Adding malicious IPs in DNSBLs to iptables automatically
[This is an updated version of Adding malicious IPs in DNSBLs to hosts.deny automatically which uses iptables instead of tcpwrappers, since tcpwrappers has been deprecated.] I run my own mail server, which means that there are hackers trying 24×7 to break into the server by connecting to my SMTP or IMAP server and trying to guess… Read More »