Johna Till Johnson

Last week, columnist Johna Till Johnson broke down IP VPNs into three types: remote-access VPNs, branch-office VPNs, and extranet VPNs. The real news is the groundswell of interest from large companies in justifying deployment of branch-office VPNs, Johnson says.

Every few years the concept of IP virtual private networks gets a lot of press. Yet most large organizations continue to use a patchwork of frame relay, ATM and remote-access services to handle their connectivity needs. If IP VPNs are such a great idea, why haven