Now we will look into each security control checklist:
- Determine the services running by checking the open network ports.
- Use a firewall such as iptables/nftables to limit access to the services as per need.
- Encrypt all data transmitted over the network.
- Avoid using services such as FTP, Telnet, and Rlogin/Rsh.
- Any unwanted services should be disabled.
- A centralized authentication service should be used.