Linux Server Security Hardening

Maintain user accounts and password policy.

Linux server security hardening.

For greater linux server security hardening it s recommended that you use integrity checking software before you take a system into a production environment online. Disable root console access. Here are 23 security tips to guide you through hardening your linux operating system. Hardening your linux server can be done in 15 steps.

Linux server hardening security tips and checklist. The following instructions assume that you are using centos rhel or ubuntu debian based linux distribution. If you are using a cloud server then your neighbor systems might not be as friendly as the ones in your own home network. Linux hardening security tips for professionals.

Linux hardening tools are typically used for configuration audit and system hardening. Keep kernel and packages up to date. Secure bios and disable usb booting. Linux security from the inside internal hardening generally lends itself to applications where users are allowed to execute programs within the system such as a shared hosting environment.

Disabling selinux means removing security mechanism from the system. To improve the security level of a system we take different types of measures. Encrypt data communication for linux server. Enable and configure firewall.

You should install aide software before connecting the system to a network if possible. Read more in the article below which was originally published here on networkworld. Avoid legacy communication services. Patch third party applications.

Think twice carefully before removing if your system is attached to internet and accessed by the public then think some more on it. Don t fall for this assumption and open yourself up to a potentially costly security breach. When hardening a linux system one of the first steps is to look at the network traffic that comes in and goes out. So it is wise to filter out unwanted network traffic or better only allow wanted traffic.

Most people assume that linux is already secure and that s a false assumption. There are many aspects to linux security including linux system hardening auditing and compliance. Users for these tools include auditors security professionals system administrators. Disable remote root access.

All data transmitted over a network is open to monitoring. This could be the removal of an existing system service or uninstall some software components. Encrypt transmitted data whenever possible with password or using keys certificates.