US Robotics NETServer/8 Manual de usuario Pagina 159
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Valorado. / 5. Basado en revisión del cliente
Packet Filters 8-
7
To be valid, a filter file must always have the following file
descriptor on the first line:
#filter
Ensure that there is no blank space before the descriptor,
otherwise an error will occur.
The remainder of the filter file is partitioned into protocol
sections. Each protocol section has a descriptive header and
contains the filter rules for that protocol.
Protocol Sections
A single filter file can contain all valid protocol sections in any
order, but the sections cannot be repeated. The following
conditions will generate errors or prevent normal filtering:
• If you do not specify a protocol section in the filter file, no
filtering will occur and packets of that protocol type will be
accepted
• If you specify a protocol section but do not define any rules,
an error will occur.
Note:: To comment out a protocol section, you must place a
pound (#) sign before the section header and before all rules
defined in the section.
The following table describes the valid protocol sections that
you can define in the filter file:
Protocol Section Description
IP:
IP protocol data filter section
IP-CALL:
IP protocol call filter section
IP-RIP:
IP RIP advertising filter section
IPX:
IPX protocol data filter section
IPX-CALL:
IPX protocol call filter section
IPX-RIP:
IPX RIP advertising filter section
IPX-SAP:
IPX SAP advertising filter section
ATALK:
AppleTalk protocol data filter section
ATALK-CALL:
AppleTalk protocol call filter section
ATALK-ZIP:
AppleTalk ZIP advertising filter
LOGIN-ACCESS:
Login Access filter section
- NETServer 8/16 Plus 1
- Warranty and Service 3
- Software/Firmware Updates 5
- Hardware Support 6
- Technical Support 7
- Configuration Overview 3-1 10
- IP Terminal Server Setup 4-1 11
- Network Dial In Access 5-1 11
- LAN-to-LAN Routing 7-1 12
- Packet Filters 8-1 13
- Administrative Tools 9-1 13
- Addressing Schemes B-1 14
- LEDs and DIP Switches C-1 15
- Event Messages D-1 15
- Table of Contents 16
- Chapter 1 17
- AppleTalk Phase II Support 18
- Overview 1 19
- RTMP Support 20
- IPX and AppleTalk Spoofing 20
- IPXWAN Support 21
- IPX Dialout and Address Pools 21
- TFTP Download Capability 21
- Command File Support 21
- Enhanced RADIUS Support 22
- Improved Security 22
- Command Line Editing 23
- 1-8 Overvie 24
- Network Dial In Access 25
- Dial-Out Access 26
- LAN-to-LAN Routing 27
- 1-12 Overvie 28
- Chapter 2 29
- Basic Installation and Setup 29
- TCP/IP Reference Material 30
- I-modem Basics 31
- ISDN Basic Rate Interface 32
- B- and D-channels 33
- Ordering ISDN Service 34
- The U.S. Robotics I-team 35
- Requesting Service 35
- IBM-PC Compatible Computers 37
- Macintosh Computers 37
- UNIX-Based Computers 37
- Quick Setup (CLI) 38
- and use keywords 39
- You can abbreviate commands 39
- Command syntax and CLI rules 40
- Command completion 40
- Command retrieval 41
- Command reprint 41
- Paused output display 41
- Saving changes 42
- Using network services 42
- Hardware Installation 43
- Back Panel 44
- Quick Setup 48
- n.n.n.n 50
- ________ 52
- Setting Up the I-modems 56
- IP Configuration 60
- <integer> 61
- IPX Configuration 63
- Setting IPX Parameters 65
- AppleTalk Configuration 66
- Configuring a Manage User 67
- Chapter 3 69
- Configuration Overview 69
- 3-2 Configuration Overvie 70
- Configurable Table Overview 71
- Facilities Table 72
- Hosts Table 72
- Module Table 72
- Network Table 73
- Filter and Associated Tables 73
