Port Translation

Port translation is fairly bullet proof. I'd guess the issue is not with the port translation, but with the application's references to itself within the HTTP.

Here's something to start with to replace the domain in redirects. If this doesn't fix all of the issues, try using a browser plugin like HttpFox for Firefox or Fiddler for IE to check the web app response headers and/or payloads.

when HTTP_RESPONSE {

    Check if response is a redirect
   if {[HTTP::is_redirect]}{

       Replace the hostname in the Location header with the external FQDN
      HTTP::header replace Location "[string map -nocase [URI::host [HTTP::header Location]] test1.phly.net" [HTTP::header Location]]
   }
}

Aaron