Lancom L-54g Wireless Manuel utilisateur

110702/0808

LANCOM Systems GmbH

Adenauerstr. 20/B2

52146 Würselen

Germany

E-Mail: [email protected]

Internet www.lancom.eu

LANCOM L-54g Wireless

LANCOM L-54ag Wireless

LANCOM L-54 dual Wireless

LANCOM L-54g Wireless – LANCOM L-54ag Wireless – LANCOM L-54 dual Wireless

쮿Handbuch

쮿Manual

...connecting your business

110702_LC-L54-L54dual-MANUAL_cov1 1110702_LC-L54-L54dual-MANUAL_cov1 1 27.08.2008 11:12:2827.08.2008 11:12:28

LANCOM L-54g Wireless

LANCOM L-54ag Wireless

LANCOM L-54 dual Wireless

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.eu

Wuerselen, August 2008

110702/0808

LANCOM L-54g Wireless - LANCOM L-54ag Wireless - LANCOM L-54 dual Wireless

Preface

Preface

Thank you for placing your trust in this LANCOM Systems product.

The models LANCOM L-54g Wireless, LANCOM L-54ag Wireless and LANCOM

L-54 dual Wireless offer professional Access Point technology and a maximum

of WLAN performance.

Model variants

This documentation is for users of LANCOM Access Points. The access point is

to choose from different models. These are:

LANCOM L-54g Wireless, complying to the 802.11g standard in the 2,4

GHz band, which is downward-compatible to 802.11b devices. This opens

a vast range of possibilities where to use the LANCOM L-54g Wireless: at

the bureau, in open spaces or to interconnect LANs.

LANCOM L-54ag Wireless operates alternatively either in 802.11g mode

in the 2,4 GHz band, or in 802.11a mode in the 5 GHz band as well.

The LANCOM L-54 dual Wireless operates with two integrated 108-Mbps

wireless modules that comply with the WLAN standards IEEE 802.11a/h

or IEEE 802.11b/g and offers simultaneous operations in the 2.4-GHz and/

or the 5-GHz frequency bands. There is no limit to the range of applica-

tions that the LANCOM L-54 dual Wireless can be used for-be it within

infrastructure networks or as a WLAN bridge for network coupling.

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 Access Point.

Security settings

To maximize the security available from your product, we recommend that you

undertake all of the security settings (e.g. firewall, encryption, access protec-

tion) that were not already activated when you purchased the product. The

LANconfig Wizard 'Security Settings' will help you with this task. Further infor-

mation is also available in the chapter 'Security settings'.

We would additionally like to ask you to refer to our Internet site

www.lancom.eu for the latest information about your product and technical

developments, and also to download our latest software versions.

LANCOM L-54g Wireless - LANCOM L-54ag Wireless - LANCOM L-54 dual Wireless

Preface

User manual and reference manual

The documentation of your device consists of the following parts:

Installation guide

User manual

Reference manual

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 Local Networks (VLAN)

Wireless networks (WLAN)

Backup solutions

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:

[email protected]

Our online services www.lancom.eu 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).

LANCOM L-54g Wireless - LANCOM L-54ag Wireless - LANCOM L-54 dual Wireless

Preface

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

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 L-54g Wireless - LANCOM L-54ag Wireless - LANCOM L-54 dual Wireless

