I'm seeing a lot of traffic going to my Exchange 2003 server from client machines on TCP port 1499. (The reason they are traversing the firewall is because the clients are at remote site connected via site-to-site VPN.)
It doesn't appear in the standard list of Exchange ports.
We are using Riverbed to compress traffic between the sites - but this isn't a Riverbed port either - I'm seeing some port 7830 (Riverbed MAPI) traffic but nothing is in their documentation for this port.
We also use RPC/https - but this isn't relevant as far as I know, as I assume this is just using 443.
Anybody know what port 1499 is? (Have googled it, but it comes back as Federico Heinz Consultora - no idea what that is!)