You can have set SSH login welcome message on your systems,  need to add your message in MOTD (Message of The Day) file.

# vim /etc/motd

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Welcome to TheLInuxFAQ Server
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


Once added your welcome message save the file :wq!, then login into your server.
 
host@root:~$ ssh -p 22 root@192.168.0.120

root@192.168.0.210's password:
Last login: Fri Jul  3 15:05:24 2015 from 192.168.0.1
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Welcome to TheLInuxFAQ Server
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~