The TOSS 5 SSH daemon must display the date and time of the last successful account logon upon an SSH logon.

Providing users feedback on when account accesses last occurred facilitates user recognition and reporting of unauthorized account use.

Verify the SSH daemon provides users with feedback on when account accesses last occurred using the following command:

$ sudo /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iH '^\s*printlastlog'

PrintLastLog yes

If the "PrintLastLog" keyword is set to "no", the returned line is commented out, or no output is returned, this is a finding.

Configure the SSH daemon to provide users with feedback on when account accesses last occurred.

Add the following line in "/etc/ssh/sshd_config" or uncomment the line and set the value to "yes":

PrintLastLog yes

Restart the SSH service for changes to take effect:

$ sudo systemctl restart sshd.service