Chapter 50 Troubleshooting

The ZyWALL’s firmware package cannot go through the ZyWALL when you enable the anti- virus Destroy compressed files that could not be decompressed option. The ZyWALL classifies the firmware package as not being able to be decompressed and deletes it.

You can upload the firmware package to the ZyWALL with the option enabled, so you only need to clear the Destroy compressed files that could not be decompressed option while you download the firmware package. See Section 28.3.1 on page 408 for more on the anti- virus Destroy compressed files that could not be decompressed option.

I changed the LAN IP address and can no longer access the Internet.

If you change the IP address of your LAN interface, make sure you also change the LAN_SUBNET address object.

50.1 Getting More Troubleshooting Help

Search for support information for your model at www.zyxel.com for more troubleshooting suggestions.

50.2 Resetting the ZyWALL

If you forget the administrator password(s) or cannot access the ZyWALL by any method, you can reset the ZyWALL to its factory-default settings. Any configuration files or shell scripts that you saved on the ZyWALL should still be available afterwards.

use the following procedure to reset the ZyWALL to its factory-default settings.

"This procedure removes the current configuration.

If you want to reboot the device without changing the current configuration, see Chapter 49 on page 649.

1Make sure the SYS LED is on and not blinking.

2Press the RESET button and hold it until the SYS LED begins to blink. (This usually takes about five seconds.)

3Release the RESET button, and wait for the ZyWALL to restart.

You should be able to access the ZyWALL using the default settings.

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ZyWALL USG 300 User’s Guide