Chapter 6 Maintenance
ZyWALL USG 20-2000 User’s Guide
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The default configuration files are:
•
system-default.conf:
This file contains all of the ZyWALL settings. If you apply this file, the
ZyWALL’s default IP address and password will be restored.
•
startup-config.conf:
This is the configuration file that the ZyWALL is currently using. All the
changes you have saved/applied in the Web Configurator or in CLI commands (when you use the
write command) are applied to this file.
•
lastgood.conf:
This is the most recently used (valid) configuration file that was saved when the
device last restarted. If you upload and apply a configuration file with an error, you can apply
lastgood.conf to return to a valid configuration.
6.4.1 What Can Go Wrong
• You cannot upload
system-default.conf
or
lastgood.conf
.
• During boot up, the ZyWALL first applies
start-up.conf
. If the application is successful, it will be
copied into
lastgood.conf
. If the application fails, the ZyWALL will try to apply
lastgood.conf
.
• If
lastgood.conf
.fails to apply, the ZyWALL will restore by using the
system-default.conf
file
so that the device can boot up normally.
6.5 How to Manage ZyWALL Firmware
Click
Maintenance > File Manager > Firmware Package
. Use this screen to check current
firmware version and upload firmware to the ZyWALL.
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