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Wireless Access Point
BAT54-Rail
Hirschmann BAT54-Rail User Manual
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Wireless LAN – WLAN
124
3.10
WLAN according to 802.11h
BAT54-Rail/F..
Release
7.54
06/08
123
125
Table of Contents
Default Chapter
1
User Manual
1
Table of Contents
3
BAT54-Rail/F
13
1 Preface
15
Security Settings
16
2 System Design
19
Introduction
19
3 Wireless LAN - WLAN
21
What Is a Wireless LAN
21
Standardized Radio Transmission by IEEE
21
Operation Modes of Wireless Lans and Base Stations
25
Development of WLAN Security
33
Some Basic Concepts
33
Wep
35
Wepplus
37
EAP and 802.1X
37
TKIP and WPA
40
AES and 802.11I
42
Summary
44
Protecting the Wireless Network
45
LEPS-BAT Enhanced Passphrase Security
46
Standard WEP Encryption
48
Background WLAN Scanning
49
Configuration of WLAN Parameters
52
WLAN Security
53
Protocol Filter
55
General WLAN Settings
62
WLAN Routing (Isolated Mode)
63
The Physical WLAN Interfaces
64
Radio Settings
66
Client Mode
71
The Logical WLAN Interfaces
78
Network Settings
79
Additional WLAN Functions
82
Extended WLAN Protocol Filters
87
Protocol Filter Parameters
88
Procedure for Filter Test
90
Redirect Function
91
DHCP Address Tracking
92
Client Mode
93
Basic Configuration
94
Client Settings
95
Advanced Configuration
98
The Roaming Table
100
IEEE 802.11I for Point-To-Point Connections in the WLAN
101
Antenna Alignment for P2P Operations
102
Configuration
104
Access Points in Relay Mode
107
Security for Point-To-Point Connections
107
LEPS for P2P Connections
108
Geometric Dimensioning of Outdoor Wireless Network Links
109
Establishing Outdoor Wireless Networks
112
Geometrical Layout of the Transmission Path
112
Antenna Power
114
Emitted Power and Maximum Distance
117
Transmission Power Reduction
117
Bandwidth Limits in the WLAN
117
Operating as an Access Point
117
Operating as a Client
118
WLAN According to 802.11H
119
Standards
119
Radio Channels in the 5 Ghz Band
122
Frequency Ranges for Indoor and Outdoor Use
123
4 Configuration and Management
125
Configuration Tools and Approaches
125
Configuration Software
126
Searching and Configuring Devices
127
Configuration Using Different Tools
128
Lanconfig
128
Webconfig
131
Telnet
133
Tftp
137
Snmp
138
Encrypted Configuration with SSH Access
139
SSH Authentication
140
Working with Configuration Files
142
New Firmware with Hirschmann Firmsafe
143
This Is How Hirschmann Firmsafe Works
143
How to Load New Software
145
How to Reset the Device
148
Managing Administrators Rights
150
Rights for the Administrators
150
Administrators' Access Via TFTP and SNMP
151
Configuration of User Rights
153
Limitation of the Configuration Commands
155
HTTP Tunnel
156
Named Loopback Addresses
159
Loopback Addresses with ICMP Polling
160
Loopback Addresses for Time Servers
161
Loopback Addresses for SYSLOG Clients
162
5 Lantools Network Management
165
Switch UI Language
166
Project Management with Lanconfig
166
User-Specific Settings for Lanconfig
169
Directory Structure
170
Multithreading
171
Better Overview in Lanconfig with more Columns
172
Manual and Automatic Searches for Firmware Updates
173
Password Protection for SNMP Read-Only Access
175
Device-Specific Settings for Communications Protocols
177
Lanconfig Behavior at Windows Startup
179
Scripting
181
Applications
181
Scripting Function
182
Generating Script Files
183
Uploading Configuration Commands and Script Files
186
Multiple Parallel Script Sessions
190
Scripting Commands
190
WLAN Configuration with the Wizards in Lanconfig
194
Group Configuration with Lanconfig
196
Create a Group Configuration
197
Update Device Configurations
199
Update Group Configurations
200
Using Multiple Group Configurations
200