- Routes Table 73
- SNMP Configuration Tables 73
- Syslog Table 74
- Chapter 4 75
- IP Terminal Server Setup 75
- 4-2 IP Terminal Server Setup 76
- Configuring Login Hosts 77
- Step 2 - Check Your Work 78
- Step 3 - Save Your Work 78
- Configuring Login Users 79
- 4-6 IP Terminal Server Setup 80
- IP Terminal Server Setup 4 81
- 4-10 IP Terminal Server Setup 84
- Chapter 5 85
- 5-2 Network Dial In Acces 86
- IPX Parameters 88
- AppleTalk Parameters 88
- Remote Computer Setup 89
- Configuring Address Pools 90
- User Configuration Overview 91
- NETServer Defaults 92
- Remote Addressing Options 92
- Network User Types 92
- Configuring an IP User 93
- 5-10 Network Dial In Acces 94
- Configuring an IPX User 96
- Network Dial In Access 5-1 97
- Step 5 - Save Your Work 98
- Configuring an AppleTalk User 99
- Step 4 - Save Your Work 100
- Configuring PPP Parameters 101
- 5-18 Network Dial In Acces 102
- Remote Access Case Study 103
- Configuring User_A 104
- Configuring User_B 104
- Configuring User_C 105
- 5-22 Network Dial In Acces 106
- Chapter 6 107
- Network Dial-Out Access 107
- Overview 108
- Telnet Dial-Out 109
- Add Modem Groups 110
- Add Dial-Out Service 110
- Add Dial-Out Users 111
- Telnet users 112
- Editing Network Service 113
- Using NPC’s DOS Client 114
- Sub-Network Version ELS 115
- 6-10 Network Dial-Out Acces 116
- NPC DOS Command Overview 117
- 6-12 Network Dial-Out Acces 118
- Network Dial-Out Access 6-1 119
- 6-14 Network Dial-Out Acces 120
- 6-16 Network Dial-Out Acces 122
- Setting Up Security 123
- Opening an Application 124
- 6-20 Network Dial-Out Acces 126
- NETServer A 127
- NETServer 127
- LAN A LAN 127
- LAN-to-LAN Routing Overview 128
- Dynamic Routing Settings 129
- Dialout Scripts 129
- Bandwidth-On-Demand 129
- IP Routing 129
- IPX Routing 130
- AppleTalk Routing 130
- Static Routes 131
- Dynamic Routes 131
- How Packets are Routed 132
- Authentication 133
- Step 1 - Add the User 134
- LAN-to-LAN Routing 7 135
- 7-10 LAN-to-LAN Routin 136
- LAN-to-LAN Routing 7-11 137
- 7-12 LAN-to-LAN Routin 138
- 7-14 LAN-to-LAN Routin 140
- 7-16 LAN-to-LAN Routin 142
- Step 10 - Save Your Work 143
- LAN-to-LAN Routing Case Study 144
- Assumptions 145
- Configuring NETServer A 145
- Configuring LAN Networks 146
- Adding a User 146
- LAN-to-LAN Routing 7-21 147
- Setting PAP Authentication 148
- Save the Configuration 148
- Configuring NETServer B 149
- Chapter 8 153
- Packet Filters 153
- Filtering Overview 154
- Information Sources 155
- Filter Types 156
- Advertisement Filters 157
- Creating Filters 158
- Protocol Sections 159
- Protocol Rules 160
- Packet Filters 8 161
- Generic Filter Rules 162
- Creating Filter Files 163
- 8-12 Packet Filter 164
- Configuring Filters 166
- User Filters 167
- Assigning Filters 167
- Setting Filter Access 168
- Managing Filters 169
- 8-18 Packet Filter 170
- Deleting a Packet Filter 171
- Verifying Filter File Syntax 171
- Showing Filter File Contents 171
- Filter Examples 172
- Packet Filters 8-21 173
- 8-22 Packet Filter 174
- Packet Filters 8-2 175
- IP RIP Packet Filtering 176
- IP Call Filtering 177
- ICMP Packet Filtering 177
- 8-26 Packet Filter 178
- IPX RIP Packet Filtering 179
- IPX SAP Packet Filtering 179
- IPX Call Filtering 180
- ZIP Packet Filtering 181
- AppleTalk Call Filtering 181
- Keywords 182
- Packet Filters 8-31 183
- 8-32 Packet Filter 184
- Chapter 9 185
- Administrative Tools 185
- Command History 186
- Idle Timeout 186
- Login Required 186
- Local Prompt 186
- Setting the System 187
- Running Script Files 187
