OPEN DOOR NETWORKS ENHANCES LEOPARD INTERNET SECURITY

Upgraded products help users learn about and protect new Mac OS network
features

ASHLAND, OR. -- November 5, 2007 -- Open Door Networks Inc. today announced
updates to its comprehensive line of Macintosh Internet security products.
The updates, available immediately, significantly enhance the security of
the networking features that Apple has added in its just-shipped Leopard
(Mac OS X 10.5) operating system. They also help users understand and react
to new and evolving security threats.

"Leopard provides a host of new Internet-based services," said Alan
Oppenheimer, president of Open Door Networks. "New features like Screen
Sharing and Back to My Mac are incredibly powerful but also serious
security risks. It's important that Mac users both understand these new
features and their ramifications, and have the tools to fully secure them.
That's where our products come in."

Each of Open Door's security products is being updated:

- The DoorStop X Firewall and Who's There? Firewall Advisor, both version
2.2, add support for Leopard and its new services, along with direct
integration with Open Door's new Internet security "Top 10" list.

- The eBook "Internet Security for Your Macintosh: A Guide for the Rest of
Us" discusses Leopard's many new Internet features, as well as issues with
new products like the iPhone and Apple TV. The eBook, its associated blog,
isfym.com, and its Top 10 list, are integrated into Open Door's other
security products. The eBook is also available as a standalone PDF.

- The DoorStop X Security Suite, version 2.2, includes all of the above
updated products. The Suite continues to represent the most comprehensive
approach to Macintosh Internet security available today. Free 30-day
evaluation versions of the updated products are available from Open Door's
Web site at http://www.opendoor.com. Upgrades for any product purchased
this year are free. Mac OS X 10.3.9 or later is
required, and 10.4.10 or later is recommended.

Pricing for the updated products remains:

DoorStop X Firewall: $49
Who's There? Firewall Advisor: $39
"Internet Security for Your Macintosh": $10
DoorStop X Security Suite: $79

Access to Open Door's Internet security blog and Top 10 list, both
integrated directly into the products, is also freely available to all at
http://www.isfym.com and http://www.isfym.com/top10/. The blog provides
up-to-date information on the latest Macintosh Internet security issues as
those issues develop and evolve, while the Top 10 list provides a simple
list of things users can do to better protect their Macs on the Internet.

Open Door Networks, a leading provider of Internet security solutions for
the Macintosh, shipped the first Macintosh firewall in 1998, and premiered
its flagship DoorStop X Security Suite in 2005. 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.