Lancom 821 Bedienungsanleitung

LANCOM 821 ADSL/ISDN –

LANCOM 1621 ADSL/ISDN –

LANCOM 1711 VPN

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.

Trademarks

Windows®, Windows XP®and Microsoft®are registered trademarks of Microsoft, Corp.

The LANCOM Systems logo 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.

Subject to change without notice. No liability for technical errors or omissions.

This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit http://www.openssl.org/.

LANCOM Systems GmbH

Adenauerstr. 20/B2

52146 Wuerselen

Germany

www.lancom.de

Wuerselen, January 2005

032

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Preface

Preface

Thank you for placing your trust in this LANCOM product.

With the LANCOM you have chosen a powerful router that possesses inte-

grated DSL respectively ADSL and ISDN interfaces by default as well as an

integrated 4-port switch. With this router you can simply and comfortably

connect individual PCs or whole local networks to the high-speed Internet.

Security settings

For a carefree use of your device, we recommend to carry out all security set-

tings (e.g. Firewall, encryption, access protection, charge lock), which are not

already activated at the time of purchase of your device. The LANconfig wizard

’Check Security Settings’ will support you accomplishing this. Further informa-

tion regarding this topic can be found in chapter “Security settings” on

page 66.

We ask you additionally to inform you about technical developments and

actual hints to your product on our Web page www.lancom.de, and to down-

load new software versions if necessary.

User manual and reference manual

The documentation of your device consists of two parts: the user manual and

the reference manual.

You are now reading the user manual. It contains all information you need to

start your LANCOM. It also contains the most important technical specifica-

tion for the device.

The reference manual can be found on the CD as an Acrobat (PDF) document.

It is designed as a supplement to the user manual and goes into detail on top-

ics that apply to a variety of devices. These include for example:

Systems design of the LCOS operating system

Configuration

Management

Diagnosis

Security

Routing and WAN functions

Firewall

Quality of Service (QoS)

Virtual Private Networks (VPN)

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Preface

Virtual Local Networks (VLAN)

Wireless networks (WLAN)

LANCAPI

Further server services (DHCP, DNS, charge management)

Model variants

This user manual applies to the following models of the LANCOM series:

LANCOM 821 ADSL/ISDN

LANCOM 1621 ADSL/ISDN

LANCOM 1711 VPN

Model

restriction

The sections of the documentation that refer only to a range of models are

marked either in the corresponding text itself or with appropriate comments

placed beside the text.

In the other parts of the documentation, all described models have been clas-

sified under the general term LANCOM.

This documentation was compiled …

...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 or enhance-

ments, please do not hesitate to send an email directly to:

[email protected]

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. In addition support from

LANCOM Systems is also available to you. Telephone numbers and

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Preface

contact information for LANCOM Systems support can be found on a

separate insert, or at the LANCOM Systems website.

Notes symbols

Very important instructions. If not followed, damage may result.

Important instruction that should be followed.

Additional instructions which can be helpful, but are not

required.

