Implementing Cisco Network Security (IINS v3.0) (#50)

What is the most common implementation of PAT in a standard networked environment?

configuring an
any any
rule to enable external hosts to communicate inside the network.
configuring multiple internal hosts to communicate outside of the network using the outside interface IP address
configuring multiple internal hosts to communicate outside of the network by using the inside interface IP address
configuring multiple external hosts to join the self zone and to communicate with one another