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Prestige 645R-A Series User’s Guide
6-6 NAT
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.
Table 6-3 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
6.3.2 Configuring Servers Behind SUA (Example)
Let's say you want to assign ports 22-25 to one server, port 80 to another and assign a default server IP
address of 192.168.1.35 as shown in the next figure.
- Prestige 645R-A series 1
- Copyright 2
- (FCC) Interference Statement 3
- ZyXEL Limited Warranty 4
- Customer Support 5
- Table of Contents 6
- List of Figures 12
- List of Tables 16
- List of Charts 18
- Preface 19
- Introduction to DSL 21
- Part I: 23
- Chapter 1 25
- 1.3.1 Internet Access 27
- Chapter 2 29
- Hardware Installation 29
- 2.2.1 DSL Port 30
- 2-4 Hardware Installation 32
- Chapter 3 33
- Wizard Setup 34
- Navigation panel 34
- 3.4 Configuring Password 35
- 3.5 Resetting the Prestige 36
- Chapter 4 37
- 4.3 Multiplexing 38
- 4.4 VPI and VCI 38
- DESCRIPTION 39
- 4.7 IP Address Assignment 41
- 4.9 NAT 42
- 4.10.1 PPPoE 43
- 4.10.2 RFC 1483 44
- 4.10.3 ENET ENCAP 45
- 4.10.4 PPPoA 46
- 4.11 Basic Setup Complete 48
- Part II: 49
- Chapter 5 51
- LAN Setup 51
- 5.4 LAN TCP/IP 52
- 5.4.3 RIP Setup 53
- 5.4.4 Multicast 53
- 5.5 Configuring LAN 54
- LAN Setup 5-5 55
- Table 5-1 LAN 55
- Chapter 6 57
- 6.1.3 How NAT Works 58
- 6.1.4 NAT Application 59
- 6.1.5 NAT Mapping Types 59
- 6.3 SUA Server 61
- 6.4 Selecting the NAT Mode 63
- 6.5 Configuring SUA Server 64
- LABEL DESCRIPTION 65
- NAT 6-13 69
- Chapter 7 71
- Dynamic DNS Setup 71
- Part III: 73
- Chapter 8 75
- Maintenance 8-3 77
- Table 8-1 System Status 77
- 8.2.1 System Statistics 78
- Maintenance 8-5 79
- 8.3 DHCP Table Screen 80
- 8.4 Diagnostic Screens 81
- 8.5 Firmware Screen 84
- Part IV: 87
- Chapter 9 89
- Introducing the SMT 89
- ? > or ChangeMe 91
- Chapter 10 95
- General Setup 95
- 10-2 General Setup 96
- Chapter 11 99
- Ethernet Setup 99
- Chapter 12 103
- Internet Access 103
- 12.4 IP Alias Setup 104
- Edit IP Alias= Yes 105
- 12.5 Route IP Setup 106
- Chapter 13 109
- Remote Node Configuration 109
- 13.3 Metric 113
- 13.5 Remote Node Filter 117
- Separate VPI and 121
- VCI numbers must 121
- Only one set of VPI 122
- Chapter 14 123
- Static Route Setup 123
- Static Route Setup 14-3 125
- 14-4 Static Route Setup 126
- Chapter 15 127
- Bridging Setup 127
- Bridge= Yes 128
- Edit IP/Bridge= Yes 128
- 15-4 Bridging Setup 130
- Chapter 16 131
- NAT= SUA Only 132
- 16.3 NAT Setup 133
- 16.3.1 Address Mapping Sets 134
- FIELD DESCRIPTION EXAMPLE 136
- 16.5 General NAT Examples 141
- NAT= Full Feature 145
- Type= One-to-One 146
- Start= 192.168.1.10 146
- Start= 10.132.50.1 146
- Part V: 149
- Chapter 17 151
- Filter Configuration 151
- Outgoing 152
- Filter Rule 153
- Filter Set 153
- FIELD DESCRIPTION 156
- Len Length 157
- 17.3.1 TCP/IP Filter Rule 158
- Filter Configuration 17-9 159
- 17.3.2 Generic Filter Rule 162
- 17.4 Filter Types and NAT 164
- 17.5 Example Filter 164
- 17.6.1 Ethernet Traffic 168
- 17.6.2 Remote Node Filters 168
- Chapter 18 171
- SNMP Configuration 171
- 18.2 Supported MIBs 172
- 18.3 SNMP Configuration 172
- 18.4 SNMP Traps 174
- Chapter 19 175
- 19.3 System Information 177
- 19.4 Log and Trace 179
- 19.4.2 Syslog and Accounting 180
- 19.5 Diagnostic 182
- Chapter 20 185
- Maintenance 185
- 20.2 Backup Configuration 186
- 20.2.1 Backup Configuration 187
- 20.2.4 GUI-based FTP Clients 188
- 20.2.7 TFTP Command Example 189
- 20.3 Restore Configuration 190
- 20.4.1 Firmware File Upload 192
- 20.4.5 TFTP File Upload 194
- Chapter 21 197
- IP Policy Routing 197
- IP Policy Routing 21-3 199
- 21.5 Applying an IP Policy 201
- IP Policies= 1,2 205
- Chapter 22 207
- Call Scheduling 207
- Part VI: 211
- Appendix A 213
- Troubleshooting 213
- A.2 Telnet 214
- A.3 Web Configurator 215
- A.5 LAN Interface 216
- A.6 WAN Interface 216
- A.7 Internet Access 217
- A.8 Remote Node Connection 218
- Appendix B 219
- IP Subnetting 219
- B-8 IP Subnetting 226
- Appendix C 227
- Appendix D 229
- Installing Components 230
- Configuring 230
- Verifying Settings 232
- Windows 2000/NT/XP 233
- Macintosh OS 8/9 237
- Appendix E 241
- Virtual Circuit Topology 241
- Appendix F 243
- Splitters and Microfilters 243
- Appendix G 245
- Appendix H 247
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