Chapter 11 Network Address Translation (NAT)
VMG1312-B Series User’s Guide
199
11.8.4 NAT Application
The following figure illust rat es a possible NAT applicat ion, where t hree inside LANs ( logical LANs
using I P alias) behind t he Device can com m unicat e wit h t hree dist inct WAN net works.
Figure 85
NAT Applicat ion Wit h I P Alias
Port Forwarding: Services and Port Numbers
The m ost oft en used port num bers are shown in t he following t able. Please refer t o RFC 1700 for
furt her inform at ion about port num bers. Please also refer t o t he Support ing CD for m ore exam ples
and det ails on port forwarding and NAT.
Table 62
Services and Port Num bers
SERVICES
PORT NUMBER
ECHO
7
FTP ( File Transfer Prot ocol)
21
SMTP ( Sim ple Mail Transfer Prot ocol)
25
DNS ( Dom ain Nam e Syst em )
53
Finger
79
HTTP ( Hyper Text Transfer prot ocol or WWW, Web)
80
POP3 ( Post Office Pr ot ocol)
110
NNTP ( Net w ork New s Transport Prot ocol)
119
SNMP ( Sim ple Net w or k Managem ent Pr ot ocol)
161
SNMP t rap
162
PPTP ( Point - t o- Point Tunneling Prot ocol)
1723
Summary of Contents for VMG1312-B Series
Page 4: ...Contents Overview VMG1312 B Series User s Guide 4 Troubleshooting 289 ...
Page 14: ...Table of Contents VMG1312 B Series User s Guide 14 ...
Page 15: ...15 PART I User s Guide ...
Page 16: ...16 ...
Page 30: ...Chapter 2 The Web Configurator VMG1312 B Series User s Guide 30 ...
Page 35: ...Chapter 4 Tutorials VMG1312 B Series User s Guide 35 7 Click Apply to save your settings ...
Page 77: ...77 PART II Technical Reference ...
Page 78: ...78 ...
Page 166: ...Chapter 9 Routing VMG1312 B Series User s Guide 166 ...
Page 184: ...Chapter 10 Quality of Service QoS VMG1312 B Series User s Guide 184 ...
Page 210: ...Chapter 13 Interface Group VMG1312 B Series User s Guide 210 ...
Page 226: ...Chapter 15 Firewall VMG1312 B Series User s Guide 226 ...
Page 232: ...Chapter 17 Parental Control VMG1312 B Series User s Guide 232 ...
Page 242: ...Chapter 19 Certificates VMG1312 B Series User s Guide 242 ...
Page 246: ...Chapter 20 Log VMG1312 B Series User s Guide 246 ...
Page 250: ...Chapter 21 Traffic Status VMG1312 B Series User s Guide 250 ...
Page 256: ...Chapter 24 IGMP Status VMG1312 B Series User s Guide 256 ...
Page 260: ...Chapter 25 xDSL Statistics VMG1312 B Series User s Guide 260 ...
Page 262: ...Chapter 26 User Account VMG1312 B Series User s Guide 262 ...
Page 268: ...Chapter 29 TR 064 VMG1312 B Series User s Guide 268 ...
Page 272: ...Chapter 30 Time Settings VMG1312 B Series User s Guide 272 ...
Page 278: ...Chapter 32 Logs Setting VMG1312 B Series User s Guide 278 ...
Page 296: ...Chapter 36 Troubleshooting VMG1312 B Series User s Guide 296 ...
Page 336: ...Appendix C Pop up Windows JavaScripts and Java Permissions VMG1312 B Series User s Guide 336 ...
Page 350: ...Appendix D Wireless LANs VMG1312 B Series User s Guide 350 ...
Page 374: ...VMG1312 B Series User s Guide 374 Index ...