Denyhosts Alternatives

    Denyhosts is described as 'The idea of denying access to SSH servers is nothing new and I was inspired by many other scripts that I discovered. However, none of them did things the way I envisioned them to. Also, they were all shell scripts which do not offer the elegance of Python' and is an app in the Network & Admin category. There are more than 10 alternatives to Denyhosts for a variety of platforms, including Linux, Windows, Self-Hosted solutions, Mac and Online / Web-based. The best alternative is Fail2ban, which is both free and Open Source. Other great apps like Denyhosts are CrowdSec (Free, Open Source), SSHGuard (Free, Open Source), IPBan (Free, Open Source) and Cyberarms Intrusion Detection and Defense System (IDDS) (Free, Open Source).

    This page was last updated May 17, 2021

      • FreeOpen Source
      • Linux
      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.
      • FreeOpen Source
      • Linux
      • Self-Hosted
      CrowdSec is a security automation engine, using both local IP behavior detection & our community-driven IP reputation database.
      No screenshots yet


    1. SSHGuard monitors services through their logging activity. It reacts to messages about dangerous activity by blocking the source address with the local firewall.
      No screenshots yet
    2. A FREE and open source application that allows auto banning ip addresses from failed login attempts. Many sources are watched such as SSH, SMTP, SQL-Server, MySQL, RDP and dropped packets.
      No screenshots yet
    3. Windows Server brute force protection for Remote Desktop (including NLA), FTP, SMTP, and much more.

      Discontinued

      Software has been set open-source and abandoned by the main developer. Seems a very good detector but fails to successfully stop attacks. When I have it set to block IPs after 5 failed attempts I shouldn't see multiple entries showing 300 attempts by the same IP addresses.



    4. RdpGuard allows you to protect your Remote Desktop (RDP) from brute-force attacks by blocking attacker's IP address. Fail2Ban for Windows.
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    5. Built to react fast in server farms environments (ISPs, HSPs, organisations...) Hookem-Banem is a log monitoring system which monitors logs being sent to a central server (syslog, file...
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      • FreeOpen Source
      • Linux
      • Self-Hosted
      Light-weight and extra-configurable peruser of systemd journal logs: ban IP, send immediate email, daily report… all based on a single JSON configuration file.
      No screenshots yet
    6. Your Microsoft Windows servers are probably under constant attack and you may not even know it! Chances are if your hosting remote desktop, or other services such as Microsoft exchange, FTP, HTTP, HTTP’s or SQL. Your server is likely getting bombarded with failed login attempts.
      No screenshots yet
      • FreeOpen Source
      • Linux
      IPQ BDB filtering is done by a user space netfilter daemon that issues verdicts after looking up the IP address in a Berkeley DB. The fuzzy blocking model, freely inspired by STOCKADE, is designed to block non-distributed dictionary attacks and mitigate spam.
      No screenshots yet
    Showing 10 of 16 alternatives