pearPortVPN allows you to automatically establish a specific VPN connection whenever a wireless network of choice becomes available. When Connected to Ethernet you can specify an IP-Range to establish a VPN connection automatically. Furthermore, pearPortVPN can automatically disconnect any open connections before your Mac falls aSleep and thus safe you from annoying error messages about timed out connections when your Mac wakes Up again.
Now works with Snow Leopard (32/64 bit Universal binary).