* Windows-based anti-virus server needs to be allowed access to download
updates, but it is not normally logged in
* All other computers must be logged in
I'm thinking here that I can only do this by configuring proxy settings
on all the workstations and adding an IP filter for outgoing http
traffic from the server's IP address, but I'd prefer to use the
transparent proxy if possible. I've tried adding the server's IP to the
transparent proxy exceptions but it seems to have no effect.