i have a query about the static NAT command.
if the command static (outside,inside) is entered i believe this is a reverse of the static (inside, outside); in other words the source is changed to whatever is specified in the command.
on this basis the following commands would be incorrect for port forwarding;
static (inside,outside) 188.8.131.52 10.100.1.2 mask 255.255.255.255
static (outside,inside) 10.100.1.2 184.108.40.206 mask 255.255.255.255
i assume the above would cause an IP conflict as 10.100.1.2 would be both a host on the internal network and a NAT IP address present on the firewall.
this brings me to my question.... how can you NAT your outbound email out on one address; ie mail server internal address is 10.101.1.1 and should be NAT'ed out to 220.127.116.11, but have any inbound email to 18.104.22.168 forwarding to a different email server on 10.101.1.2?
i am not sure how to do this using static NAT commands on Cisco as it seems the static(inside,outside) command creates a one 2 one mapping only?