For just a few thousand dollars, it's now possible to pick up a commodity VPN-firewall appliance that supports a few dozen simultaneous VPN connections. Drop it into the network, set up the firewall, configure the remote client applications, and presto--you've got an instant secure Internet infrastructure that lets remote users get the security of a direct dial-up connection while piggybacking on any ISP's infrastructure.
The VPN's new clothes
IPSec-based VPNs work for supporting remote workers, and work well. But what good is security when it only covers a fraction of the whole enterprise network? Data mobility in today's businesses is about a lot more than telecommuting; companies see the Internet as a vital artery that brings in information from a whole universe of sources.
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