10 Steps to Secure Your Linux VPS Server
Many site owners with good traffic are now switching to VPS or virtual private server hosting, especially Linux VPS hosting. Although VPS is also available for Windows, Linux OS proves to be more resilient and high-performance driven, which enhances the server functions, and thus, the site experience. It is cost-effective and supports a wide range of applications and coding languages, so you can seamlessly manage your server resources. However, when you have such an efficient resource at your disposal, you also need to ensure its security.
Here are few handy ways to keep your Linux VPS secure.
- Change the default login.
When your hosting provider sets up the VPS server with Linux, it usually comes with a standard username and password. These default values are very easy for hackers to crack and violate your system. To ensure safety, we recommend that you change it right away. Also, when setting the new password, you should deny all permissions to any access using ‘root’.
- Keep a strong password.
Always set a complex value for a password that is not easy to crack. Also lock user accounts after repeated failed attempts, by running the ‘faillog’ command.
- Change the default SSH Port.
The default SSH port number is always set at 22. Since this is standard across all servers, hackers can easily break through it. So you also need to change this and safeguard the system from malicious scripts.
- Always use the updated version.
Software yields the best performance when you use the updated version. Always make sure to run updates whenever they are available. You can either set an automated update or do it manually.
- Run firewalls.
Firewalls work as an extra layer of security. One of the most secure and popular ones for Linux VPS is Netfilter, which can be added to its kernel. It’s easy to configure and run and keep your server protected.
- Always back up data.
Always run regular backups of your entire system. You can use automated programs to backup files and other assets. Opt for a hosting package that comes with automated daily backups.
- Disable unused ports.
Unused and open network ports are breeding grounds for hackers. Run the ‘netstat’ command to check which ports are open and close any unused ports and any related tasks running on those.
- Get rid of unwanted modules/packages.
Keeping your server clean is the key to its safety. There will always be some services that come as a default, but you never use them. Make sure to clean your system of these unwanted programs and run tasks that you actually need.
- Run GnuPG encryption
Hacking can also happen when your data is in transmission over the network. Hence, encryption. GnuPG is a popular encryption tool that uses a key-based authentication system to secure data while in transit. Only the intended recipient with a private key can access the same, thus saving your data from being intercepted.
- Use disk partitioning.
A classic but highly effective method, partitioning your disk keeps the OS free of user files, temporary files, and third-party programs, which could pose a risk to the OS. Also, disable SUID/SGID access and binary file execution on the OS.
Although Linux VPS is a highly secure environment, one can never be too safe. Along with opting for a reliable hosting service and the support of a reputed service provider, you should do your best to keep your server system secured and ensure the best performance out of it.