NAT/PAT ROUTER_CISCO

 

Static Port Address Translation (Port Redirection)

Assume now that we have only one public IP address which is the one configured on the outside interface of our border router. We want traffic hitting our router’s public IP 20.20.20.1 on port 80 to be redirected to our internal Web Server at IP 192.168.1.10

interface FastEthernet0/0
ip address 20.20.20.1 255.255.255.0
ip nat outside
!
interface FastEthernet0/1
ip address 192.168.1.1 255.255.255.0
ip nat inside
!
ip nat inside source static tcp 192.168.1.10 80 20.20.20.1 80