Configure PIX interface by DHCP

Contributed by qmchenry September 18, 2003  
Tagged: Cisco firewall

In many situations such as remote sites connected by DSL or cable modem, the outside interface IP address of a firewall must support dynamic addressing by DHCP.

To configure the outside interface to obtain its settings by DHCP:

nameif ethernet0 outside security0
ip address outside dhcp setroute

The firewall will immediately try to receive an IP address and settings by DHCP.