I have been successfully using a PPTP VPN connection to my 2830n via 3G using my iPhone. However when I am connected via my company WIFI I cannot connect to the 2830n. In the log I see the pptp connection starting but that`s it. Trying a PPTP VPN from a Win7 PC on that same WIFI works fine so I know the AP and router there are not causing the issue. I have encryption set to off on the iPhone and not required on the 2830n.

Any ideas?

TIA
Gary