Fail2ban
- Using Fail2ban to Secure Your Server – A Tutorial | Linode
- How to Protect SSH with Fail2Ban on Ubuntu [Guide]; Rapid7
- How to install fail2ban on Ubuntu Server 18.04 – TechRepublic
- Secure a web server with Fail2ban on Ubuntu 18.04 – OSRadar
- How to use Fail2ban on Ubuntu 18.04 – LaymanClass
- Implement fail2ban with custom apache filter, ipset, and a sample based verification approach – jaytaala.com
- Using Fail2ban to Secure Your Server – A Tutorial | Linode
- Protect Apache Server w Fail2Ban, Ubuntu 14; DigitalOcean
- Block badbot with fail2ban via user agents in access.log – Ask Ubuntu
- Monitoring the fail2ban log
- Fail2ban Manual 0.8
- Fail2ban section of Dennis' note on nextcloud, nginx, docker