.2' of the branch
office, then the branch office.s IP stations deems to be a accessed by
'10.10.2.100'. The true IP address of the accessor ('10.10.2.13') is hidden.
If two LANs shall be coupled in Extranet mode, please ensure to enter the
'outbound' Extranet IP address of the remote site, not its Intranet address.
According to the example, this was '10.10.2.100'. The appropriate netmask
for the Extranet IP address would be '255.255.255.255' then.
5.1.3 Settings for the IPX router
The coupling of IPX networks via VPN cannot be configured using the
wizard. It can only be set up in the expert configuration. For details,
please see the reference manual.
Coupling two typical IPX networks to form a WAN requires three IPX network
numbers:
for the LAN of the head office
for the LAN of the branch office
for the higher-level WAN
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 6: Providing dial- in access
49
EN
6 Providing dial-in access
Your LANCOM Router supports dial-in connections to permit individual com-
puters full access to your network. This service is also known as RAS (Remote
Access Service).
In principle, the RAS access can be realized in two different ways:
VPN: For a RAS access via VPN, the connection between the LAN and the
dial-in PC is established over a specially secured connection through the
public Internet. The router in the LAN requires VPN support, the dial-in PC
an access to the Internet and the LANCOM VPN Client.
ISDN: For a RAS access via ISDN, a direct connection between the LAN
and the dial-in PC is established over an ISDN dial-up connection. The
router in the LAN requires an ISDN interface, the dial-up PC an ISDN
adapter or an ISDN modem. The data transfer protocol is PPP. Therefore,
the support of all usual devices and operating systems is ensured.
A setup wizard handles the configuration of the dial-in connection in the
usual convenient manner.
Security aspects
You must, of course, protect your LAN against unauthorized access.
A LANCOM Router therefore offers a whole range of security mechanisms that
can provide an outstanding level of protection:
VPN: Network couplings via VPN transmit data by IPSec. The data are
encrypted by AES, 3-DES, Blowfish or CAST encryption algorithms.
ISDN: For network couplings via ISDN, the connection password, the
checking of the ISDN number and the callback function ensure the secu-
rity of the connection.
The ISDN call back function cannot be configured using the wizard. It
can only be set up in the expert configuration. For details, please see
the reference manual.
6.1 Which information is required?
The wizard will set up dial-up access for only one user. Please run the wizard
again for each additional user.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 6: Providing dial- in access
50
EN
6.1.1 General information
The following entries are required to set up a RAS connection. The first column
indicates whether the information is required for a VPN (standard method
using “preshared keys“) and/or an ISDN connection.
Further details to network couplings via VPN using enhanced methods
(e.g. digital certificates) can be found in the LCOS reference manual.
Notes to the individual values:
User name and password: Users authenticate themselves with this
information when dialling in.
Incoming number: The LANCOM Router uses the optional ISDN caller ID
as an additional user authentication. This security function should not be
used when users dial in from differing locations.
Coupling Entry
VPN + ISDN User name
VPN + ISDN Password
VPN Shared secret for encryption
VPN Hide local stations for access to remote network (Extranet VPN)?
ISDN Incoming number of remote station
ISDN TCP/IP routing for access to remote network
ISDN IPX routing for access to remote network
VPN + ISDN IP addresses for the dial-up PCs: static or dynamic by address range (IP
address pool)
VPN + ISDN NetBIOS routing for access to remote network?
VPN + ISDN Name of remote workgroup (NetBIOS only)
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 6: Providing dial- in access
51
EN
Please refer to chapter “Linking two networks” on page 39 for advice
about the other values required for the installation of a RAS access.
6.1.2 Settings for TCP/IP
Each active RAS user must be assigned an IP address when using the TCP/IP
protocol.
This IP address can be permanently assigned when setting up a user. However,
it is simpler to let the LANCOM Router automatically assign free IP addresses
to users when they dial in. In this case you only need to specify the IP address
range that the LANCOM Router should use for RAS users.
