Linux Audit

Linux security and system management blog

Linux security blog

Linux Audit is one of few blogs available that fully dedicated to Linux security. The goal of the blog is to share high-quality articles to explain security concepts and how they apply to Linux systems.

Security topics

• Applying strict file permissions
• Secure the system by hardening systemd services
• Linux kernel features such as capabilities, cgroups, and namespaces
• Monitoring the system using the Linux Audit Framework
• Provide an overview of common Linux commands for system administration

Interested in a particular subject or want to look around? The glossary might be a great start.

Stay up-to-date and the RSS/Atom feed to your RSS reader (e.g. Thunderbird)!

Did you know?

Interesting one-liner

You can monitor memory usage by combining the watch and vmstat command

Linux has many commands

What is it? pslog shows open log files for a process

Why use it? diagnosing process issues, information gathering, troubleshooting

See the command page of pslog for more details how to use it, available options, and useful one-liners.

Learn more

Also 💙 the command-line or terminal? Have a look at the command-line tips. See the full list of commands covered at this blog.

Latest articles

Open source software releases

Looking for resources to track new releases of your favorite open source software and tools? This overview provides the options to stay up-to-date.

Linux RSS feeds

Looking for RSS feeds related to Linux or security? This overview contains blogs and websites that provide a RSS feed and cover Linux.

Rate limit HTTP clients with nginx

Nginx can be configured to rate limit HTTP requests based on the IP address of the client. Learn how to set it up and tune it to your needs.

uname: show basic system information

The uname command is a small utility on Linux systems to show system information. It is usually available by default and easy to use.

head: show first number of lines from a file

The head command is a small utility on Linux systems to show the first 10 or defined number of lines of a file or filter standard input.

Frequently Asked Questions

When it comes to Linux, there is so much to ask, like:

• How to see the TTL value of a DNS record
• How to see the active settings of a systemd unit
• How to disable the background color of run0

Multiple sections within this site cover the frequently asked questions for Linux and Linux security.

• Data processing
• Linux file systems
• Hardware
• Kernel
• Networking
• Package manager
• Processes
• SSH
• System administration
• Systemd

Recent changes

• Linux Audit » Website information
• Website information » Latest changes
• Linux resources » Linux RSS feeds
• Linux resources » Open source software releases
• Linux Audit » Do NOT use Linux hardening checklists for your servers
• Linux Audit » Linux Security Scanning for Dummies
• Authentication » Password Security with Linux /etc/shadow file
• Authentication » File Integrity of Password Files
• Linux Audit » What is the ‘toor’ user on FreeBSD?
• Authentication » Unused Linux Users: Delete or Keep Them?
• Linux Audit » Using encrypted documents with vim
• Authentication » Configure the minimum password length on Linux systems
• Authentication » Locking users after X failed login attempts with pam_tally2
• Linux Audit » How to find the OpenSSH version
• Authentication » Linux password security: hashing rounds
• Linux Audit Framework » Configuring and auditing Linux systems with Audit daemon
• What is ...? » What is a security audit?
• Linux Audit Framework » Linux audit log: dealing with audit.log file
• Linux Audit Framework » Linux Audit Framework: using aureport
• Linux Audit » How to solve Shellshock on Debian and Ubuntu
• Linux Audit » How to clear the ARP cache on Linux?
• Linux Audit Framework » Linux Audit Framework 101 – Basic Rules for Configuration
• Linux Audit Framework » Tuning auditd: high-performance Linux Auditing
• Linux Audit » How to see the file type?
• Linux Audit » Automatic Security Updates with DNF

Topics