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BACKGROUND
This Tutorial, based on the Kerio 2.1.5 firewall, is designed for the person who has very little or no experience in making a firewall rule set.
Users of other Firewalls may find this tutorial useful, for although Firewall interfaces are different, the principles of a rule set are similar.
The advantages of customizing your rule set rather than using the default rules will be readily seen once you understand the basics of a rule set: you will have complete control over everything that your firewall does.
Both a Win2000 and a WinXP computer with a dialup connection were used in the examples.
PRELIMINARIES
Before attempting to deal with constructing rules, a basic knowledge of networking terms is essential. It's similar to working with a recipe in a kitchen: you won't get very far if you don't know the basics of cooking. So, take some time now and learn about or refresh your knowledge of the following terms before getting started. You can begin with Kerio's Help File: Security Settings/Introduction to TCP/IP. Also, there are many technical encyclopedias and glossaries on the internet from which to choose. After familiarizing yourself with these terms, read the rest of Kerio's Help File so that you understand Kerio's features.
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