Enable and configure firewall.
Linux server security hardening.
Disable remote root access.
Hardening your linux server can be done in 15 steps.
To improve the security level of a system we take different types of measures.
Encrypt transmitted data whenever possible with password or using keys certificates.
Most people assume that linux is already secure and that s a false assumption.
All data transmitted over a network is open to monitoring.
Keep kernel and packages up to date.
What is system hardening.
Linux hardening tools are typically used for configuration audit and system hardening.
Read more in the article below which was originally published here on networkworld.
Encrypt data communication for linux server.
Don t fall for this assumption and open yourself up to a potentially costly security breach.
Users for these tools include auditors security professionals system administrators.
There are many aspects to linux security including linux system hardening auditing and compliance.
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.
Avoid legacy communication services.
Patch third party applications.
Secure bios and disable usb booting.
When hardening a linux system one of the first steps is to look at the network traffic that comes in and goes out.
Linux hardening security tips for professionals.
Here are 23 security tips to guide you through hardening your linux operating system.
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.
You should install aide software before connecting the system to a network if possible.
So it is wise to filter out unwanted network traffic or better only allow wanted traffic.
If you are using a cloud server then your neighbor systems might not be as friendly as the ones in your own home network.
Disabling selinux means removing security mechanism from the system.
Maintain user accounts and password policy.
This could be the removal of an existing system service or uninstall some software components.
The following instructions assume that you are using centos rhel or ubuntu debian based linux distribution.
Think twice carefully before removing if your system is attached to internet and accessed by the public then think some more on it.
Security enhanced linux selinux is a compulsory access control security mechanism provided in the kernel.