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Contents

Contents

1 Introduction 9

1.1 How does ADSL work? 9

1.2 Which use does VPN offer? 12

1.3 Firewall 15

1.4 What does a router do? 16

1.4.1 Bridgehead to the WAN 17

1.4.2 Areas of deployment for routers 17

1.5 What can your LANCOM do? 18

2 Installation 21

2.1 Package contents 21

2.2 System preconditions 21

2.3 Introducing LANCOM 22

2.3.1 Status displays 22

2.3.2 The back of the unit 27

2.4 Hardware installation 28

2.5 Software installation 30

2.5.1 Starting LANCOM setup 30

2.5.2 Which software should you install? 31

3 Basic configuration 32

3.1 Which information is necessary? 32

3.1.1 TCP/IP settings 32

3.1.2 Configuration protection 34

3.1.3 Settings for the DSL connection 34

3.1.4 Settings for the ISDN connection 34

3.1.5 Connect charge protection 35

3.2 Instructions for LANconfig 35

3.3 Instructions for WEBconfig 37

3.4 TCP/IP settings to workstation PCs 41

4 Setting up Internet access 43

4.1 Instructions for LANconfig 45

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Contents

4.2 Instructions for WEBconfig 45

5 Linking two networks 46

5.1 What information is necessary? 47

5.1.1 General information 47

5.1.2 Settings for the TCP/IP router 49

5.1.3 Settings for the IPX router 50

5.1.4 Settings for NetBIOS routing 51

5.2 Instructions for LANconfig 52

5.3 Instructions for WEBconfig 52

6 Providing dial-up access 54

6.1 Which information is required? 54

6.1.1 General information 55

6.1.2 Settings for TCP/IP 56

6.1.3 Settings for IPX 57

6.1.4 Settings for NetBIOS routing 57

6.2 Settings for the dial-in computer 58

6.2.1 Dial-up via VPN 58

6.2.2 Dial-up via ISDN 58

6.3 Instructions for LANconfig 59

6.4 Instructions for WEBconfig 60

7 Sending faxes with LANCAPI 61

7.1 Installation of the LANCOM CAPI fax modem 62

7.2 Installation of the MS Windows fax service 63

7.3 Sending a fax 64

7.3.1 Send a fax with any given office application 64

7.3.2 Send a fax with the MS Windows fax service 64

8 Security settings 66

8.1 The security settings wizard 66

8.1.1 Wizard for LANconfig 66

8.1.2 Wizard for WEBconfig 67

8.2 The firewall wizard 67

8.2.1 Wizard for LANconfig 67

8.2.2 Configuration under WEBconfig 68

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Contents

8.3 The security checklist 68

9 Troubleshooting 71

9.1 No WAN connection is established 71

9.2 DSL data transfer is slow 71

9.3 Unwanted connections under Windows XP 72

9.4 Cable testing 72

10 Appendix 74

10.1 Performance data and specifications 74

10.2 Contact assignment 76

10.2.1 ADSL interface 76

10.2.2 Ethernet WAN interface (LANCOM 1711 VPN) 77

10.2.3 ISDN-S0 interface 77

10.2.4 Ethernet interfaces 10/100Base-T 78

10.2.5 Configuration interface (Outband) 78

10.3 CE declaration of conformity 78

11 Index 79

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Chapter 1: Introduction

1Introduction

The models LANCOM 821 ADSL/ISDN, LANCOM 1621 ADSL/ISDN 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 1621 ADSL/ISDN and LANCOM 1711 VPN to

act as powerful Dynamic VPN gateways for external offices or mobile users.

The LANCOM 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.

1.1 How does ADSL work?

For LANCOM 821

ADSL/ISDN and

LANCOM 1621

ADSL/ISDN only

Since the late 1980s, scientists have been working on the idea of using con-

ventional telephone lines for video and multimedia applications.

High speed via standard telephone lines

Their approach was based on the use of telephone lines only for the distance

between the subscriber and the next local exchange. From the switching

center, the data is then transferred via high-speed connections to the desired

destination or target network (i.e. the Internet). This minimization of the tel-

ephone line distance used permits considerably higher transfer rates than

would be possible when relying solely on the telephone network.

All DSL technologies, of which ADSL is the most common, are based on this

concept. Thanks to their high transfer speeds, DSL connections are well-suited

for Internet access.

ADSL connection via

telephone line Internet

Local exchange (central office)

LANCOM

LAN

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Chapter 1: Introduction

Ideal for Internet surfers

The ADSL version of DSL was designed for applications in which the user

receives high volumes of data but only transmits relatively small volumes. A

typical example for this would be access to the world wide web (www). Only

a few commands (mouse clicks) are required to initiate the download of very

large volumes of data such as graphics, texts, audio or video files. The user

typically only sends very small amounts of data across the Internet connec-

tion.

With an ADSL connection, a user can download at up to 8 Mbps (“down-

stream”) and upload at up to 800 Kbps (“upstream”). These maximum rates

can be reduced as required by the ADSL provider. A typical access plan might

specify, for example, 768 Kbps download and 128 Kbps upload speed.

All services via a single cable—thanks to the splitter

With ADSL, all traditional telephony applications (telephone, fax, answering

machine, PBX) can still be used without restrictions. So-called splitters make

this possible. Splitters are devices that separate the telephone line's “voice

frequencies” from the “data frequencies” and ensure that the signals are for-

warded to the appropriate networks. Voice signals are passed on to the exist-

ing telephone network, while data signals are forwarded to their destinations

(i.e. Internet providers) via high-bandwidth network connections.

A splitter is also used at the subscriber end to permit ADSL modems/routers

and conventional telephone equipment to be used at the same time.

In some models (like in the picture above) the ADSL modem is integrated

directly in the router (e.g. LANCOM 821 ADSL/ISDN and LANCOM 1621 ADSL/

Router with integrated

ADSL modem

Internet

Splitter

Telephone

network

Splitter

ADSL provider

Switching node

DSL access

multiplexer

Subscriber

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