For additional protection your authorized_keys file can be setup to only settle for connections from specified IP addresses or hostnames. Environment that up is further than the scope of this manual, but more info within the SSH authorized_keys file are available at SSH Academy: Configuring authorized_keys for OpenSSH. A https://kelebihan-kelemahan-blogg90178.blogkoo.com/an-unbiased-view-of-createssh-47903440