While setting up fail2ban while following the instructions more or less to the letter, I experienced the following issue. On using: ``` sudo fail2ban-client start ``` I receive the error: ``` fail2ban [5004]: ERROR No module named 'asynchat' ``` This was fixed using the advice found at the resolution of https://github.com/fail2ban/fail2ban/issues/3487: ``` wget https://launchpad.net/ubuntu/+source/fail2ban/1.1.0-1/+build/28291332/+files/fail2ban_1.1.0-1_all.deb sudo dpkg -i fail2ban_1.1.0-1_all.deb systemctl enable fail2ban service fail2ban start fail2ban-client status ``` My apologies for breaking any etiquette. I don't use Github often and figured this would be helpful for future users.