Question
Ubuntu 20.04 Set Up Alert Email for SSH Access
- Posted on June 7, 2022
- SecurityUbuntu 20.04
Asked by mpasquali
I was wondering whether any answers in the following link would be most beneficial for setting up alerts to email me when a user logs in via SSH to my Ubuntu 20.04 server.
https://askubuntu.com/questions/179889/how-do-i-set-up-an-email-alert-when-a-ssh-login-is-successful
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Hi there,
One of the most straightforward ways would be to put the following in /etc/profile:
if [ -n "$SSH_CLIENT" ]; then
TEXT="$(date): ssh login to ${USER}@$(hostname -f)"
TEXT="$TEXT from $(echo $SSH_CLIENT|awk '{print $1}')"
echo $TEXT|mail -s "ssh login" you@your.domain
fi
In case that you are not receiving the emails, you can follow the steps here on how to setup ssmtp with SMTP authentication:
https://www.digitalocean.com/community/questions/how-to-send-emails-from-a-bash-script-using-ssmtp
However this is not a bulletproof solution, what I would recommend is to follow the steps here on how to harden your OpenSSH service here:
https://www.digitalocean.com/community/tutorials/how-to-harden-openssh-on-ubuntu-18-04
Hope that this helps!
Best,
Bobby
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