Virtual Private Networks
Another of the more advanced functions you can implement with Linux is a Virtual Private Network (VPN).VPNs are becoming a popular solution as security becomes more and more of an issue in information technology.
In this section we’ll look at a popular VPN solution for Linux and discuss one of the more popular commercial alternatives as well.
PoPToP
If you’re looking to set up a VPN over PPTP with Linux, one of the tools you should take a look at is PoPToP. PoPToP is a PPTP implementation for Linux, and there are ports available for Solaris, OpenBSD, and FreeBSD—which might be of interest if you happen to be working in an environment with those operating systems in addition to Linux.
Because many commercial environments ...
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