During both manual and automatic IP address assignment, please ensure that
only free addresses from the address range of your local network are used. In
our example, the IP address '10.0.1.101' will be assigned to the PC when con-
necting.
This IP address makes the computer a fully-fledged member of the LAN: with
the appropriate rights, it can access all of the other devices in the LAN. The
The ISDN calling line identity (CLI)
The ISDN caller ID—also known as CLI (C L Ialling ine dentity)—this is the telephone number of
the caller which is transmitted to the participant receiving the call. As a rule, it consists of the
country and area codes and an MSN.
The CLI is well-suited for authentication purposes for two reasons: it is very difficult to manip-
ulate, and the number is transferred free of charge via the ISDN control channel (D-channel).
10.0. .1001
(0123) 123456
User: 'SAMPLE'
(0123) 777888
ISDN adapter
Remote
workstation
IP:
10.0.1.101
LAN of the head office.
IP: 10.0.1.0
VPN or ISDN
connection
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 6: Providing dial- in access
55
EN
Print out profile
Sending a profile via e-mail could be a security risk should the e-mail
be intercepted en route!
To send the profile via e-mail, the device configuration must be set up
with an SMTP account with the necessary access data. Further, the
configuration computer requires an e-mail program that is set up as
the standard e-mail application and that can be used by other appli-
cations to send e-mails.
When setting up the VPN access, certain settings are made to optimize oper-
ations with the LANCOM Advanced VPN Client, including:
Gateway: If defined in the LANCOM VPN Router, a DynDNS name is used
here, or alternatively the IP address
FQDN: Combination of the name of the connection, a sequential number
and the internal domain in the LANCOM VPN Router.
Domain: If defined in the LANCOM VPN Router, the internal domain is
used here, or alternatively a a DynDNS name or IP address
VPN IP networks: All IP networks defined in the device as type 'Intranet'.
Preshared key: Randomly generated key 16 ASCII characters long.
Connection medium: The LAN is used to establish connections.
VoIP prioritization: VoIP prioritization is activated as standard.
Exchange mode: The exchange mode to be used is 'Aggressive Mode'.
IKE config mode: The IKE config mode is activated, the IP address infor-
mation for the LANCOM Advanced VPN Client is automatically assigned
by the LANCOM VPN Router.
6.5 Instructions for WEBconfig
RAS access via VPN cannot be configured using the wizard under
WEBconfig yet. It can only be set up in the expert configuration. For
details, please refer to the reference manual.
From the main menu, launch the 'Connect two local networks' wizard.
Follow the wizard's instructions and enter the required information.
Configure Dial-Up Networking access on the dial-in PC as described.
Next, test the connection (see box ’Ping – quick testing for TCP/IP connec-
tions’).
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 7: Sending faxes with LANCAPI
56
EN
7 Sending faxes with LANCAPI
LANCAPI from LANCOM Systems is a special version of the popular CAPI inter-
face. CAPI (Common ISDN Application Programming Interface) establishes the
connection between ISDN adapters and communications programs. For their
part, these programs provide the computers with office communications func-
tions such as a fax machine or answering machine.
The main advantages of using LANCAPI are economic. LANCAPI provides all
Windows workstations integrated in the LAN (local-area network) with unlim-
ited access to office communications functions such as fax machines, answer-
ing machines, online banking and eurofile transfer. All functions are supplied
via the network without the necessity of additional hardware at each individ-
ual workstation, thus eliminating the costs of equipping the workstations with
ISDN adapters or modems. All you need do is install the office communica-
tions software on the individual workstations.
With LANCAPI by LANCOM it is possible to send faxes comfortably from your
workstation PC, without having connected a fax device. To do so, you need to
install several components:
the LANCAPI client. It provides the connection between your worksta-
tion PC and the LANCAPI server.
the CAPI Faxmodem. This tool simulates a fax device on your worksta-
tion PC.
the MS Windows fax service. This is the interface between the fax appli-
cations and the virtual fax.
The installation of the LANCAPI client is described in the reference manual.
