ZyXEL Communications ZyWALL USG 1000 User Manual page 872

Chapter 56 Troubleshooting
the default routing and SNAT behavior for an interface with the Interface Type
set to Internal or External.
The ZyWALL is not applying a policy route's port triggering settings.
You also need to create a firewall rule to allow an incoming service.
I cannot get Dynamic DNS to work.
• You must have a public WAN IP address to use Dynamic DNS.
• Make sure you recorded your DDNS account's user name, password, and
domain name and have entered them properly in the ZyWALL.
• You may need to configure the DDNS entry's IP Address setting to Auto if the
interface has a dynamic IP address or there are one or more NAT routers
between the ZyWALL and the DDNS server.
• The ZyWALL may not determine the proper IP address if there is an HTTP proxy
server between the ZyWALL and the DDNS server.
I cannot create a second HTTP redirect rule for an incoming interface.
You can configure up to one HTTP redirect rule for each (incoming) interface.
I cannot get the application patrol to manage SIP traffic.
Make sure you have the SIP ALG enabled.
I cannot get the application patrol to manage H.323 traffic.
Make sure you have the H.323 ALG enabled.
I cannot get the application patrol to manage FTP traffic.
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ZyWALL USG 1000 User's Guide