GB-750 Firewall Appliance Product Guide20
4 – Troubleshooting 21
5. Why do I get errors starting GBAdmin? Why is online help not displayed?
GBAdmin requires Microsoft Internet Explorer 5.x or later installed on your
workstation. Components from Internet Explorer are used to display the online
help information.
For more Troubleshooting suggestions, see the GNAT BOX SYSTEM SOFTWARE
USER'S GUIDE and GTA's website at www.gta.com.
6. Why can't I see or ping the Protected Network interface?
You may have the wrong cable for your connection.
• For a direct connection (GB-750 to host or router) you need a cross-
over cable.
• For a connection to a hub or switch you need a straight-through cable.
A yellow crossover cable and grey straight-through cable are included with
hardware appliances.
Note
Distinguish between crossover cables and straight-through cables by
comparing the connection ends. On a straight-through cable, the wire
order matches; on a crossover cable, the rst three of the four cables
are in reverse order.
7. I lost my user name and/or password. How can I log on to my firewall ?
If login information has been irretrievably lost, a rewall can be reset to factory
defaults, erasing all conguration data from the currently used memory parti-
tion and resetting the user name and password to gnatbox/gnatbox. The
conguration data can only be restored by loading a saved conguration with
known user name and password, or by manually entering the information.
To reset your rewall to factory defaults, attach either a terminal (using a serial
console cable), or a workstation with terminal emulation software (using a DB9
null modem cable). Enter these settings for the console connection:
Emulation VT 100
Port COM port used on the system.
Baud Rate 38400
Data 8
Parity None
Stop 1
Flow control Hardware*
* Set ow control to “None” as an alternative to hardware ow control.
Power on the GTA Firewall. The following words will display:
GNAT Box System Software 3.4.0
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