10 Actionable SSH Hardening Tips to Secure Your Linux Server
You can set up UFW to only accept approved traffic, which is helpful if you’re looking to create a personalized configuration. If you’re concerned about remembering your Linux server passwords, you may find a password manager helpful. These can store your passwords securely, so you don’t need to write them down or leave reminders next to your computer. The Linux terminal is the primary tool for inputting commands and updating your Linux server manually. To do this, access the Linux server at a local repository and apply the most up-to-date patches. Linux’s Update Manager will search for the latest updates and automatically let you know when one is available.
This means, testing and installing any updates that are announced as security updates. If you want to achieve the maximum security of your Linux distribution, consider https://remotemode.net/ first how well the hardware is protected. Most of these related settings can be done in the BIOS, often accessible by pressing a key during the boot process.
Enforcing Stronger Passwords
This prevents just anyone from using that profile and making unauthorized changes to your server configuration. If remote access to your server via remote desktop protocol (RDP) is required, ensure you have the highest level of encryption enabled for this. linux hardening and security lessons User accounts are identities created to allow authenticated access to a server or related system. Different user accounts have different levels of access to core functions of the server, with administrator accounts having the highest level of access.
That’s why account management is an essential part of your server hardening checklist. Linux server hardening is the process of securing a Linux server by applying the latest security standard and configurations, as well as installing the necessary software. If you apply the right security measures, you can significantly reduce the chances of your Linux server ever getting compromised. Keeping your Linux operating system and installed software up to date is crucial in minimizing security vulnerabilities.
Bonus Tips
He is adept at designing and implementing robust security solutions to safeguard systems and data. Arun holds multiple industry certifications including CCNA, CCNA Security, RHCE, CEH, and AWS Security. To know more about him, you can visit his profile on LinkedIn. Hardening Ubuntu 20.04 is essential if you want to keep your business running smoothly. While Linux is inherently secure, there are still potential threats that can be mitigated through proper hardening techniques.
- This checklist has been created based on our knowledge and additional research.
- If you find an unnecessary service or server application listening for inbound connections, disable the port or remove the application.
- The latest servers’ motherboards have an internal web server where you can access them remotely.
- Most Linux distributions use the modular framework named PAM, which is short for pluggable authentication module.
- No matter how much you try, you’ll always see bad login attempts via SSH on your Linux server.
- Most people assume Linux is secure, and that’s a false assumption.