Currently I have a Citrix Presentation Server 4.5 being published to the web through an ISA 2004 Server. So when users go to http://external.domain.com, they are able to click on the application and it opens a tunnel over ports 1494 and 2598 to the server and everything works great.
I am having a problem with one client who is using a Squid Proxy Server for all their clients to get internet access. There is no routable gateway specified on any of the workstations, only the proxy server.
I have searched all over the internet, but nothing seems to be pointing me in the right direction. Any help would be great.