Sonic Wall VPN thru AEBS

Hi,
I cant connect to work via Sonic Wall VPN using AEBS as router. Right now my AEBS is only used for connecting AirDisks and Internet is via my old Linksys router. Using Linksys for VPN is no problem. Tried Apple support but it's like hitting a brick wall. They do not support VPN they say...??
Arghh..I'm not looking for VPN support but a solution to a faulty Router device.
Does anyone have an idea of what to do?