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Prestige 334W User’s Guide
NAT Screens 10-7
21. In some cases, such as for unknown services or where one server can support more than one service (for
example both FTP and web service), it might be better to specify a range of port numbers.
In addition to the servers for specified services, NAT supports a default server. A service request that does
not have a server explicitly designated for it is forwarded to the default server. If the default is not defined,
the service request is simply discarded.
Many residential broadband ISP accounts do not allow you to run any server
processes (such as a Web or FTP server) from your location. Your ISP may
periodically check for servers and may suspend your account if it discovers any
active services at your location. If you are unsure, refer to your ISP.
The most often used port numbers are shown in the following table. Please refer to RFC 1700 for further
information about port numbers. Please also refer to the Supporting CD for more examples and details on
SUA/NAT.
Table 10-3 Services and Port Numbers
SERVICES PORT NUMBER
ECHO 7
FTP (File Transfer Protocol) 21
SMTP (Simple Mail Transfer Protocol) 25
DNS (Domain Name System) 53
Finger 79
HTTP (Hyper Text Transfer protocol or WWW, Web) 80
POP3 (Post Office Protocol) 110
NNTP (Network News Transport Protocol) 119
SNMP (Simple Network Management Protocol) 161
SNMP trap 162
PPTP (Point-to-Point Tunneling Protocol) 1723
10.3.2 Configuring Servers Behind SUA (Example)
Let's say you want to assign ports 21-25 to one FTP, Telnet and SMTP server (A in the example), port 80 to
another (B in the example) and assign a default server IP address of 192.168.1.35 to a third (C in the
example). You assign the LAN IP addresses and the ISP assigns the WAN IP address. The NAT network
appears as a single host on the Internet.
- Prestige 334W 1
- Copyright 2
- Interference Statement 3
- Caution 4
- ZyXEL Limited Warranty 5
- Customer Support 7
- Customer Support vii 8
- Table of Contents 9
- List of Figures 21
- List of Tables 27
- Preface 31
- Graphics Icons Key 32
- Part I: 33
- Chapter 1 35
- 1.2.2 Non-Physical Features 36
- 1.3.2 VPN Application 40
- Chapter 2 43
- 2.3 Resetting the Prestige 44
- 2.3.2 Navigation Panel 45
- Table 2-1 Screens Summary 46
- Chapter 3 49
- Wizard Setup 49
- 3.3 Wizard Setup: Screen 2 50
- 3.4 Wizard Setup: Screen 3 51
- 3.5 Wizard Setup: Screen 4 53
- 3.5.2 PPPoE Encapsulation 55
- 3.5.3 PPTP Encapsulation 57
- 3.6 Wizard Setup: Screen 5 58
- 10.0.0.0 - 10.255.255.255 59
- 172.16.0.0 - 172.31.255.255 59
- 3.6.4 WAN MAC Address 60
- 3.7 Basic Setup Complete 62
- Wizard Setup 3-15 63
- Figure 3-9 Wizard Finish 63
- Chapter 4 65
- Part II: 69
- Chapter 5 71
- System Screens 71
- 5-2 System Screens 72
- 5.3 Dynamic DNS 73
- 5.4 Configuring Dynamic DNS 73
- 5.5 Configuring Password 75
- 5.6 Configuring Time Zone 76
- 5-8 System Screens 78
- Table 5-4 Time Setting 78
- Chapter 6 79
- LAN Screens 79
- 6.3.3 RIP Setup 80
- 6.3.4 Multicast 80
- 6.4 Any IP 81
- 6.5 Configuring IP 82
- 6-6 LAN Screens 84
- Table 6-1 IP 84
- LAN Screens 6-7 85
- 6.6 Configuring Static DHCP 86
- 6.7 Configuring IP Alias 87
- 6-10 LAN Screens 88
- Table 6-3 IP Alias 88
- Chapter 7 89
- 7.1.3 ESS 90
- 7.2 Wireless LAN Basics 91
- Stations A and B do 92
- They can hear the 92
- Prestige 92
- 7.3 Configuring Wireless 93
- 7.4 Configuring Roaming 94
