ZyXEL Communications ISG50-ISDN User Manual page 766

Chapter 61 Troubleshooting
• If you've forgotten the ISG50'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 ISG50'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's status 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.
I cannot use the web phone.
• You must use Internet Explorer to use the extension portal and web phone.
• Your computer must also have a microphone and speakers connected and enabled.
I configured security settings but the ISG50 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 ISG50 is not applying the custom policy route I configured.
The ISG50 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 ISG50 is not applying the custom firewall rule I configured.
The ISG50 checks the firewall rules in the order that they are listed. So make sure that your custom
firewall rule comes before any other rules that the traffic would also match.
I cannot enter the interface name I want.
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ISG50 User's Guide