ip-blocking

BeeThink IP Blocker is a Windows IP Blocking program which controls one computer interacts with other computers over the network. It can be successfully used on Windows server machines, in a production environment, to easily ban unwanted IP addresses or visitors by country with...

Fail2ban scans log files (e.g. /var/log/apache/error_log) and bans IPs that show the malicious signs -- too many password failures, seeking for exploits, etc. Generally Fail2Ban is then used to update firewall rules to reject the IP addresses for a specified amount of time...

PeerGuardian is a privacy oriented firewall application. It blocks connections to and from hosts specified in huge blocklists (thousands or millions of IP ranges). Its origin seeds in targeting aggressive IPs while you use P2P.