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5.2.17 Ensure SSH warning banner is configured

Audit#

Run the following command: 

# sshd -T -C user=root -C host="$(hostname)" -C addr="$(grep $(hostname) /etc/hosts | awk '{print $1}')" | grep banner

Verify the output matches: 

banner /etc/issue.net

Remediation#

Edit the /etc/ssh/sshd_config file to set the parameter as follows: 

Banner /etc/issue.net