EXFO FG-750 - Manual (Page 69)

Getting Started with Your Fiber Guardian
Fiber Guardian 55
Retrieving the IP Address of the Rear Ethernet Port (Host)
Retrieving the IP Address of the Rear Ethernet
Port (Host)
Before starting to work with the Web user interfaces or the provided REST
commands, you need to retrieve the IP address of the Ethernet port located
on the back panel of the unit.
You will need to:

Connect a portable computer to your unit via the Ethernet port located
on its front panel.

Enter the IP address of the front Ethernet port of the unit and provide it
in the connection settings on the computer.
The (static) IP address is 169.254.10.10.

Enter the appropriate user name when the Host Web UI prompts you.

The user name that you should enter is Admin.

The password is Admin.
The procedure below will guide you through the necessary steps.
I
MPORTANT
Keep the IP address of the rear Ethernet port to a safe location. You
will need it later for most of the operations on your unit.