Virtual private networks /
Scott, Charlie.
Wolfe, Paul.
Erwin, Mike,1969-
Beijing ; Sebastopol, CA : O'Reilly,
1999.
Previous ed.: 1998.
"Turning the Internet into your private network"--Cover.
Includes bibliographical references and index.
Internet.
Extranets (Computer networks)
Computer networks
Business enterprises
Telecommuting.