Linux Security

When you choose Linux as your operating system, you receive legendary Linux security. Linux is a modular system which is more secure than other monolithic systems. Linux security is why nearly all of the top websites, as ranked by uptime, chose Linux over competitors' operating systems.

Even though Linux is an open source (visible) system, Linux security is not successfully attacked by outsiders at the rate of others' proprietary source (hidden) systems. Linux security is also effective because malware for Linux is generally ineffective, which reduces downtime and loss of productivity.

Linux security is modular, which means it separates users and limits their applications and access so that less damage can occur if there ever were a Linux safety breach. In competitors' monolithic systems, single users have extensive access to a variety of programs that administrators should only be accessing, so unqualified users are accessing restricted areas that can damage essential files. Thus, one way to improve your Linux security further is to display login banners and limit login attempts, locking out users who cannot provide verification.

Other operating systems have integrated so many resources into their operations that it becomes impossible to separate the programs and utilize them independently. By contrast, Linux's modular design allows multiple users to work simultaneously, which results in higher Linux safety. Since all the programs share common functions on a monolithic system, a security breach in one single application can affect all the other applications as well. System upgrades performed on monolithic systems can inadvertently affect multiple programs. Because Linux security does not rely on interdependent programs, threats to Linux security are not as severe as similar threats applied to a monolithic type system, and the modular architecture ensures seamless upgrades.

Linux security is effective because it does not rely upon remote procedural code (RPC), which allows outside computers to give commands to otherwise secure computers. Unlike other operating systems, Linux security is independent of RPC. Closing network ports and disabling Runlevel and Xinetd services can ensure even better Linux security by reducing unauthorized access.

The limitations inherent in this security assure that fewer users have access. This is why it is so important to require passwords at user logins, to require passwords to expire, and to encourage stronger passwords and limit the use of old passwords.

Finally, Linux security is also safer than other operating systems because of its lack of graphic interface at the server level.

Some tips to improve your Linux security are general common-sense ideas, such as reading your Linux manual detailing Linux security and hardening. Obviously, you would also want to create comprehensive policies for your network and system administrators that reflect your business ethics and address all system usage prohibitions and restrictions. Improve Linux security by removing any unnecessary software from your system and then installing your Linux CD, being sure to apply patches.

Linux security can be improved by creating your own Kernel how-to and applying it, as well as setting Kernel security limits. Streamline your system and maintain your Linux security by eliminating excess usage by turning off unnecessary daemons and hardening systems. Check access permissions to files and directories, and restrict or adjust as necessary.

As you expand servers, don't forget to update Linux security on all the servers you operate. Be sure to test your servers for any vulnerability and correct any ways that the server may be exploited. Constantly monitor the networks and servers that you are operating, and improve Linux security by backing up the servers and information on your networks to prevent catastrophic data loss.

An important measure to take is to always request notification at any Linux security breach so that you can immediately respond to the threat and prevent further losses. You should frequently review security logs to identify any breaches in the system. Investigate any breach in security to identify where the intruder exploited the vulnerability of the Linux security system so that you can immediately repair the problem.

By using common sense, updating, limiting access, and monitoring and auditing your Linux system, you ensure that your system remains secure and join other top webmasters who know the value of a secure Linux system.


Site Sponsors

Linux Articles

  • Linux Backup Software
    What is linux data recovery, when is it necessary, why is necessary, how does it work?
  • Linux Online Backup
    How does an online backup of a linux server work, where are the files stored, what are the benefits of an online backup vs a hard drive backup?
  • What is a Linux Server
    What is a linux server, how does it work, who uses them, why are they used?

More articles