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:

- A Control Strip module that gives users an always-available indication of
DoorStop's status and provides immediate access to DoorStop's key
functions. - A self-test window that helps users make sure DoorStop is
active and configured as desired.
- Protection for the UDP as well as the TCP protocol. - Enhanced support
for FTP (File Transfer Protocol).

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.