Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

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Setting Up Firewalls and Proxy Servers in the Linux Environment

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This document is designed to describe the basics of firewall systems and give you some detail on setting up both a filtering and proxy firewall on a Linux based system.

The link for this article located at Firewall and Proxy Server HOWTO is no longer available.