Managing SELinux: A Comprehensive Guide to Mandatory Access Control on Linux
SELinux (Security-Enhanced Linux) is a Linux kernel security module that provides a mechanism for supporting access control security policies, including Mandatory Access Control (MAC). Unlike traditional Discretionary Access Control (DAC), where owners can grant or deny permissions, SELinux imposes system-wide policies that even root cannot byp ...
Posted on Sat, 16 May 2026 21:29:20 +0000 by garydt
Essential Linux System Tuning for Performance and Usability
Accelerate SSH Connections
To reduce SSH connection latency, adjust the server-side configuration in /etc/ssh/sshd_config. First, back up the original file:
cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak
Edit the configuration file and apply these changes:
Set GSSAPIAuthentication to no (typically around line 79).
Uncomment and set UseDNS t ...
Posted on Fri, 08 May 2026 04:23:42 +0000 by inferium