US Robotics NETServer/8 Manual de usuario Pagina 174
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8-22 Packet Filter
s
IP:
010 ACCEPT tcp-src-port >= 24;
The following rule example accepts only TCP packets that have
a destination port number that is in the range of 24 to 39:
IP:
010 AND tcp-dest-port > 23;
020 ACCEPT tcp-dest-port < 40;
The following rule example accepts only UDP packets that have
a destination port number that is in the range of 24 to 39:
IP:
010 AND udp-dest-port > 23;
020 ACCEPT udp-dest-port < 40;
You can create rules that accept or reject TCP or UDP packets.
The following rule example rejects TCP packets:
IP:
010 REJECT protocol = tcp;
- 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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