Your ssh banner before login is set in /etc/ssh/sshd_config
, so in sshd_config you can set it to say
Furthermore, after succesful login, the ssh linux splash you see is usually configured via /etc/pam.d/sshd
In those two files, look for the line that says
session optional pam_motd.so
and comment it out:
# session optional pam_motd.so
then of course save, close, reload.
If you ask me, those banners are a complete waste of valuable screen-space (and time). First thing I kick out with a new openssh installation.