Chapter 11 Network Address Translation (NAT)
VMG1312-B Series User’s Guide
191
For exam ple:
Figure 77
Trigger Port Forwarding Process: Exam ple
1
Jane request s a file from t he Real Audio server ( port 7070) .
2
Port 7070 is a “ t rigger ” port and causes t he Device t o record Jane’s com put er I P address. The
Device associat es Jane's com put er I P address wit h t he " open" port range of 6970- 7170.
3
The Real Audio server responds using a port num ber ranging bet ween 6970- 7170.
4
The Device forwards t he t raffic t o Jane’s com put er I P address.
5
Only Jane can connect t o t he Real Audio server unt il t he connect ion is closed or t im es out . The
Device t im es out in t hree m inut es wit h UDP ( User Dat agram Prot ocol) or t wo hours wit h TCP/ I P
( Transfer Cont rol Prot ocol/ I nt ernet Prot ocol) .
Click
N e t w or k Se t t in g > N AT > Por t Tr igge r ing
t o open t he following screen. Use t his screen t o
view your Device’s t rigger port set t ings.
Figure 78
Net work Set t ing > NAT > Port Triggering
The following t able describes t he labels in t his screen.
Table 55
Net work Set t ing > NAT > Port Triggering
LABEL
DESCRIPTION
Add new rule
Click t his t o creat e a new r ule.
#
This is t he index num ber of t he ent ry.
St at us
This field displays w het her t he port t riggering rule is act ive or not . A yellow bulb signifies
t hat t his rule is act ive. A gray bulb signifies t hat t his rule is not act ive.
Service Nam e
This field displays t he nam e of t he service used by t his rule.
WAN I nt er face
This field show s t he WAN int erface t hrough which t he service is forwarded.
Trigger St art
Port
The t rigger port is a port ( or a range of port s) t hat causes ( or t riggers) t he Device t o record
t he I P address of t he LAN com put er t hat sent t he t raffic t o a server on t he WAN.
This is t he fir st por t num ber t hat ident ifies a service.
Trigger End
Port
This is t he last port num ber t hat ident ifies a service.
Trigger Prot o.
This is t he t rigger t ransport layer pr ot ocol.
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 ...