Have you looked into using ipfilter port redirecting ?
It may depend on your configuration.
pass in quick from any to any port = 8080 keep state
pass out quick from any port = 8080 to any keep state
rdr <Interface> <hostname or IP> port 8080 -> <hostname or IP> port 8080 tcp
Edited by: Hodware on Mar 4, 2013 7:24 AM