VPN Connection on TCP 10000

I’ve got a problem with the VPN client in Mac OS X, now that apple finally made an update that would allow us to connect to a Cisco VPN server using a machine identification with a group name, they don’t allow to configure the connection specifics.
The problem is the following : the Cisco VPN servers I want to use are listening on TCP 10000 or UDP 10000 but Apple’s VPN client tries a connection on UDP 500, is there anyway I can change that somewhere ? I mean I only use VPN connection with Cisco servers that are on TCP/UDP 10000 so I don’t care if the change is complicated to make, I only want to do it once and for all.