ZyXEL Communications VMG5313-B30A Guía de usuario Pagina 200
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Chapter 11 Network Address Translation (NAT)
VMG1312-B Series User’s Guide
200
Port Forwarding 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.
Figure 86 Multiple Servers Behind NAT Example
D=192.168.1.36
192.168.1.1
IP address assigned by ISP
A=192.168.1.33
B=192.168.1.34
C=192.168.1.35
- VMG1312-B Series 1
- Related Documentation 2
- Contents Overview 3
- Table of Contents 10
- VMG1312-B Series User’s Guide 10
- Table of Contents 11
- CHAPTER 1 17
- ADSL / VDSL 18
- File Sharing 19
- Media Server 19
- 1.5 LEDs (Lights) 20
- 1.6 The RESET Button 21
- 1.7 Wireless Access 21
- CHAPTER 2 23
- 2.2 Web Configurator Layout 25
- 2.2.2 Main Window 26
- 2.2.3 Navigation Panel 26
- LINK TAB FUNCTION 27
- CHAPTER 3 31
- CHAPTER 4 33
- Chapter 4 Tutorials 35
- SSID Example 36
- Security Mode WPA-PSK 36
- 802.11 Mode 802.11b/g/n Mixed 36
- 4.3.2 Using WPS 38
- Wireless Client 39
- PIN Configuration 40
- 4.3.3 Without WPS 41
- SSID Company VIP Guest 42
- Chapter 4 Tutorials 44
- R’s N2 192.168.10.2 47
- B 192.168.10.33 47
- 10,000 kbps 48
- Tutorial: Advanced > QoS 49
- Josephine 53
- Computer with 55
- ZyXEL Device 55
- USB Storage Device 55
- Windows Media Player 55
- Windows 7 57
- DMA-2500 59
- Tutorial: Add a Port Window 62
- Tutorial: Add a Port Wizard 62
- Tutorial: Printers Folder 65
- Tutorial: Macintosh HD 74
- Tutorial: Macintosh HD folder 74
- Tutorial: Printer Model 76
- Tutorial: Print Server 76
- CHAPTER 5 79
- 5.3 The Status Screen 80
- CHAPTER 6 83
- 6.1.2 What You Need to Know 84
- IPv6 Introduction 85
- 6.2 The Broadband Screen 86
- 6.2.1.1 Routing Mode 87
- Chapter 6 Broadband 88
- Table 8 Routing Mode 88
- Chapter 6 Broadband 89
- 6.2.1.2 Bridge Mode 91
- 6.3 The 3G Backup Screen 94
- 6.4 The Advanced Screen 98
- 6.5 The 8021x Screen 99
- 6.6 Technical Reference 100
- Encapsulation 101
- IP over Ethernet 101
- PPP over ATM (PPPoA) 101
- PPP over Ethernet (PPPoE) 101
- RFC 1483 101
- Multiplexing 102
- Traffic Shaping 102
- ATM Traffic Classes 103
- IP Address Assignment 104
- Introduction to VLANs 104
- Multicast 105
- DNS Server Address Assignment 105
- IPv6 Addressing 105
- IPv6 Prefix and Prefix Length 105
- CHAPTER 7 107
- 7.2 The General Screen 108
- 7.2.1 No Security 110
- 7.2.2 Basic (WEP Encryption) 111
- 7.2.4 WPA(2) Authentication 114
- 7.3 The More AP Screen 115
- 7.3.1 Edit More AP 116
- 7.4 MAC Authentication 117
- 7.5 The WPS Screen 118
- 7.6 The WMM Screen 120
- 7.7 The WDS Screen 121
- 7.7.1 WDS Scan 122
- 7.8 The Others Screen 123
- Chapter 7 Wireless 124
- LABEL DESCRIPTION 124
- 7.10 Technical Reference 125
- Radio Channels 126
- 7.10.3.1 SSID 128
- 7.10.3.2 MAC Address Filter 128
- 7.10.3.3 User Authentication 128
- 7.10.4 Signal Problems 129
- 7.10.5 BSS 130
- 7.10.6 MBSSID 130
- 7.10.7 Preamble Type 131
- 7.10.9.2 PIN Configuration 132
- 7.10.9.3 How WPS Works 134
- CLIENT 1 136
- CLIENT 2 136
- 7.10.9.5 Limitations of WPS 137
- CHAPTER 8 139
- 8.1.2 What You Need To Know 140
- 8.2 The LAN Setup Screen 141
- Chapter 8 Home Networking 143
- 8.3 The Static DHCP Screen 144
- 8.4 The UPnP Screen 146
- Installing UPnP in Windows Me 147
- Installing UPnP in Windows XP 148
- Networking Services 149
- Network Co nnections 150
- Web Configurator Easy Access 152
- 8.8 The STB Vendor ID Screen 156
- 8.9 The LAN VLAN Screen 157
- 8.10 Technical Reference 157
- LANs, WANs and the Device 158
- IP Pool Setup 158
- 8.10.4 LAN TCP/IP 159
- CHAPTER 9 161
- 9.2 The Routing Screen 162
- 9.2.1 Add/Edit Static Route 163
- Chapter 9 Routing 166
- CHAPTER 10 167
- 10.2 What You Need to Know 168
- Traffic Policing 169
- 10.4 The Queue Setup Screen 170
- 10.5 The Class Setup Screen 172
- 10.5.1 Add/Edit QoS Class 174
- 10.7 The QoS Monitor Screen 179
- 10.8 Technical Reference 180
- IP Precedence 181
- Token Bucket 182