- Table 7-2 Roaming 97
- Chapter 8 99
- Wireless Security 99
- 8.3 WEP Overview 102
- 8.3.3 Preamble Type 104
- 8.5 Introduction to WPA 106
- 8.5.1 User Authentication 107
- 8.5.2 Encryption 107
- WPA - PSK Authentication 108
- 8.9 802.1x Overview 114
- 8-22 Wireless Security 120
- Prestige 334W User’s Guide 120
- 8.13 Configuring 802.1x 121
- 8.14 MAC Filter 123
- DESCRIPTION 124
- Authentication 127
- Accounting 127
- Access-Request 127
- Access-Reject 127
- Access-Accept 127
- • Access-Challenge 128
- • Accounting-Request 128
- 8.18 Configuring RADIUS 129
- 8-32 Wireless Security 130
- Table 8-11 RADIUS 130
- Chapter 9 131
- WAN Screens 131
- 9.4 Configuring WAN ISP 132
- WAN Screens 9-3 133
- 9.4.2 PPPoE Encapsulation 134
- WAN Screens 9-5 135
- 9.4.3 PPTP Encapsulation 136
- 9.5 Configuring WAN IP 137
- 9.7 Traffic Redirect 142
- WAN Screens 9-13 143
- Part III: 145
- Chapter 10 147
- Screens 147
- 10.1.2 What NAT Does 148
- 10.1.3 How NAT Works 148
- 10.1.4 NAT Application 149
- 10.1.5 NAT Mapping Types 150
- 10.2 Using NAT 152
- 10.3 SUA Server 152
- IP address assigned 154
- LABEL DESCRIPTION 155
- Configuring Address Mapping 158
- 10-16 NAT Screens 162
- Table 10-7 Trigger Port 162
- Chapter 11 163
- Static Route Screens 163
- 11-4 Static Route Screens 166
- Part IV: 167
- Chapter 12 169
- 12.2 UPnP and ZyXEL 170
- 12.3 Configuring UPnP 170
- Chapter 13 179
- Firewall 179
- 13-4 Firewall 182
- 13.3.1 LAN-to-WAN rules 183
- 13.3.2 WAN-to-LAN rules 183
- LABEL DESCRIPTION 185
- Restricted Web Features 185
- 13.5 Services 186
- 13-10 Firewall 188
- Table 13-3 Firewall: Service 188
- Part V: 189
- Chapter 14 191
- Remote Management Screens 191
- 14.2 Configuring WWW 192
- 14.3 Configuring Telnet 194
- 14.4 Configuring TELNET 194
- 14.5 Configuring FTP 196
- 14.6 SNMP 197
- 14.6.1 Supported MIBs 199
- 14.6.2 SNMP Traps 199
- 14.6.3 Configuring SNMP 200
- 14.7 Configuring DNS 201
- 14.8 Configuring Security 203
- Table 14-7 Security 204
- Chapter 15 205
- Introduction to IPSec 205
- 15.1.4 VPN Applications 206
- 15.2 IPSec Architecture 207
- 15.3 Encapsulation 208
- 15.4 IPSec and NAT 209
- Chapter 16 211
- VPN Screens 211
- 16.3 My IP Address 212
- 16.4 Secure Gateway Address 212
- 16.5 Summary Screen 213
- 16.6 Keep Alive 215
- 16.7 NAT Traversal 216
- 16.7.2 Remote DNS Server 217
- 16.8 ID Type and Content 218
- 16.9 Pre-Shared Key 220
- 16.10 Editing VPN Rules 220
- 16-12 VPN Screens 222
- VPN Screens 16-13 223
- 16-14 VPN Screens 224
- 16.11 IKE Phases 225
- 16.11.1 Negotiation Mode 227
- VPN Screens 16-19 229
- 16-20 VPN Screens 230
- Table 16-8 VPN IKE: Advanced 230
- VPN Screens 16-21 231
- 16-22 VPN Screens 232
- VPN Screens 16-23 233
- 16-24 VPN Screens 234
- 16.13 Manual Key Setup 235
- 16.14 Configuring Manual Key 236
- 16-28 VPN Screens 238
- VPN Screens 16-29 239
- 16.15 Viewing SA Monitor 240
- VPN Screens 16-35 245
- Part VI: 247
- Chapter 17 249
- Centralized Logs 249
- 17.2 Log Settings 250
- Centralized Logs 17-3 251
- Figure 17-2 Log Settings 251
- 17-4 Centralized Logs 252
- Table 17-2 log Settings 252
- Centralized Logs 17-5 253
- Chapter 18 255
- Media Bandwidth Management 255
- 18.1.7 Services 260
- 18.2 Configuration Screen 262
- 18.3.1 Bandwidth Borrowing 265
- 18.5 Monitor Screen 267
- Chapter 19 269
- Maintenance 269
- 19.3 DHCP Table Screen 272
- 19.4 Any IP Table 273
- 19.5 Association List 273
- 19.6 F/W Upload Screen 274
- 19.7 Configuration Screen 276