Contents

Contents

1 Introduction 9

1.1 What is a wireless LAN? 9

1.1.1 Modes of operation of wireless LANs and access points 9

1.2 What can your LANCOM do? 10

2 Installation 13

2.1 Package contents 13

2.2 System requirements 13

2.2.1 Configuring the LANCOM devices 13

2.2.2 Operating access points in managed mode 14

2.2.3 Status displays, interfaces and hardware installation 14

2.2.4 Status displays 14

2.2.5 The connectors 18

2.2.6 Connecting the LANCOM Access Point 21

2.3 Software installation 23

2.3.1 Starting Software Setup 23

2.3.2 Which software should I install? 24

3 Basic configuration 25

3.1 What details are necessary? 25

3.1.1 TCP/IP settings 26

3.1.2 Configuration protection 27

3.1.3 Settings for the wireless LAN 28

3.2 Instructions for LANconfig 29

3.3 Instructions for WEBconfig 30

3.4 TCP/IP settings to workstation PCs 35

LANCOM L-54g Wireless - LANCOM L-54ag Wireless - LANCOM L-54 dual Wireless

Contents

4 Security settings 36

4.1 Security for the Wireless LAN 36

4.1.1 Closed network 36

4.1.2 Access control via MAC address 37

4.1.3 LANCOM Enhanced Passphrase Security 37

4.1.4 Encryption of the data transfer 38

4.1.5 802.1x / EAP 38

4.1.6 IPSec over WLAN 39

4.2 Tips for handling keys 39

4.3 The security settings wizard 39

4.3.1 Wizard for LANconfig 40

4.3.2 Wizard for WEBconfig 41

4.4 The security checklist 41

5 Advanced wireless LAN configuration 45

5.1 WLAN configuration with the wizards in LANconfig 45

5.2 Point-to-point connections 47

5.2.1 Geometric dimensioning of outdoor wireless network

links 48

5.2.2 Antenna alignment for P2P operations 53

5.2.3 Configuration of P2P connections 55

5.2.4 Access points in relay mode 57

5.2.5 Security for point-to-point connections 58

5.3 Client mode 60

5.3.1 Client settings 61

5.3.2 Set the SSID of the available networks 62

5.3.3 Encryption settings 63

6 Setting up Internet access 65

6.1 The Internet Connection Wizard 66

6.1.1 Instructions for LANconfig 66

6.1.2 Instructions for WEBconfig 67

6.2 The Firewall Wizard 67

6.2.1 LANconfig Wizard 67

6.2.2 Configuration under WEBconfig 68

LANCOM L-54g Wireless - LANCOM L-54ag Wireless - LANCOM L-54 dual Wireless

Contents

7 Options and accessories 69

7.1 Optional LANCOM WLAN antennas 69

7.1.1 Antenna Diversity 70

7.1.2 Installation of AirLancer Extender antennas 70

7.2 LANCOM Public Spot Option 71

8 Troubleshooting 73

8.1 No DSL connection is established 73

8.2 DSL data transfer is slow 73

8.3 Unwanted connections under Windows XP 74

9 Appendix 75

9.1 Performance data and specifications 75

9.2 Contact assignment 76

9.2.1 Ethernet interface 10/100Base-TX, DSL interface 76

9.2.2 Configuration interface (Outband) 76

9.3 Declaration of conformity 77

10 Index 78

LANCOM L-54g Wireless - LANCOM L-54ag Wireless - LANCOM L-54 dual Wireless

Chapter 1: Introduction

1Introduction

1.1 What is a wireless LAN?

The following sections describe the functionality of wireless networks

in general. You can see from the table 'What your LANCOM can do'

further below which functions your device supports. Please refer to

the reference manual for further information on this topic.

A wireless LAN connects individual end-user devices (PCs and mobile comput-

ers) to form a local network (also called – Local Area Network). In contrast to

a traditional LAN, communication takes place over a wireless connection and

not over network cables. For this reason it is called a Wireless Local Area Net-

work (WLAN).

A wireless LAN provides the same functionality as a cable-based network:

Access to files, servers, printers etc. as well as the integration of individual

work stations into a corporate mail system or access to the Internet.

There are obvious advantages to wireless LANs: Notebooks and PCs can be

installed where they are needed—problems with missing connections or

structural changes are a thing of the past with wireless networks.

Apart from that, wireless LANs can also be used for connections over longer

distances. Expensive leased lines and the associated construction measures

can be saved.

LANCOM Wireless Routers and LANCOM Access Points can be oper-

ated either as self-sufficient Access Points with their own configura-

tion (WLAN modules in "Access Point mode“) or as components in a

WLAN infrastructure, which is controlled from a central WLAN-

Controller ("managed mode"). Please observe the corresponding

notices to this in this documentation.

1.1.1 Modes of operation of wireless LANs and access points

Wireless LAN technology and access points in wireless LANs are used in the

following modes of operation:

Simple, direct connection between terminal devices with an access point

(ad-hoc mode)

Extensive wireless LANs, possibly connected to a LAN, with one or more

access points (infrastructure network)

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