OPEN DOOR NETWORKS SHIPS WHO’S THERE? FIREWALL ADVISOR FOR MAC OS X VERSION 1.2

ADDS SUPPORT FOR MAC OS X SERVER, BRICKHOUSE, OTHER POPULAR FIREWALLS

ASHLAND, OR. — June 17, 2002 — Open Door Networks Inc. today
announced that it was shipping version 1.2 of its Who’s There?
Firewall Advisor for Mac OS X. Who’s There? Firewall Advisor enhances
Macintosh Internet security by helping users analyze, investigate and
respond to access attempts to their Macintosh. Who’s There? 1.2, a
free upgrade for all registered Mac OS X users (there are no changes
for OS 9 users), provides support for the firewall built into Mac OS
X Server, the popular Brickhouse shareware firewall, and any other
firewall that uses Mac OS X’s built-in firewall and logging
capabilities.

Who’s There? Firewall Advisor for Mac OS X continues to also support
Symantec’s Norton Personal Firewall and any other firewall that uses
the Macintosh-standard “WebSTAR” log format. The free 1.2 upgrade,
a free evaluation version of the product itself and additional
details on the product are available directly from the Who’s There?
Web site at http://www.opendoor.com/whosthere/ . Who’s There? can
also be purchased from the site, in versions specific to both Mac OS
9 and X, each of which has significantly different security
characteristics.

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.

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| | Alan Oppenheimer
| | Open Door Networks, Inc.
|o | Internet solutions as easy to use as the Macintosh itself
| | alan@opendoor.com
| | http://www.opendoor.com
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