There are 6 necessary steps to get a Cisco PIX up and running. The following gives a brief explanation and listing of these 6 commands. This is for PIX OS version 6.x. A Basic config for 7.x and higher is a little different and the name is not as catchy.
interface - Configures interface settings such as speed, duplex, up/down nameif - Assign a name and security level to your interfaces. ip address - Configures IP addresses on the interfaces nat - The nat command configures translation for a set of IP addresses to another IP address(es) or IP addresses global - The global command is used to define the address or range of addresses that the addresses defined by the nat command are translated into route - Defines static routes for the Pix.
1. interface: Use the following commands to configure the PIX interfaces