Fedora Linux

8.1. Prevent Unwanted Connections Most Fedora systems are connected to a TCP/IP network. You can guard against unwanted inbound connections to your system by using the built-in firewall. 8.1....

8.2. Using SELinux Security Enhanced Linux (SELinux) is installed and enabled by default in Fedora Core. SELinux controls what a program is and is not allowed to do, enforcing security policy through t...

8.3. Using Access Control Lists Unix/Linux permission modes are very simple; they don't cover all security needs. But, because they are simple, they are actually used, which is more than can be said fo...

8.4. Making Files Immutable Because the root user can override permissions, file permissions alone are not enough to ensure that a file will not be changed. But when a file is made immuta...

8.5. Using sudo to Delegate Privilege Sometimes it's useful to delegate superuser privilege to a Fedora user; however, giving him the superuser password gives him total cont...

8.6. Configuring PAM and consolehelper Fedora uses the Pluggable Authentication Module (PAM) system to handle user authentication and identity changes. As the name implies, PAM is modular...

8.7. Logging It's important to know what is going on on your system. Fedora provides a standardized, network-based logging system and tools to automatically monitor and trim logfiles. Understanding and...