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Chapter 14 ALG
USG20(W)-VPN Series User’s Guide
269
Peer-to-Peer Calls and the USG
The USG ALG can allow peer-to-peer VoIP calls for both H.323 and SIP. You must configure the
security policy and NAT (port forwarding) to allow incoming (peer-to-peer) calls from the WAN to a
private IP address on the LAN (or DMZ).
VoIP Calls from the WAN with Multiple Outgoing Calls
When you configure the security policy and NAT (port forwarding) to allow calls from the WAN to a
specific IP address on the LAN, you can also use policy routing to have H.323 (or SIP) calls from
other LAN or DMZ IP addresses go out through a different WAN IP address. The policy routing lets
the USG correctly forward the return traffic for the calls initiated from the LAN IP addresses.
For example, you configure the security policy and NAT to allow LAN IP address
A
to receive calls
from the Internet through WAN IP address
1
. You also use a policy route to have LAN IP address
A
make calls out through WAN IP address
1
. Configure another policy route to have H.323 (or SIP)
calls from LAN IP addresses
B
and
C
go out through WAN IP address
2
. Even though only LAN IP
address
A
can receive incoming calls from the Internet, LAN IP addresses
B
and
C
can still make
calls out to the Internet.
Figure 178
VoIP Calls from the WAN with Multiple Outgoing Calls
VoIP with Multiple WAN IP Addresses
With multiple WAN IP addresses on the USG, you can configure different security policy and NAT
(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 USG correctly forward the return traffic for the calls initiated from the LAN IP
addresses.
For example, you configure security policy and NAT rules to allow LAN IP address
A
to receive calls
through public WAN IP address
1
.
You configure different security policy 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
.
Содержание ZyWall USG20-VPN
Страница 17: ...17 PART I User s Guide ...
Страница 18: ...18 ...
Страница 99: ...99 PART II Technical Reference ...
Страница 100: ...100 ...
Страница 151: ...Chapter 9 Interfaces USG20 W VPN Series User s Guide 151 Configuration Network Interface Ethernet Edit External Type ...
Страница 152: ...Chapter 9 Interfaces USG20 W VPN Series User s Guide 152 Configuration Network Interface Ethernet Edit External Type ...
Страница 154: ...Chapter 9 Interfaces USG20 W VPN Series User s Guide 154 Configuration Network Interface Ethernet Edit Internal Type ...
Страница 155: ...Chapter 9 Interfaces USG20 W VPN Series User s Guide 155 Figure 121 Configuration Network Interface Ethernet Edit OPT ...
Страница 156: ...Chapter 9 Interfaces USG20 W VPN Series User s Guide 156 Configuration Network Interface Ethernet Edit OPT ...
Страница 170: ...Chapter 9 Interfaces USG20 W VPN Series User s Guide 170 Figure 127 Configuration Network Interface PPP Add ...
Страница 178: ...Chapter 9 Interfaces USG20 W VPN Series User s Guide 178 Figure 129 Configuration Network Interface Cellular Add Edit ...
Страница 194: ...Chapter 9 Interfaces USG20 W VPN Series User s Guide 194 Figure 139 Configuration Network Interface VLAN Add Edit ...
Страница 206: ...Chapter 9 Interfaces USG20 W VPN Series User s Guide 206 Figure 141 Configuration Network Interface Bridge Add Edit ...
Страница 282: ...Chapter 15 UPnP USG20 W VPN Series User s Guide 282 Figure 190 Network Connections My Network Places Properties Example ...
Страница 340: ...Chapter 21 IPSec VPN USG20 W VPN Series User s Guide 340 Figure 226 Configuration VPN IPSec VPN VPN Connection Edit IKE ...
Страница 348: ...Chapter 21 IPSec VPN USG20 W VPN Series User s Guide 348 Figure 228 Configuration VPN IPSec VPN VPN Gateway Add Edit ...
Страница 378: ...Chapter 22 SSL VPN USG20 W VPN Series User s Guide 378 Create a Web Application SSL Application Object ...
Страница 591: ...Chapter 31 Log and Report USG20 W VPN Series User s Guide 591 Figure 418 Configuration Log Report Email Daily Report ...
Страница 659: ...Appendix B Legal Information USG20 W VPN Series User s Guide 659 Environmental Product Declaration ...