Server security is a broad term that encompasses the various measures taken to protect a server from malicious attacks and other security threats. These measures can include network security, application security, operating system security, and user authentication. Common security measures include firewalls, antivirus software, intrusion detection systems, and encryption. Additionally, server administrators should implement regular security patches and updates to ensure their server is up to date with the latest security protocols.

1. Implement Strong Passwords: Make sure that all passwords are strong and not easily guessed.

2. Enable Firewall: Enable a firewall for the server to protect against external attacks.

3. Update Software: Regularly update the server software to ensure that all security patches are applied.

4. Monitor Logs: Monitor all logs for suspicious activity and take appropriate action.

5. Restrict Access: Restrict access to the server to those who need it.

6. Limit Remote Access: Limit remote access to the server and use secure protocols such as VPNs.

7. Use Anti–Virus Software: Install anti–virus software on the server to protect against malicious software.

8. Back Up Data: Regularly back up all data to ensure that it is protected in the event of a breach.

9. Secure Network Connections: Secure all network connections with encryption.

10. Use Intrusion Detection Systems: Install an intrusion detection system to detect suspicious activity on the server.