What are the steps when securing a Linux server?

  1. Install and configure a firewall: Install and configure a firewall to protect the server from external threats.

  2. Harden SSH: Harden the SSH protocol by disabling root login and changing the default port.

  3. Install and configure an intrusion detection system: Install and configure an intrusion detection system to monitor the server for malicious activities.

  4. Lock down services: Disable services that are not needed and remove any unnecessary accounts.

  5. Perform regular security scans: Perform regular security scans to check for vulnerabilities in the system.

  6. Patch and update: Ensure that the system is up-to-date with the latest security patches and updates.

  7. Monitor logs: Monitor log files for suspicious activity.

  8. Backup regularly: Perform regular backups of the system in case of an emergency.

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