The program is Internet Connect in the Applications folder. The File menu has "New VPN Connection Window" which is where you enter all the info. The only trick is that if your network is run by Windows (boo hiss) you might have to enter a username that includes your domain: DOMAIN\USERNAME (e.g., MYDOMAIN\GNAT).
When your machine is set up to do PPTP VPNs, you have a new configuration pane. Go to System Preferences, and then Network. From the drop down list "Show" select PPTP. You may need to add DNS servers and domains to search if you can't find any of the machines on your VPN.
Then you can mount shared volumes, printers, and all that good stuff. From my limited experiments with O'Reilly's VPN, though, I can't browse servers, I have to specify the machine names when I connect.
Dead simple! Many thanks to Chris Stone, our Mac networking guru here at ORA, who gave me the step by step instructions I needed to make it work.
Nat Torkington is conference planner for the Open Source Convention, OSCON Europe, and other O'Reilly conferences. He was project manager for Perl 6, is on the board of The Perl Foundation, and is a frequent speaker on open source topics. He cowrote the bestselling Perl Cookbook.
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