we have a BOVPN from our network 192.168.1.0/24 range to some hosted environments at a datacentre. 188.8.131.52/20
any machine on our internal network ranges can communicate with the systems at the data centre.
Users remotely are dialing in onto the internal network over VPN (PPTP) and are wanting to ping/communicate with a hosted environment at the data center.
when a user dials in they are allocated a IP from the vpn range 192.168.1.140 - 160 and can access anything on the internal network but they can't ping / or communicate with the hosted systems.