VPN Tunneling Incompatibility with Other VPN Client Applications

Third-party vendor VPN client applications may be incompatible with VPN tunneling. lists known VPN client vendors and VPN tunneling's relative compatibility with those vendors' VPN client applications.

Vendor	Compatible?
Cisco	Yes
Nortel	Yes
NS Remote	Yes
Intel	Yes
Checkpoint	Yes

If you want to install VPN tunneling on a client featuring an incompatible VPN client application, you must uninstall the incompatible application before you install or launch VPN tunneling on the client.