WatchGuard Technologies WatchGuard SOHO and SOHO | tc - Manual (Page 26)

Configuring your public network
14
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. The actual wording on the
menu may differ depending on your operating system, but all
platforms differentiate somehow between dynamic and static
addressing.