https://github.com/fail2ban/fail2ban https://pipo.blog/articles/20210915-fail2ban-apache-dos https://panupong-simto.medium.com/%E0%B8%AD%E0%B8%A2%E0%B8%B9%E0%B9%88%E0%B8%94%E0%B8%B5%E0%B9%86%E0%B8%81%E0%B9%87%E0%B8%AD%E0%B8%A2%E0%B8%B2%E0%B8%81%E0%B9%80%E0%B8%82%E0%B8%B5%E0%B8%A2%E0%B8%99%E0%B9%80%E0%B8%A3%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%87-linux-iptables-%E0%B8%82%E0%B8%B6%E0%B9%89%E0%B8%99%E0%B8%A1%E0%B8%B2-d86e782d10d8 https://app.pentest-tools.com/ https://www.cyfence.com/article/how-to-set-up-a-content-security-policy-for-website/ nftables, ufw, Douane, and Anti-DDOS .