SSHGuard is described as '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' and is a Firewall in the network & admin category. There are more than 10 alternatives to SSHGuard for a variety of platforms, including Linux, Windows, Self-Hosted, Web-based and BSD apps. The best SSHGuard alternative is Fail2ban, which is both free and Open Source. Other great apps like SSHGuard are IPBanPro, reaction, Denyhosts and ConfigServer Firewall.