Rollout Wizard
201
General Settings in the Rollout Wizard
201
Variables
202
Actions to be Executed by the Rollout Wizard
203
Actions for Managing the Rollout Wizard
204
Display Functions in Lanmonitor
205
Lanmonitor-Know What's Going on
208
Extended Display Options
209
Enquiry of the CPU and Memory Utilization over SNMP
210
Monitor Internet Connection
210
Tracing with Lanmonitor
212
Visualization of Larger Wlans
214
Start the Wlanmonitor
215
Search for Access Points
215
Add Access Points
216
Organize Access Points
216
Rogue AP and Rogue Client Detection with the Wlanmonitor
217
Rogue Ap Detection
218
Messaging
222
6 Diagnosis
225
Trace Information-For Advanced Users
225
How to Start a Trace
225
Overview of the Keys
225
Overview of the Parameters
226
Combination Commands
227
Trace Filters
227
Examples of Traces
228
Recording Traces
228
SYSLOG Storage in the Device
229
Activate SYSLOG Module
230
Configuring the SYSLOG Client
230
Read-Out SYSLOG Messages
231
The Ping Command
232
Monitoring the Switch
233
Cable Testing
234
7 Security
237
Protection for the Configuration
237
Password Protection
237
Login Barring
239
Restriction of the Access Rights on the Configuration
240
The Security Checklist
244
8 Firewall
249
Threat Analysis
249
The Dangers
249
The Ways of the Perpetrators
250
The Methods
250
The Victims
251
What Is a Firewall
252
Tasks of a Firewall
252
Different Types of Firewalls
253
Stateful Packet Inspection
255
The BAT Firewall
259
How the BAT Firewall Inspects Data Packets
259
Special Protocols
262
General Settings of the Firewall
264
Parameters of Firewall Rules
268
Alerting Functions of the Firewall
274
Strategies for Firewall Settings
279
Hints for Setting the Firewall
281
Configuration of Firewall Rules
285
Firewall Diagnosis
295
Firewall Limitations
301
Intrusion Detection
302
Examples for Break-In Attempts
302
Configuration of the IDS
303
Denial of Service
304
Examples of Denial of Service Attacks
304
Configuration of Dos Blocking
307
Configuration of Ping Blocking and Stealth Mode
309
9 Quality of Service
311
Why Qos
311
Which Data Packets to Prefer
312
Guaranteed Minimum Bandwidths
313
Limited Maximum Bandwidths
315
The Queue Concept
315
Queues in Transmission Direction
315
Queues for Receiving Direction
317
Reducing the Packet Length
318
Qos Parameters for Voice over IP Applications
320
Qos in Sending or Receiving Direction
324
Qos Configuration
325
Evaluating Tos and Diffserv Fields
325
Defining Minimum and Maximum Bandwidths
328
Adjusting Transfer Rates for Interfaces
329
Sending and Receiving Direction
331
Reducing the Packet Length
331
Qos for Wlans (IEEE 802.11E)
333
10 Virtual Lans (Vlans)
335
What Is a Virtual LAN
335
This Is How a VLAN Works
335
Frame Tagging
336
Conversion Within the LAN Interconnection
337
Application Examples
338
Configuration of Vlans
340
The Network Table
341
The Port Table
341
Configuration with Lanconfig
342
Configuration with Webconfig or Telnet
344
Configurable VLAN Protocol ID
345
Configurable VLAN Ids
346
Different VLAN Ids Per WLAN Client
346
Special VLAN ID for Dslol Interfaces
346
VLAN Tags on Layer 2/3 in the Ethernet
347
Configuring VLAN Tagging on Layer
348
VLAN Tags for DSL Interfaces
349
VLAN Q-In-Q Tagging
350
11 Routing and WAN Connections
353
General Information
353
Bridges for Standard Protocols
353
What Happens in the Case of a Request from the LAN
354
IP Routing
355
The IP Routing Table
355
Policy-Based Routing
358
Local Routing
361
Dynamic Routing with IP RIP
362
SYN/ACK Speedup
365
Configuration of Remote Stations
366
Peer List
366
Layer List
368
IP Masquerading
369
Simple Masquerading
370
Inverse Masquerading
372
Free Translation of TCP/IP Ports on Masked Connections
375
De-Militarized Zone (DMZ)
376