- Two Rate Three Color Marker 183
- CHAPTER 11 185
- Port Forwarding 186
- Finding Out More 186
- 192.168.1.1 187
- IP Address assigned by ISP 187
- 11.3 The Applications Screen 189
- 11.3.1 Add New Application 190
- 11.5 The DMZ Screen 193
- 11.6 The ALG Screen 194
- 11.8 Technical Reference 196
- 11.8.2 What NAT Does 197
- Inside Local 198
- Address (ILA) 198
- Inside Global 198
- Address (IGA) 198
- 11.8.4 NAT Application 199
- Port Forwarding Example 200
- CHAPTER 12 201
- 12.2 The DNS Entry Screen 202
- 12.3 The Dynamic DNS Screen 203
- Chapter 12 Dynamic DNS Setup 204
- CHAPTER 13 205
- Internet 206
- Chapter 13 Interface Group 209
- Chapter 13 Interface Group 210
- CHAPTER 14 211
- 14.2 The File Sharing Screen 212
- 14.2.1 Before You Begin 213
- 14.3 The Media Server Screen 214
- 14.4.1 Before You Begin 215
- CHAPTER 15 217
- 15.1.2 What You Need to Know 218
- 15.2 The Firewall Screen 219
- 15.3 The Service Screen 219
- 15.3.1 Add/Edit a Service 220
- Chapter 15 Firewall 222
- 15.5 The DoS Screen 224
- Chapter 15 Firewall 225
- CHAPTER 16 227
- Chapter 16 MAC Filter 228
- CHAPTER 17 229
- Chapter 17 Parental Control 231
- Chapter 17 Parental Control 232
- CHAPTER 18 233
- 18.2.1 Add/Edit a Schedule 234
- CHAPTER 19 235
- 19.4 The Trusted CA Screen 239
- Chapter 19 Certificates 242
- CHAPTER 20 243
- 20.2 The System Log Screen 244
- 20.3 The Security Log Screen 245
- Chapter 20 Log 246
- CHAPTER 21 247
- Chapter 21 Traffic Status 248
- 21.3 The LAN Status Screen 249
- CHAPTER 22 251
- Chapter 22 ARP Table 252
- CHAPTER 23 253
- Chapter 23 Routing Table 254
- CHAPTER 24 255
- Chapter 24 IGMP Status 256
- CHAPTER 25 257
- Chapter 25 xDSL Statistics 258
- Chapter 25 xDSL Statistics 259
- CHAPTER 26 261
- Chapter 26 User Account 262
- CHAPTER 27 263
- Chapter 27 Remote Management 264
- CHAPTER 28 265
- Chapter 28 TR-069 Client 266
- CHAPTER 29 267
- Chapter 29 TR-064 268
- CHAPTER 30 269
- Chapter 30 Time Settings 270
- Chapter 30 Time Settings 271
- CHAPTER 31 273
- CHAPTER 32 275
- 32.2.1 Example E-mail Log 276
- Chapter 32 Logs Setting 278
- CHAPTER 33 279
- CHAPTER 34 281
- Restore Configuration 282
- 34.3 The Reboot Screen 283
- CHAPTER 35 284
- 35.4 802.1ag 286
- 35.5 OAM Ping Test 287
- CHAPTER 36 289
- 36.2 Device Access and Login 290
- 36.3 Internet Access 292
- 36.5 USB Device Connection 294
- 36.6 UPnP 294
- MSN messenger 295
- Chapter 36 Troubleshooting 296
- APPENDIX A 297
- Installing Components 298
- Configuring 298
- Verifying Settings 300
- Windows 2000/NT/XP 300
- Windows Vista 305
- Macintosh OS 8/9 312
- Macintosh OS X 313
- Using Configuration Files 317
- APPENDIX B 319
- Subnet Masks 320
- Network Size 321
- Notation 321
- Subnetting 322
- Example: Four Subnets 323
- Example: Eight Subnets 324
- Subnet Planning 325
- Configuring IP Addresses 326
- Private IP Addresses 326
- APPENDIX C 327
- JavaScripts 330
- Java Permissions 332
- JAVA (Sun) 333
- Mozilla Firefox 334
- APPENDIX D 337
- Fragmentation Threshold 340
- IEEE 802.11g Wireless LAN 341
- Wireless Security Overview 341
- IEEE 802.1x 342
- Types of RADIUS Messages 342
- Types of EAP Authentication 343
- PEAP (Protected EAP) 344
- Dynamic WEP Key Exchange 344
- WPA and WPA2 345
- Encryption 345
- User Authentication 346
- Types of Antennas for WLAN 349
- Positioning Antennas 349
- Appendix D Wireless LANs 350
- APPENDIX E 351
- Global Address 352
- Unspecified Address 352
- Loopback Address 352
- Multicast Address 352
- Subnet Masking 353
- Interface ID 353
- Identity Association 353
- DHCP Relay Agent 354
- Prefix Delegation 354
- IPv6 Cache 355
- Multicast Listener Discovery 355
- MLD Messages 355
- APPENDIX F 359
- Appendix F Services 360
- Appendix F Services 361
- APPENDIX G 363
- Notices 364
- MitraStar Limited Warranty 364
- Registration 365
- Safety Warnings 365
- Appendix G Legal Information 366
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