Patent ID: 6898710

Claim:
A system for a secure legacy enclave in a Public Key Infrastructure (PKI) comprising: at least one legacy server, the at least one legacy server containing at least one legacy application; at least one client platform operatively connected to a network, the at least one client platform containing legacy client software employable by at least one user to access the at one legacy application; a directory operably connected to the network, the directory containing information on the at least one user, the directory further containing information on each at least one user designating whether each at least one user is authorized to access the at least one legacy server; and a Virtual Private Network (VPN) extranet gateway, the VPN extranet gateway operatively connected between the at least one legacy server and the network, the VPN extranet gateway requesting a signature certificate of the at least one user attempting access to the legacy application to authenticate the at least one user, the VPN extranet gateway querying the directory to confirm the at least one user is allowed access to the legacy server after authenticating the at least one user, the VPN extranet gateway establishing a connection between the legacy client software and the legacy application if the at least one user is allowed access to the legacy server.