Chapter 18 ALG
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296
can receive incoming calls from the Internet, LAN IP addresses B and C can still
make calls out to the Internet.
Figure 187
VoIP Calls from the WAN with Multiple Outgoing Calls
VoIP with Multiple WAN IP Addresses
With multiple WAN IP addresses on the ZyWALL, you can configure different
firewall and virtual server (port forwarding) rules to allow incoming calls from
each WAN IP address to go to a specific IP address on the LAN (or DMZ). Use
policy routing to have the H.323 (or SIP) calls from each of those LAN or DMZ IP
addresses go out through the same WAN IP address that calls come in on. The
policy routing lets the ZyWALL correctly forward the return traffic for the calls
initiated from the LAN IP addresses.
For example, you configure firewall and virtual server rules to allow LAN IP
address A to receive calls through public WAN IP address 1. You configure
different firewall and port forwarding rules to allow LAN IP address B to receive
calls through public WAN IP address 2. You configure corresponding policy routes
to have calls from LAN IP address A go out through WAN IP address
1
and calls
from LAN IP address B go out through WAN IP address 2.
Figure 188
VoIP with Multiple WAN IP Addresses
Finding Out More
• See
for related information on these screens.
• See
for a tutorial showing how to use the ALG for peer-
to-peer H.323 traffic.
• See
Summary of Contents for ZyXEL ZyWALL USG-1000
Page 2: ......
Page 30: ...30 ...
Page 58: ...Chapter 3 Web Configurator ZyWALL USG 2000 User s Guide 58 ...
Page 84: ...Chapter 4 Wizard Setup ZyWALL USG 2000 User s Guide 84 ...
Page 136: ...Chapter 6 Tutorials ZyWALL USG 2000 User s Guide 136 ...
Page 166: ...Chapter 9 Signature Update ZyWALL USG 2000 User s Guide 166 ...
Page 168: ...168 ...
Page 234: ...Chapter 11 Trunks ZyWALL USG 2000 User s Guide 234 ...
Page 248: ...Chapter 12 Policy and Static Routes ZyWALL USG 2000 User s Guide 248 ...
Page 272: ...Chapter 15 DDNS ZyWALL USG 2000 User s Guide 272 ...
Page 287: ...Chapter 16 Virtual Servers ZyWALL USG 2000 User s Guide 287 ...
Page 288: ...Chapter 16 Virtual Servers ZyWALL USG 2000 User s Guide 288 ...
Page 307: ...307 PART III Firewall Firewall 309 ...
Page 308: ...308 ...
Page 326: ...Chapter 20 Firewall ZyWALL USG 2000 User s Guide 326 ...
Page 328: ...328 ...
Page 370: ...Chapter 21 IPSec VPN ZyWALL USG 2000 User s Guide 370 ...
Page 392: ...Chapter 23 SSL User Screens ZyWALL USG 2000 User s Guide 392 ...
Page 394: ...Chapter 24 SSL User Application Screens ZyWALL USG 2000 User s Guide 394 ...
Page 402: ...Chapter 25 SSL User File Sharing ZyWALL USG 2000 User s Guide 402 ...
Page 412: ...Chapter 27 L2TP VPN ZyWALL USG 2000 User s Guide 412 ...
Page 440: ...Chapter 28 L2TP VPN Example ZyWALL USG 2000 User s Guide 440 ...
Page 441: ...441 PART V Application Patrol Application Patrol 443 ...
Page 442: ...442 ...
Page 470: ...470 ...
Page 531: ...Chapter 32 ADP ZyWALL USG 2000 User s Guide 531 Figure 371 Profiles Protocol Anomaly ...
Page 540: ...Chapter 32 ADP ZyWALL USG 2000 User s Guide 540 ...
Page 566: ...Chapter 33 Content Filtering ZyWALL USG 2000 User s Guide 566 ...
Page 574: ...Chapter 34 Content Filter Reports ZyWALL USG 2000 User s Guide 574 ...
Page 593: ...593 PART VII Device HA Device HA 595 ...
Page 594: ...594 ...
Page 614: ...614 ...
Page 636: ...Chapter 38 Addresses ZyWALL USG 2000 User s Guide 636 ...
Page 660: ...Chapter 41 AAA Server ZyWALL USG 2000 User s Guide 660 ...
Page 686: ...Chapter 43 Certificates ZyWALL USG 2000 User s Guide 686 ...
Page 698: ...Chapter 45 SSL Application ZyWALL USG 2000 User s Guide 698 ...
Page 699: ...699 PART IX System System 701 ...
Page 700: ...700 ...
Page 750: ...750 ...
Page 776: ...Chapter 48 Logs ZyWALL USG 2000 User s Guide 776 ...
Page 794: ...Chapter 49 Reports ZyWALL USG 2000 User s Guide 794 ...
Page 796: ...Chapter 50 Diagnostics ZyWALL USG 2000 User s Guide 796 ...
Page 798: ...Chapter 51 Reboot ZyWALL USG 2000 User s Guide 798 ...
Page 812: ...Chapter 53 Product Specifications ZyWALL USG 2000 User s Guide 812 ...
Page 814: ...814 ...
Page 874: ...Appendix A Log Descriptions ZyWALL USG 2000 User s Guide 874 ...
Page 956: ...Appendix E Open Software Announcements ZyWALL USG 2000 User s Guide 956 ...
Page 960: ...Appendix F Legal Information ZyWALL USG 2000 User s Guide 960 ...