I have setup a dedicated server at a datacenter which host files and requires some type of access to those files from multiple sites.
My simple solution was to allow VPN connections to the server and so I configured VPN using Microsoft Windows 2003 RRA.
It was a success and clients were able to connect to the server using VPN "dialer" which comes with Windows XP / Vista.
Up Until we realised that any clients who are behind the same IP can only connect once (1) at a time. If a second user attempts to connect from the same IP it gets stuck at verification. Some of these clients have up to 4 computers from the same IP which need to directly VPN to the server.
After doing some research, it seems that each client would need to buy expensive Cisco "VPN Concentrator" hardware to allow more then 1 VPN connections to the same server.
Is this correct? Or Is there any other way around this issue that's even simpler?