1. A system of establishing a secure link among multiple users on a single machine with a remote machine, comprising: a subsystem to filter traffic so that traffic from each user is separate, the subsystem comprising an Internet Key Exchange (IKE) module and a policy module, the IKE module adapted to provide User Mode negotiations in order to establish a secure link among users; wherein the subsystem generates and associates a Security Association (SA) with at least one filter corresponding to the user and the traffic and employs the SA to establish the secure link.