GB-750 Firewall Appliance Product Guide
20
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 B
OX
S
YSTEM
S
OFTWARE
U
SER
'
S
G
UIDE
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 first 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 firewall can be reset to factory
defaults, erasing all configuration data from the currently used memory parti-
tion and resetting the user name and password to
gnatbox/gnatbox
. The
configuration data can only be restored by loading a saved configuration with
known user name and password, or by manually entering the information.
To reset your firewall 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 flow control to “None” as an alternative to hardware flow control.
Power on the GTA Firewall. The following words will display:
GNAT Box System Software 3.4.0
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