How to show a banner explaining terms of use for an SSH connection before login.

Posted: February 6, 2018. At: 8:33 AM. This was 3 weeks ago. Post ID: 11821
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It is very simple to show a banner to your users, that explains the terms of use for an SSH connection upon the user reaching a login prompt. Firstly, create a file named info in the /etc/ssh directory.

sudo touch /etc/ssh/info

Then put this in it.

***************************************************************************
NOTICE TO USERS
 
 
This computer system is the private property of its owner, whether
individual, corporate or government. It is for authorized use only.
Users (authorized or unauthorized) have no explicit or implicit
expectation of privacy.
 
Any or all uses of this system and all files on this system may be
intercepted, monitored, recorded, copied, audited, inspected, and
disclosed to your employer, to authorized site, government, and law
enforcement personnel, as well as authorized officials of government
agencies, both domestic and foreign.
 
By using this system, the user consents to such interception, monitoring,
recording, copying, auditing, inspection, and disclosure at the
discretion of such personnel or officials. Unauthorized or improper use
of this system may result in civil and criminal penalties and
administrative or disciplinary action, as appropriate. By continuing to
use this system you indicate your awareness of and consent to these terms
and conditions of use. LOG OFF IMMEDIATELY if you do not agree to the
conditions stated in this warning.
 
****************************************************************************

And enable the SSH banner in the /etc/ssh/sshd_config file.

# no default banner path
Banner /etc/ssh/info

And then restart the SSH service.

sudo service ssh restart

Now the banner will be displayed to all users that are wishing to login to the SSH server.

jason@Yog-Sothoth:/etc/ssh$ ssh jason@localhost
***************************************************************************
NOTICE TO USERS
 
 
This computer system is the private property of its owner, whether
individual, corporate or government. It is for authorized use only.
Users (authorized or unauthorized) have no explicit or implicit
expectation of privacy.
 
Any or all uses of this system and all files on this system may be
intercepted, monitored, recorded, copied, audited, inspected, and
disclosed to your employer, to authorized site, government, and law
enforcement personnel, as well as authorized officials of government
agencies, both domestic and foreign.
 
By using this system, the user consents to such interception, monitoring,
recording, copying, auditing, inspection, and disclosure at the
discretion of such personnel or officials. Unauthorized or improper use
of this system may result in civil and criminal penalties and
administrative or disciplinary action, as appropriate. By continuing to
use this system you indicate your awareness of and consent to these terms
and conditions of use. LOG OFF IMMEDIATELY if you do not agree to the
conditions stated in this warning.
 
****************************************************************************

This is very easy to do and makes explaining the terms of use of your server.

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