IPSEC.SYS

Used by the Firewall built into TCP/IP 4.1 and above. This driver adds IPSEC security to the Firewall. This driver is the protocol driver for controlling VPN between two or more systems. It starts the key exchange and negotiation of protocols to be used. It then manages the exchange using the agreed items. DEVICE=\MPTN\PROTOCOL\IPSEC.SYS