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Linux Security Tips

Linux security tips, Tux on code

Keeping your Linux system safe should always remain a top priority. Ensuring that your data and personal information stays protected from those who will attempt to hack into your system is crucial. The following is a list of tips geared towards helping you secure your Linux machine.


Any data that you are transmitting over your network could be monitored. One of the most basic tips for protecting your Linux network is to encrypt as much of your transmitted information as possible. By using various encryption certificates and keys, you can safeguard the information you send through your Linux computer.

Keep software additions to a minimum

Consider any extra software that you download very carefully. Is it truly necessary to have a bevy of web browsers installed? When you install software that is unnecessary, you increase your system’s overall vulnerability.

By using a RPM or DEB package manager, you can keep your system safe and provide yourself with the correct software packages. This allows you to delete any that are superfluous.

Update your software

Linux update manager

Proper Linux system maintenance involves the proper application of security patches. Linux is able to deliver the tools that you need to keep your system up to date and any recommended updates should be applied as soon as possible, following a review. The updates are typically suggested automatically, which takes a great deal of guesswork out of the equation.

Maintain strong passwords

Linux password manager

One of the most common reasons for a security breach on your Linux machine is a failure to construct a strong enough password. Gone are the days of choosing a simple phrase with 8 letters or the birthday of someone you are close to. Changing your password on a regular basis can help to combat this issue.

Other ways to avoid password related breaches are to restrict the usage of passwords that you have already used for other purposes and to allow Linux to lock your account after a repeated password failure.

Disable daemons

Linux daemons

Daemons end up running in the background and are often an unwanted pest to Linux users. Disable these services and locate your listening network ports in order to get rid of these harmful daemons. By closing ports that have opened and stopping your unwanted network services, you can keep your Linux system safe.

Separation of system files

Linux partitions

By separating your disk partitions, you are able to increase your Linux security. /usr, /home, /tmp, /var and /var/tmp should each be mounted onto a different partition.

When it comes to FTP server routes and Apache, separate partitions must be created. Adding the noexec, no dev, and nosuid options for configuration is your best bet.

Logging and auditing

Linux logs

Without the correct configuration of your auditing and logging, you are far more vulnerable to the attacks of hackers. Configuring your logs and audits lets you know exactly when an attempted attack took place and who is to blame. Failure to properly configure logging and auditing software is one of the most common reasons why a Linux system becomes vulnerable.

Quality intrusion detection system

Network intrusion detection systems, which are also known as NIDS, are an invaluable tool when it comes to keeping your Linux system safe and sound. Malicious activities include the scanning of your ports, denial of services and NIDS are also able to detect when a hacker attempts to crack into your computer through the monitoring of network traffic.

Before your system connects to a network of any kind, it is best to install NIDS software to keep your computer fully protected.

Do you have any other Linux security tips? Share them in comments below.