OPEN DOOR NETWORKS SHIPS WHO'S THERE? FIREWALL ADVISOR VERSION 1.5

Updated product works in concert with new DoorStop X firewall, Tiger

ASHLAND, OR. -- May 2, 2005 -- Open Door Networks Inc. today announced that it was shipping version 1.5 of its Who's There? Firewall Advisor. Who's There? enhances the Mac's security on the Internet by helping users analyze, investigate and respond to access attempts detected by their Mac's firewall. Who's There? 1.5 updates the product to work with Open Door's newly-announced DoorStop X firewall (see "Open Door Networks announces DoorStop X firewall") and the limited firewall built into Apple's new Tiger (Mac OS X 10.4) operating system.

Who's There? 1.5 works in concert with DoorStop X to supplement the capabilities of Open Door's new firewall, providing users with details and advice on access attempts logged by that firewall. It is also particularly important with Tiger's "built-in" firewall due to that firewall's severely limited logging capabilities (which include not logging access attempts allowed through to the Macintosh, showing denied access attempts only in cryptic form and periodically clearing all logging data).

Who's There? 1.5 also provides updated information and advice on access attempts to a number of additional services, including the rapidly growing number of Windows trojan horses. The product continues to support Norton Personal Firewall, Mac OS X Server, Brickhouse, and other Macintosh firewalls. It requires Mac OS 10.2.8 or later.

A free upgrade to Who's There? 1.5 is available to anyone who purchased version 1.2 or later of the product from Open Door. A full version of the product is $39. The upgrade, a free evaluation version of the product and additional details are available directly from the Who's There? Web site at http://www.opendoor.com/whosthere/ .

Open Door Networks, Inc. is a leading provider of Internet security solutions for the Macintosh. Open Door was founded in 1995 by Alan Oppenheimer, co-creator of the AppleTalk network system and co-author of the book "Internet Security for Your Macintosh: A Guide for the Rest of Us." Open Door's mission is to provide Macintosh users with Internet solutions that are as easy-to-use and as powerful as the Macintosh itself. Open Door Networks is based in Ashland, Oregon.

DoorStop and Who's There? Firewall Advisor are trademarks of Open Door Networks, Inc. Other trademarks are held by their respective owners.