Watchguard SOHO User Manual page 40

Configuring Your External Network
4 If "Obtain an IP Address Automatically" is selected, your
computer is configured for dynamic DHCP. If "Obtain an IP
Address Automatically" is not checked, your computer is
configured for static addressing.
Configuring the SOHO External network for
dynamic addressing
Out of the box, the SOHO is configured to obtain its external
address information automatically, using DHCP. If your ISP
supports this method, the SOHO will obtain all the necessary
address information when it powers on and attempts to connect to
the Internet. No further configuration of the SOHO is required. To
complete the SOHO External Network configuration, see "Release
and renew the IP configuration" on page 46.
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