Though not a big technical feature, having the right welcome message in a Unix server would be very much helpful in case of multiple server usages.
To change the welcome message modify /etc/motd file with the custom message and add update_motd="NO" line in /etc/rc.conf.
To have a custom SSH terminal welcome message create /etc/banner file with the custom message and add Banner /etc/banner line in /etc/ssh/sshd_config.
