Acronym for Virtual Private Dial-up Network.
A network that extends
remote access to a private network using a shared
infrastructure. VPDNs use Layer 2 tunnel technologies (L2F,
L2TP, and
PPTP) to
extend the Layer 2 and higher parts of the network connection from a remote user
across an ISP network to a private network. VPDNs
are a cost-effective method of establishing a long-distance, point-to-point
connection between remote dial users and a private network.