We Don’t Like That Part, so we Turned it Off

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Presented at The GrrCON Cyber Security Summit and Hacker Conference 2024 by

William Fielder

Words that make many engineers wince: SELinux, iptables, firewalld, fapolicyd. Many a tutorial begins with telling the reader to turn them off. To that we say “bah!” This talk will shine a bright light upon the falsely perceived darkness of these valuable built-in RHEL security tools. We’ll discuss what they’re for, how they’re used, and how to make them work for you like a well provisioned army.