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DoorStop X Security Suite is an integrated, comprehensive approach to securing your Mac on the Internet. Learn. Protect. Understand.

Learn. The new electronic edition of "Internet Security for Your Mac" is accessible from all products in the Suite. Whether you read it section-by-section or look up information on specific services or access attempts as you encounter them, the book helps you to achieve an invaluable knowledge of Internet security concepts and issues. And the book's associated blog, ISFYM.COM, keeps you totally up to date with new issues as they develop.

Protect. Open Door's flagship DoorStop

What's New

Version 2.4:
  • A new version of the DoorStop X Firewall is available and required for Lion. Version 2.4 is a free upgrade for all DoorStop X Firewall 2.3 users.
  • No changes are being made to the Who's
  • There? Firewall Advisor or "Internet Security for Your Mac and iPhone". Their advice remains accurate, although incomplete in regards to Lion and iCloud.
  • The ISFYM blog and Twitter stream


Mac OS X 10.4.11 or later

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DoorStop X Security Suite User Discussion

4 4


Current Version (2.x)


Downloads 3,932
Version Downloads 942
License Demo
Date 20 Jul 2011
Platform OS X / PPC 32 / Intel 32
Price $79.00
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