Abstract
This document provides an overview of the Internet and security-related problems. It then provides an overview of firewall components and the general reasoning behind firewall usage. Several types of network access policies are described, as well as technical implementations of those policies. Lastly, the document contains pointers and references fo rmore detailed information.
The document is designed to assist users in understanding the nature of Internet-related security problems and what types of firewalls will solve or alleviate specific problems. Users can then use this document to assist in purchasing or planning a firewall.