This chapter shows the installation of LANCOM CAPI Faxmodem and MS Win-
dows fax service.
fax
ISDN ISDN adapter
PCs with fax software
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 7: Sending faxes with LANCAPI
57
EN
7.1 Installation of the LANCOM CAPI Faxmodem
Select the entry Install LANCOM software in the setup program of your
LANCOM CD.
Highlight the option CAPI Faxmodem, click Next and follow the instruc-
tions of the installation routine.
When the installation was successful, the LANCOM CAPI Faxmodem is
entered into the Phone and Modem Options of the control panel.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 7: Sending faxes with LANCAPI
58
EN
7.2 Installation of the MS Windows fax service
Select the option Printers and Faxes from the control panel.
Select the option Set up faxing from the window ’Printers and Fax’. Fol-
low, if necessary, the instructions of the installation tool. Into the recent
window, an icon will appear for the newly installed fax printer.
For checking the installation, click with the right mouse button on the fax-icon
and select Properties. The LANCOM CAPI Faxmodem should now be entered
into register 'devices'.
7.3 Sending a fax
After installing all required components, you have several possibilities to send
a fax from your workstation PC. If you have already an existing data file, you
can send it directly from your respective application. If you only want to send
a short message, select the MS Windows fax service. You can use of course
any other fax software alternatively.
7.3.1 Send a fax with any given office application
Open as usual a document in your office application and select the menu
item File/Print.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 7: Sending faxes with LANCAPI
59
EN
Adjust the fax device as printer.
Click on OK. A wizard appears, that will guide you through the remaining
sending process.
7.3.2 Send a fax with the MS Windows fax service
Open the window ’Printers and Faxes’ from the control panel.
Double click with the left mouse button the icon of the fax device.
The fax client console will open. Select the menu item Send a Fax. A wiz-
ard will assist you through the remaining sending process.
LANCOM 821+ – LANCOM 1711+ VPN – LANCOM 1721 VPN
Chapter 8: Security settings
60
EN
8 Security settings
Your LANCOM device has numerous security functions. You find in this chapter
all information needed for an optimal protection of the base station.
You can carry out the configuration of security settings very quickly
and conveniently with the Security Wizards in LANconfig and
WEBconfig.
8.1 The security settings wizard
Access to the configuration of a device permits not only to read out critical
information (e.g. Internet password). Rather, also the entire settings of the
security functions (e.g. firewall) can be altered then. So an unauthorized con-
figuration access endangers not only a single device, but the entire network.
Your LANCOM has a password protection for the configuration access. This
protection is already activated during the basic configuration by entering a
password.
The device locks access to its configuration for a specified period of time after
a certain number of failed log-in attempts. Both the number of failed attempts
and the duration of the lock can be set as needed. By default, access is locked
for a period of five minutes after the fifth failed log-in attempt.
Besides these general settings you can also check the security settings of the
wireless network with the security wizard as far as your device has a WLAN
interface.
8.1.1 Wizard for LANconfig
Mark your LANCOM in the selection window. Select from the command
bar Extras .Setup Wizard
Produkt Specifikationer
| Mærke: | Lancom |
| Kategori: | Router |
| Model: | 1721 VPN |
Har du brug for hjælp?
Hvis du har brug for hjælp til Lancom 1721 VPN stil et spørgsmål nedenfor, og andre brugere vil svare dig
Router Lancom Manualer
3 Januar 2025
3 Januar 2025
3 Januar 2025
5 December 2024
5 December 2024
5 December 2024
3 September 2024
1 September 2024
31 August 2024
31 August 2024
Router Manualer
- Router Strong
- Router OneAccess
- Router Patton
- Router Cotech
- Router Ruckus Wireless
- Router Motorola
- Router RGBlink
- Router König
- Router Hamlet
- Router United Telecom
- Router APC
- Router Silverline
- Router Zurn
- Router Sixnet
- Router Iogear
Nyeste Router Manualer
8 April 2025
22 Marts 2025
9 Marts 2025
6 Marts 2025
23 Februar 2025
23 Februar 2025
22 Februar 2025
20 Februar 2025
20 Februar 2025
12 Februar 2025