Global Technology Associates SOFTWARE FIREWALL GBWA200501-01 - Manual (Page 48)

GB-Ware Firewall Product Guide 44
13. How do I revert to my previous configuration after a version upgrade?
The firewall’s Compact Flash or hard drive memory is in two sections
(“slices”); one contains the current software version plus any saved configu-
ration, the other contains the previous software version and configuration. A
new firewall’s two memory slices are identical.
When the firewall is upgraded to a new runtime, the upgrade process
automatically 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
14. How do I use the memory section feature for live configuration testing?
The memory section (“slice”) feature can be used to test a new firewall con-
figuration in production while preserving the current configuration in the other
memory slice. In the following example, memory slice 1 contains the current
configuration, and memory slice 2 is used for testing a configuration.
1. Save a copy of the test 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 GBAdmin to make advanced configu-
ration changes; the currently selected slice will load by default until
another is selected.
6. To revert to the last configuration, reboot the firewall using the con-
sole interface and select memory slice 1.
Note
For more Troubleshooting suggestions, see the GNAT Box System
Software User’s Guide and GTA's web site at www.gta.com.
16. When I try to boot from the GB-Ware installation CD to install the system, I
get the error message, “Mounting CD – failed: Input/output error.” What steps
can I take to locate the problem?
Use these troubleshooting steps: