Chapter 2. Basic Hardening Guide
docs.fedoraproject.org › en-US › Fedora2.8. Services. 2.9. NTP. The US National Security Agency (NSA) has developed two guides for hardening a default installation of Red Hat Enterprise Linux 5. Many of the tips provided in these guides are also valid for installations of Fedora. This Basic Hardening Guide will cover portions of the NSA's Hardening Tips and will explain why ...