Linux system hardening: adding hidepid to /proc

Hiding processes for other users The pseudo-filesystem /proc contains a lot of useful information for the system administrator. It also shares a lot to normal users on the system. We can change what can be seen by using the right mount options. When looking in /proc you will discover a lot of files and directories. A lot of these directories are just numbers and represent the information about a particular process ID (PID). By default, Linux systems are deployed to allow […]

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Most important steps for Linux server hardening

Linux Server Hardening 1. Install security patches Most systems weaknesses are caused by flaws in software. These flaws we call vulnerabilities. Proper care for software patch management help with reducing a lot of risks. The task of patching has often a low risk, especially when starting with the security patches first. Most Linux distributions have the option to limit what packages you want to upgrade (all, security only, per package). Make sure that your security updates are installed as soon […]

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