Linux and VPN Products
Now that you know most everything you need to in order to understand VPNs, it's time to take a look at different Linux VPN products and what issues need to be addressed when using VPNs in concert with firewalls. It should be noted that IPSec support is now available with the Linux 2.6 kernel series as well.
Let's start by looking at some VPN systems available for Linux and discussing their merits. This is by no means an exhaustive list, but it does provide a good place to start.
Openswan
Openswan is an open-source implementation of VPN software that works very well with Linux. Openswan is included with many Linux distributions, including SUSE, Debian, and Red Hat. Openswan currently has two main development branches: the ...
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