BlockHosts is a script to record how many times a local system is attacked, based on configurable scanning of system logs for sshd or other services. When a particular IP address exceeds a configured number of failed login attempts, that IP address is blocked using hosts.allow files, or by using null-routing, or by using packet filtering. An email notification facility is also available. License: Public Domain Changes: An ipblock option replaces the old iptables/iproute options, with the additional ability to accept a full pathname for iptables/ip route commands. Blockfile IP addresses with time strings that Python fails to parse are now handled by changing the time of IP address access to now, instead of exiting.

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