ACRIBA logdog is described as 'Comparable with fail2ban but based on Java and optimized for high performance. Log scans log files (e.g. /var/log/apache/access_log) and bans IPs that show the malicious signs -- too many password failures, seeking for exploits, etc' and is an app. There are 1 alternatives to ACRIBA logdog for Mac and Linux. The best ACRIBA logdog alternative is SSHGuard, which is both free and Open Source.
SSHGuard monitors services through their logging activity. It reacts to messages about dangerous activity by blocking the source address with the local firewall. SSHGuard employs a clever parser that can transparently recognize several logging formats at once (syslog, syslog-ng...