- 19.7.1 Backup Configuration 277
- 19.8 Restart Screen 279
- Part VII: 281
- Chapter 20 283
- Introducing the SMT 283
- Enter Password : **** 284
- ? > or ChangeMe 286
- # MENU TITLE DESCRIPTION 288
- Chapter 21 289
- Menu 1 General Setup 289
- Chapter 22 295
- Menu 2 WAN Setup 295
- 22-2 Menu 2 WAN Setup 296
- Table 22-1 Menu 2 WAN Setup 296
- Chapter 23 297
- Menu 3 LAN Setup 297
- 23.3.1 IP Alias Setup 300
- 23.4 Wireless LAN Setup 302
- 23-8 Menu 3 LAN Setup 304
- Edit MAC Address Filter= No 305
- Chapter 24 309
- Internet Access 309
- 24-2 Internet Access 310
- 24.5 Basic Setup Complete 313
- Chapter 25 315
- Remote Node Configuration 315
- 25.2.2 PPPoE Encapsulation 318
- 25.2.3 PPTP Encapsulation 320
- 25.3 Edit IP 321
- 25.4 Remote Node Filter 323
- FIELD DESCRIPTION EXAMPLE 324
- Chapter 26 327
- Static Route Setup 327
- 26-2 Static Route Setup 328
- Static Route Setup 26-3 329
- Chapter 27 331
- Dial-in User Setup 331
- Chapter 28 333
- 28.3 NAT Setup 335
- 28.3.1 Address Mapping Sets 336
- FIELD DESCRIPTION EXAMPLE 338
- 28.5 General NAT Examples 342
- Type= One-to-One 346
- Start= 192.168.1.10 346
- Start= 10.132.50.1 346
- NAT_SET 347
- NAT 28-19 351
- Chapter 29 353
- Enabling the Firewall 353
- Part VIII: 355
- Chapter 30 357
- Filter Configuration 357
- Active Data 358
- Filter Rule 359
- Filter Set 359
- ABBREVIATION DESCRIPTION 362
- Filter Configuration 30-9 365
- Length= 0 367
- 30.3 Example Filter 369
- 30.4 Filter Types and NAT 371
- 30.6 Applying a Filter 372
- 30.6.1 Applying LAN Filters 373
- Chapter 31 375
- SNMP Configuration 375
- 31.2 Supported MIBs 376
- 31.3 SNMP Configuration 376
- 31.4 SNMP Traps 378
- 1. Change Password 379
- 2. RADIUS Server 379
- 32.1.3 802.1x 381
- Chapter 33 385
- 33.2 System Information 387
- 33.2.2 Console Port Speed 388
- 33.3 Log and Trace 389
- 3. Filter log 391
- 4. PPP log 391
- 5. Firewall log 392
- 33.4 Diagnostic 393
- 33.4.1 WAN DHCP 394
- Chapter 34 397
- 34.2 Backup Configuration 398
- 34.2.1 Backup Configuration 399
- 34.2.4 GUI-based FTP Clients 400
- 34.2.7 TFTP Command Example 401
- 34.3 Restore Configuration 402
- 34.3.1 Restore Using FTP 403
- 34.4.1 Firmware File Upload 404
- 34.4.5 TFTP File Upload 406
- 8. Command Interpreter Mode 409
- 35.2 Call Control Support 410
- 35.2.1 Budget Management 411
- 35.3 Time and Date Setting 412
- 35.3.1 Resetting the Time 414
- Chapter 36 417
- Remote Management 417
- Chapter 37 419
- Call Scheduling 419
- Part IX: 423
- Chapter 38 425
- VPN/IPSec Setup 425
- 38.2 IPSec Summary Screen 426
- VPN/IPSec Setup 38-3 427
- 38-4 VPN/IPSec Setup 428
- 38.3 IPSec Setup 429
- 38-6 VPN/IPSec Setup 430
- VPN/IPSec Setup 38-7 431
- 38-8 VPN/IPSec Setup 432
- VPN/IPSec Setup 38-9 433
- 38.4 IKE Setup 434
- 38-12 VPN/IPSec Setup 436
- 38.5 Manual Setup 437
- VPN/IPSec Setup 38-15 439
- Chapter 39 441
- SA Monitor 441
- 39-2 SA Monitor 442
- Part X: 443
- Appendix A 445
- Appendix B 449
- Call Connection 450
- PPP Data Connection 451
- Appendix C 453
- NetBIOS Filter Commands 453
- Appendix D 457
- Log Descriptions 457
- Appendix E 461
- Properties 463
- Windows 2000/NT/XP 466
- Macintosh OS 8/9 471
- Appendix F 475
- Appendix G 479
- Client computer 480
- Appendix H 481
- Types of EAP Authentication 481
- Appendix I 483
- Recommendation 483
- Appendix J 485
- Protection 485
- Appendix K 487
- Triangle Route 487
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