Dynamic NAT Overload or PAT | Cisco

4 simple steps to configure PAT/ NAT Overloading in Cisco IOS

1. create list for local network
2. create pool of puchassd SINGLE IP
3. merge/attach both above to nat inside

4. set inside and outside interfaces

access-list 1 permit 192.168.1.0 0.0.0.255
ip nat pool pool1 1.1.1.50 1.1.1.50 netmask 255.0.0.0
ip nat inside source list 1 pool pool1 overload
int fa0/0
ip nat inside
int fa0/1
ip nat outside
show ip nat translation