ZyXEL Communications ZYWALL USG 20 Manual page 728

Chapter 50 Troubleshooting
• If you've forgotten the ZyWALL's IP address, you can use the commands
through the console port to check it. Connect your computer to the CONSOLE
port using a console cable. Your computer should have a terminal emulation
communications program (such as HyperTerminal) set to VT100 terminal
emulation, no parity, 8 data bits, 1 stop bit, no flow control and 115200 bps port
speed.
I cannot access the Internet.
• Check the ZyWALL's connection to the Ethernet jack with Internet access. Make
sure the Internet gateway device (such as a DSL modem) is working properly.
• Check the WAN interface'sstatus in the Dashboard. Use the installation setup
wizard again and make sure that you enter the correct settings. Use the same
case as provided by your ISP.
The content filter category service is not working.
• Make sure your ZyWALL has the content filter category service registered and
that the license is not expired. Purchase a new license if the license is expired.
• Make sure your ZyWALL is connected to the Internet.
I configured security settings but the ZyWALL is not applying them for certain
interfaces.
Many security settings are usually applied to zones. Make sure you assign the
interfaces to the appropriate zones. When you create an interface, there is no
security applied on it until you assign it to a zone.
The ZyWALL is not applying the custom policy route I configured.
The ZyWALL checks the policy routes in the order that they are listed. So make
sure that your custom policy route comes before any other routes that the traffic
would also match.
The ZyWALL is not applying the custom firewall rule I configured.
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ZyWALL USG 20/20W User's Guide