Sshd
How to test the sshd configuration for configuration errors?
A healthy service should not have configuration issues. Perform a configuration test of the SSH daemon (sshd) by first running it using the '-t' option.
/etc/ssh/sshd_config
The configuration file /etc/ssh/sshd_config contains settings related to the OpenSSH server daemon. Learn more about this file its configuration.
SSH server configuration
Linux systems are usually managed remotely with SSH. Learn how to configure the SSH server daemon and improve its security.