I have a NAT rule setup on the firewall our ASA 5510 that doesn't seem to be working all of a sudden, but all other rules are. When my external users try to access the internal app server by going to the web address or IP address it just times out. Internally everyone can get to the server either by IP or by name so I know the server is up and working. My external users can get to OWA and other app servers by web address or IP, but just not this one that is having a problem.
Externally, I cannot ping this one server by web address or IP, but I can successfully ping all other app servers. No configuration changes have been made on the firewall or on the server. I have already restarted the server and I am still not able to access it from outside the firewall.
Any help would be appreciated. Thanks!