Open Door Networks' DoorStop firewall enhances the security of any Internet-connected Macintosh. DoorStop is software that runs on the Mac it's protecting, placing the security as close as possible to the services being secured and greatly simplifying administration. DoorStop is essential for today's permanently connected ADSL or cable-modem based Macs, for any Internet-connected Mac running Mac OS 9, and for any Macintosh Internet server.

DoorStop is available in two editions:

• DoorStop Personal Edition is specifically designed for end-user machines, especially those on intranets or full-time connections such as cable modems and ADSL. Personal Edition has also been designed to protect Mac OS 9's new Internet features, with unparalleled ease of use. It also runs back to Mac OS 8.1.
• DoorStop Server Edition has been specifically designed for servers, such as AppleShare IP, ShareWay IP Pro, and WebSTAR.

This User's Guide provides details of the Personal Edition of DoorStop. A separate User's Guide is available for the Server Edition.

What's New in DoorStop Personal Edition 2.0

• Access History Window - Real-time visual display of DoorStop activity, with detailed information available for each access.
• Learn More - Automatically link to a Web site to learn more about particular accesses.
• Control Strip - DoorStop's Control Strip module provides a visible indicator of DoorStop's status, the ability to start and stop DoorStop protection, and more.
• Temporary disable - Temporarily disable DoorStop protection for more convenient access to FTP servers
• Self-test - Confirm that DoorStop is operating.
• UDP Protection - Advanced users can protect UDP as well as TCP services.

Table of Contents

Getting Started	System Requirements Installation & Quick Start Purchasing DoorStop Personal Edition
DoorStop Basics	Key Concepts Using DoorStop with File Sharing Using DoorStop with Program Linking Using DoorStop with Web Sharing Using DoorStop with Other Services
Using DoorStop - Basic Mode	The Setup Window Changing Access to a Service Adding an Address to a Service's Address List Changing/Deleting an Address in a Service's Address List The Access History Window Logging Notification Self-test Serial Numbers Control Strip What Clients Will See Online Help Mac OS 9 and Multiple Users
Using DoorStop - Advanced Mode	The Setup Window The Access History Window Creating a New Service Entry Editing & Deleting User-defined Service Entries Working with Subnets Self-test UDP Protection
Troubleshooting	Common Problems & Their Solutions
Appendixes	TCP Port Numbers UDP Port Numbers Log File Format Sample Log Lines How to Read the Log File DoorStop and LogDoor 2.2 DoorStop Interaction with Other Applications