We are NATing the outside source address of the serverA.
Our configuration:
ServerA (172.23.1.5/24)
RouterA (Eth0- 172.23.1.1/24, S0- 172.16.3.2/30)
RouterB (S0- 172.16.3.1/30, Eth0- 192.168.27.2/29)
Firewall
ServerB (198.203.239.66)
We can ping and traceroute from ServerA to ServerB but not the way around. NAT is happening on RouterB.
I enabled debug on both routers. When pinging from ServerB to ServerA I can see the correct translation and forwarding of packets,but on RouterA nothing happens.
Part of running-config on RouterA:
ip route 192.168.27.0 255.255.255.248 172.16.3.1
ip route 198.203.239.66 255.255.255.255 172.16.3.1
Part of running-config on RouterB:
interface FastEthernet0
ip address 192.168.27.2 255.255.255.248
ip nat inside
speed auto
!
interface Serial0
ip address 172.16.3.1 255.255.255.252
ip nat outside
encapsulation ppp
!
ip nat outside source static 172.23.1.5 192.168.27.13
ip classless
ip route 0.0.0.0 0.0.0.0 172.16.3.2
ip route 198.203.239.64 255.255.255.192 192.168.27.1
Am I missing anything ? Please help.
Thanks,
Henry