PfSense in the news or was it Vyatta
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Stumble on pfSense in this article
http://www.enterprisenetworkingplanet.com/nethub/article.php/3675986
To configure a VPN server for remote access the best bet is to go with pfSense, m0n0wall, or Shorewall. These are all truly open-source. Of course rolling your own setup with Linux or FreeBSD works too, but the nice GUI tools included with these products makes it much more enjoyable and quicker to configure.