I dont think so that you can restrict packets coming through VPN Client. However, i didn’t get you point that for what purpose do you need the same????
I will recommend you to consult to <a href=”http://www.bestvpnservice.com”>best vpn service</a>. Or any review site they might help you with the same.
On some routers – Like SonicWalls – you can limit what / where a VPN user can access by setting up routing rules for their address objects
Basically, it lets them authenticate to the SonicWall, then you can tell the firewall to only allow that specific user – regardless of IP Address connected from – access to, say, a data or web server
Not played with ASAs/ISA’a much, but certainly they have similar functionality…