Virtual private networks (VPNs) are the technologies most widely used by organisations today in the provision of remote access to their networks for employees, business partners and suppliers. Of the VPNs available, IPSec (Internet Protocol Security) VPNs provide the most complete remote access solution, although they have traditionally been seen as costly and difficult to deploy. A new generation of IPSec VPNs, which can enable organisations to gain a centrally managed and high security remote access solution without the administrative burdens and overheads generally associated with IPSec VPN deployments, is now emerging.