There are several steps you can take to secure a Linux server:
Keep the operating system and software up to date: Make sure to regularly update your Linux distribution and all installed software to the latest version. This helps to fix known vulnerabilities and improve security.
Use a strong and unique password: Choose a strong and unique password for your Linux server, and use a password manager to store it securely. Avoid using easily guessable passwords such as “123456” or “password”.
Enable two-factor authentication: Two-factor authentication (2FA) adds an extra layer of security by requiring you to enter a second form of authentication in addition to your password. This can be a code sent to your phone via SMS, a notification from a security app, or a biometric factor such as a fingerprint or facial recognition.
Use a firewall: Install and configure a firewall on your Linux server to block unauthorized access and protect against network-based attacks.
Use antivirus software: Install antivirus software on your Linux server to protect against malware and other threats. Make sure to keep the antivirus software up to date to ensure it can detect the latest threats.
Enable secure remote access: If you need to access your Linux server remotely, use secure protocols such as SSH or VPN to establish a secure connection.
Implement security best practices: Follow best practices for securing your Linux server, such as using secure file transfer protocols, setting up a secure FTP server, and limiting access to your server to only trusted users.
Monitor your server: Regularly check your server logs for suspicious activity and monitor your system for any unusual behavior.