Unmasked Internet Access for Server in the DMZ
377
Demilitarized Zone (DMZ)
379
Assigning Interfaces to the DMZ
379
Assigning Network Zones to the DMZ
380
Address Check with DMZ and Intranet Interfaces
381
Advanced Routing and Forwarding
382
Introduction
382
Defining Networks and Assigning Interfaces
386
Changes in Other Services
391
DHCP Server
391
DHCP Relay Server
398
Netbios Proxy
399
Rip
400
Automatic Generation of VPN Rules
406
Firewall Rules for Certain Local Networks
407
Virtual Routers
408
Default Routes Filter
409
Extended Port Forwarding
410
IPX Router
412
Assigning Logical Interfaces to Bridge Groups
413
Remote Bridge
414
Pppoe Servers
415
Load Balancing
415
DSL Port Mapping
417
Direct DSL Channel Bundling
420
Dynamic Load Balancing
420
Static Load Balancing
421
Configuration of Load Balancing
422
N:N Mapping
425
Application Examples
426
Configuration
430
Establishing Connection with PPP
434
The Protocol
434
Everything O.k.? Checking the Line with LCP
436
Assignment of IP Addresses Via PPP
437
Settings in the PPP List
438
DSL Connection with PPTP
439
Extended Connection for Flat Rates-Keep-Alive
440
Callback Functions
440
Callback for Microsoft CBCP
441
Fast Callback
442
Callback with RFC 1570 (PPP LCP Extensions)
443
Overview of Configuration of Callback Function
443
Serial Interface
444
Introduction
444
System Requirements
445
Installation
445
Set the Serial Interface to Modem Operation
446
Configuration of Modem Parameters
447
Direct Entry of at Commands
449
Statistics
450
Trace Output
450
Configuration of Remote Sites for V.24 WAN Interfaces
450
Configuration of a Backup Connection on the Serial In- Terface
452
Contact Assignment of BAT Modem Adapter Kit
453
Manual Definition of the MTU
453
Configuration
454
Statistics
454
Wan Rip
454
The Rapid Spanning Tree Protocol
456
Classic and Rapid Spanning Tree
457
Improvements from Rapid Spanning Tree
457
Configuring the Spanning Tree Protocol
458
Status Reports Via the Spanning Tree Protocol
461
12 More Services
465
Automatic IP Address Administration with DHCP
465
The DHCP Server
465
DHCP-'On', 'Off', 'Auto', 'Client' or 'Forwarding
466
How Are the Addresses Assigned
467
Vendor Class and User Class Identifier on the DHCP Client
472
Dns
473
What Does a DNS Server Do
473
DNS Forwarding
474
Setting up the DNS Server
475
URL Blocking
478
Dynamic DNS
479
Accounting
481
The SYSLOG Module
484
Setting up the SYSLOG Module
484
Example Configuration with Lanconfig
484
Time Server for the Local Net
486
Configuration of the Time Server under Lanconfig
487
Configuration of the Time Server with Webconfig or Telnet
488
Configuring the NTP Clients
488
Scheduled Events
491
Regular Execution of Commands
491
CRON Jobs with Time Delay
492
Configuring the CRON Job
493
Pppoe Servers
495
Introduction
495
Example Application
495
Configuration
498
Radius
500
How RADIUS Works
502
Configuration of RADIUS as Authenticator or NAS
502
Radius Accounting
504
Configuring RADIUS as Server
509
Extensions to the RADIUS Server
511
New Authentication Method
511
EAP Authentication
512
RADIUS Forwarding
513
RADIUS Server Parameters
515
Radsec
517
Configuring RADSEC for the Client
517
Certificates for RADSEC
518
13 Appendix
519
Error Messages in Lanmonitor
519
General Error Messages
519
VPN Error Messages
519
SNMP Traps
523
Radio Channels
524
Radio Channels in the 2,4 Ghz Frequency Band
524
Radio Channels in the 5 Ghz Frequency Band
524
Radio Channels and Frequency Ranges for Indoor and Outdoor Operating
526
Rfcs Supported
528
Glossary
529
Index
533
4
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Hirschmann BAT54-Rail Specifications
General
Brand
Hirschmann
Model
BAT54-Rail
Category
Wireless Access Point
Language
English
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