Is protection available to prevent access across a tunnel ..

Archived from groups: comp.dcom.vpn (More info?)

Other than the ability to enforce applications such as a personal
firewall are running, does anyone know of any commercial VPN solutions
(IPSec or SSL) that have any ability to detect if a host with an active
VPN tunnel into a private network has been compromised or trojaned.
With the Split-tunneling configurations that are out there, is there
any that has the ability to prevent inbound connections while connected
to the VPN?

Thanks in advance.