- 9-4 Administrative Tool 188
- TELNET Access Port 189
- Discarding and Renaming Files 189
- Dial and Connect Commands 190
- Exiting the CLI 191
- Network Services 191
- 9-8 Administrative Tool 192
- Deleting a Network Service 193
- Using TFTP 193
- Using Rlogin and TELNET 194
- Connected to 172.144.122.144 195
- Escape character is ^] 195
- Troubleshooting Commands 196
- Resolving Addresses 197
- Resolving Host Names 197
- Using Ping 197
- 199.55.55.55 is alive 198
- Displaying System Information 199
- Show Commands 200
- Show I-modem parameters 201
- DIP Switches 202
- V.34 Modem DIP Switches 203
- I-modem DIP Switches 203
- 9-20 Administrative Tool 204
- Administrative Tools 9-21 205
- Installation 206
- Administrative Tools 9-2 207
- 9-24 Administrative Tool 208
- Appendix A 209
- Notices & Technical 209
- Specifications 209
- For More Information 210
- Notices: IC (Industry Canada) 212
- Hardware Specifications 213
- Environmental Specifications 214
- Power Specifications 214
- Electrical Specifications 215
- 10Base-T 216
- Pin Function 218
- Error Control Standards 220
- Data Compression Protocols 220
- Data Format 222
- Flow Control Buffer Capacity 222
- Command Buffer Capacity 222
- Test Options 222
- Call Progress Codes 222
- Failed Call Time-out 223
- Answer Tone Time-out 223
- Fax Service Class 1 Commands 223
- FAX Service Class 2 Commands 224
- Answer Tone Detector 224
- Equalization 224
- V.Fast Class 225
- USR-V.32 terbo/V.32 bis/V.32 225
- Receiver Carrier Frequencies 226
- Receive Sensitivity 228
- Transmit Level 228
- Software Specifications 229
- Filtering & Security 230
- PPP Specific Features 230
- Industry Standards Support 230
- Client Dial-up Support 231
- Appendix B 233
- Addressing Schemes 233
- IP Addressing Basics 234
- Subnetting 235
- Subnets of Class C networks 236
- Reserved Addresses 237
- B-6 Addressing Scheme 238
- Addressing Schemes B 239
- B-8 Addressing Scheme 240
- Supernet Example 242
- Addressing Schemes B-11 243
- IP Subnet Mask Address Table 244
- Appendix C 245
- LEDs and DIP Switches 245
- Run/Fail LED 246
- Modem Indicators 247
- NETServer Indicators 248
- V.34 DIP Switches 250
- LEDs and DIP Switches C-7 251
- LEDs and DIP Switches C-9 253
- C-10 LEDs and DIP Switches 254
- Appendix D 255
- Event Messages 255
- Event Logging Levels 256
- Using Syslog 257
- Setting the Event Log Level 258
- Event Message Examples 259
- D-6 Event Message 260
- Event Messages D 261
- IPX Messages 262
- User Manager Messages 264
- UDP Messages 265
- Telnet Messages 266
- D-14 Event Message 268
- Appendix E 269
- RADIUS Authentication and 269
- Accounting 269
- Performing Authentication 270
- RADIUS Authentication Process 271
- Required Parameters 272
- User-Name 273
- User-Password 273
- Optional Parameters 274
- Login-User 275
- Dialback-Login-User 275
- Framed-User 276
- Dialback-Framed-User 276
- Framed-Protocol 277
- Framed-IP-Address 278
- Framed-IP-Netmask 278
- Framed-Routing 279
- Filter-Id 279
- Framed-Compression 280
- Login-IP-Host 280
- Login-Service 281
- Login-Port 281
- Reply-Message 282
- Expiration 282
- Framed-Route 282
- Framed-IPX-Network 283
- Session-Timeout 283
- NETServer-Specific Parameters 284
- Channel-Expansion 285
- Channel-Decrement 285
- Compression-Algorithm 285
- Expansion-Algorithm 286
- Receive-Acc-Map 286
- Transmit-Acc-Map 286
- Compression-Reset-Mode 287
- Min-Compression-Size 287
- Spoofing 288
- Send-Password 288
- Start-Time 289
- End-Time 289
- RADIUS Accounting Examples 294
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