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SSHGuardFail2ban
Free

Free to download; no paid edition is mentioned.

 Free

The open-source software is available without a license fee. Hosting, hardware and…

macOS, Linux, Command line Linux, Self-hosted, Command line
  • Works with many log sources, including the systemd journal
  • Supports iptables, ipfw and pf firewall backends
  • Cuts SSH and web brute-force noise dramatically with one jail enabled
  • Filters and actions are plain configuration files, easy to extend
  • Server-side daemon with no graphical interface
  • Only blocks attacks it has signatures for
  • Regex-based log parsing breaks when a service changes its log format
  • Only reacts after failures are logged; it is not a preventive control
Downloadable app Self-hosted
Closed source Open source
License not stated License: GPL-2.0
No account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.