We have a webserver behind an ASA 5520 which has a static NAT setup to forward TCP port 80 traffic through to the private address of the server on port 80 which is working fine.
We are having an issue with one site on the internet being unable to access the webserver properly, and we believe it is due to that particular ISP caching or interfering with port 80 traffic.
In order to test this theory and put in a workaround for this site, we'd like to be able to access this website from another port in additon to port 80 (say 81) without making any changes to the server itself.
Is it possible to have 2 external port numbers (80 and 81) both statically NATing to the same server and internal port?
We would rather keep it working on port 80 for simplicity for most users, but just give this problematic site a different URL using port 81.
Many thanks for your help.
Same result, unfortunately you can't port redirect to the same internal server and same port.
Here is the result:
ASA(config)# static (inside,outside) tcp 184.108.40.206 81 192.168.0.2 www netmask 255.255.255.255
ERROR: duplicate of existing static
TCP inside:192.168.0.2/80 to outside:220.127.116.11/80 netmask 255.255.255.255