CyberGuard SG300 User Manual page 287

Wait for the recovery procedure to complete and the CyberGuard SG unit to finish
reprogramming.
Note
It takes a few minutes for your CyberGuard SG to finish reprogramming. After it has
finished it reboots automatically with its old configuration intact. If it is uncontactable after
rebooting, hit the Reset/Erase button twice within 2 seconds to restore factory default
configuration, then follow the instructions in the chapter entitled Getting Started to begin
reconfiguration of your unit.
Recovery using a BOOTP server
The following is a brief guide to performing a recovery boot when you are unable to
access either Netflash or a Windows PC on which to run it. More comprehensive
instructions are not given, as they vary depending on your operating system and server
software packages.
The recovery procedure involves network booting the unit using a BOOTP server with
access to a CyberGuard SG firmware image file, then upgrading the network as per a
normal flash upgrade to reprogram its flash to a usable state.
Note
To perform the recovery boot, you must have a firmware image for your CyberGuard SG
unit. The firmware that shipped with your unit is located in the \firmware directory on the
SG CD. The latest firmware for your SG unit can be obtained from SG customer support
Firmware files have the format Model_Version_Date.sgu or Model_Version_Date_*.sgu.
Log in to your PC with sufficient permissions to edit the server configuration files, and
stop and start the servers.
Place the firmware file in your BOOTP server's path, e.g.: /tftpboot/
Edit your BOOTP server configuration to contain an entry for the CyberGuard SG unit.
Specify the firmware file as the file to boot, e.g.:
filename "SG300_v2.1.3_20041213.sgu";
283
Appendix D – Recovering From a Failed Upgrade