Configure Fail2Ban for Zimbra Server with route instead of iptables to block IPs

Overview Install and configure Fail2Ban to block attacking hosts using a null route or blackhole routes. PRO: – Works on all kernel versions and as no compatibility problems (back to debian lenny and WAY further). – It’s FAST for very large numbers of blocked ips. – It’s FAST because it Blocks traffic before it enters […]

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