Watchguard Firebox SOHO 6 User Manual page 187

I can't get a certain SOHO 6 feature to work with a DSL
modem.
Some DSL routers implement NAT firewalls. An external network
connection through an appliance that supplies NAT causes
problems with WebBlocker and the performance of IPSec. When a
SOHO 6 connects to the external network through a DSL router, set
the DSL router to operate as a bridge only.
How do I install and configure the SOHO 6 using a
Macintosh (or other) operating system?
The installation instructions for the Macintosh and other operating
systems are available from the WatchGuard Web site:
https://www.watchguard.com/support/sohoresources/soinstallhelp.asp
How do I know whether the cables are connected correctly
to my SOHO 6?
The front panel of the SOHO 6 has fourteen indicators. The WAN
indicator shows if the SOHO 6 is connected to the modem; if this
indicator is not lit, the SOHO 6 is not connected.
• Make sure that the cable is connected from the SOHO 6 to the
modem.
• Make sure the Internet connection is active.
The link indicators (0-3) are for the four Ethernet ports of the
trusted network. These indicators show if the SOHO 6 is connected
to a computer or hub. If the indicators are not lit, the SOHO 6 is not
connected to the computer or hub. Make sure that the cable is
connected and the computer or hub is connected to a power
supply.
User Guide
Troubleshooting Tips
165