GB-750 Firewall Appliance Product Guide
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Index 23
When the word “
loading
” appears, immediately press
<Control R>
. The system
will begin to load, and configuration and hardware data will appear on screen.
Finally, a confirmation question displays:
Are you sure you want to reset your GB-750 configuration?: (“yes”
or “no”)
To reset to factory defaults, type the word “
yes
” in
lower case
letters. Typing
any other key will reboot the system without resetting to defaults. There is no
time out, the reset confirmation question will remain until a key is pressed.
8. How do I revert to my previous configuration after a version upgrade?
The GB-750’s flash memory is in two sections; one contains the current
software version plus any saved configuration, the other contains the previous
software version and configuration. A new GB-750 has two identical slices.
When the GB-750 is upgraded to a new runtime, the upgrade process auto-
matically overwrites the memory slice not in use with the new software version
and the existing configuration, leaving the production firewall version and
configuration intact. When the firewall is rebooted, the updated memory slice
will load by default.
To select a memory slice other than the default, set up the console interface as
described in Troubleshooting question #7.
When the system boots up, the memory slice information will load. When the
word “
Default
” appears, immediately type the number of the slice you wish to
load.
1 GNAT Box slice 1
2 GNAT Box slice 2
Default: 1
9. How do I use the memory slice feature for live configuration testing?
The memory slice feature can be used to test a new firewall configuration in
production while preserving the current configuration in the opposite memory
slice. In the following example, memory slice 1 contains the production configu-
ration, and memory slice 2 is used for test a configuration.
1. Save a copy of the current configuration.
2. Reboot the firewall using the console interface.
3. Select and boot memory slice 2.
Caution
The test configuration will now be your active firewall.
4. Upload the configuration saved in step #1.
5. Switch to the Web interface or GAdmin to make advanced configura-
tion changes; the slice will load by default until another is selected.
6. To revert to the production configuration, reboot the firewall using the
console interface and select memory slice 1.
