In article , navcole wrote: :I have a remote office with 2 people that make VPN connection back to :corporate office through a DSL line. The problem is that only one :person can make VPN connection at a time. As soon as the next person :try to connect, the first person got disconnected. I have IPSEC over :UDP configured on the concentrator at corporate. Please help.
You do not indicate what your VPN termination device is, nor what your VPN client is.
If you are using Cisco's VPN software client, and you are using recent (within last year or so) software versions of a PIX, VPN3000, or IOS router, as the termination point, then all you should need to do is enable isakmp nat-traversal on the termination point.
If your Netgear box at the remote office proves not to be able to cope with two different internal hosts using the same internal source port, then it needs to be replaced anyhow, even without VPNs.