Which of the following are common techniques for securing Nagios? (Select THREE correct answers)

Requiring authentication for CGI scripts ensures that only authorized users can access the Nagios web interface, preventing unauthorized viewing of monitoring data or administrative actions.

While chroot jails can enhance security, running Nagios in one is not a common or practical security technique due to its dependencies and interactions with the system.

Nagios Core does not have an 'enabletls' compile option for its daemon; TLS/SSL for the web interface is typically handled by the underlying web server (e.g., Apache, Nginx).

Running Nagios as a non-root user (e.g., nagios user) limits the potential damage if the daemon is compromised, as it would have restricted system privileges.

Disabling external commands reduces the attack surface by preventing Nagios from executing arbitrary scripts or binaries, which could be exploited if an attacker gains control over the external command pipe.