OPEN DOOR NETWORKS SHIPS DOORSTOP PERSONAL FIREWALL 2.0

NEW RELEASE FEATURES DETAILED ACCESS ANALYSIS AND ADVICE

ASHLAND, OR. -- June 6, 2000 -- Open Door Networks Inc. today announced that it was shipping version 2.0 of its DoorStop Firewall, Personal Edition. This major new release of Open Door's personal firewall for Macintosh provides users with detailed information and advice about access attempts to their Macs while continuing to advance the ease of use for which the product is known. DoorStop 2.0 also provides advanced features such as a Control Strip module, self-test window and User Datagram Protocol (UDP) protection.

The DoorStop personal firewall helps users increase the security of their Internet-connected system by letting them block, either selectively or globally, access attempts to their machines from the Internet. DoorStop Personal is specifically designed for Macintosh users on cable modem, DSL and other full-time Internet connections. DoorStop Personal 2.0, a free upgrade for all users, goes beyond basic protection by helping users understand the day-to-day access attempts that are occurring with ever-increasing frequency.

"DoorStop users have been alarmed by the number of accesses that DoorStop was blocking and logging, even though many of those access attempts were harmless" said Alan Oppenheimer, president of Open Door Networks, Inc. "They asked us for help in figuring out which particular accesses they should really be worried about. With DoorStop 2.0 we help users better notice, analyze and react to those access attempts."

The key aspect of DoorStop 2.0's access analysis system is the Access History window and its associated "Learn More" Web site. The Access History window provides seven key pieces of information about every access attempt DoorStop logs: date/time, action (allow or deny), service and port the access attempt was to, access mode (UDP or TCP), and accessor host name and IP address. Any line in the window can be passed to the "Learn More" web site for further analysis. The "Learn More" web site is an expert system running at Open Door that analyzes the access and provides immediate, detailed, Mac-focused information and advice about the access attempt.

DoorStop Personal Edition 2.0 continues to run on PowerPC-based Macs back to Mac OS 8.1. In addition to the Access History window and "Learn More" Web site, DoorStop 2.0 new features include:

The DoorStop 2.0 upgrade is free to all registered DoorStop Personal users, from http://www.opendoor.com/doorstop/ . Free 10-day evaluation versions are also available at the site. DoorStop Personal Edition pricing ranges from $59 for single licenses, up through $1299 ($999 educational) for 50 user licenses. DoorStop Personal can also be purchased with Open Door's Internet file sharing software, ShareWay IP 3.0 Personal Edition, for $99 ($89 educational). Additional volume and site licenses are also available.

Open Door Networks, Inc. is a leading provider of Internet security solutions for the Macintosh, and the developer of Mac OS 9's TCP/IP File Sharing feature. Open Door was founded in January, 1995 by Alan Oppenheimer, an 11-year Apple veteran and co-creator of the AppleTalk network system. 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 ShareWay IP are trademarks of Open Door Networks, Inc.