Open Door Networks has announced a set of upgrades for its DoorStop line of Internet security apps. At the center is DoorStop X Security Suite 2.3, which consists of an updated DoorStop X Firewall, Whoís There? Firewall Advisor, and the e-book Internet Security for Your Macintosh and iPhone. The suite has been expanded to include a Twitter stream, a series of bugfixes, and iPhone support in the integrated isfym.com blog.
