VPN

I have PPTP up and running, but i can not ping all of the IP on my LAN subnet. I have a rule in pptp.

Proto     Source     Port     Destination     Port     Description
*              *              *              *                       *             pptp
*              pptp clients *           *                       *

I can ping .1 .2 & .20 of my lan, bit not .248
If i ssh into .2 i can ping anything on the network.

m0n0wall: 192.168.5.1
vpn if: 192.168.6.1


I also tried opening external ports to a remote desktop connection and that failed also.

Thanks for any help.