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.
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...
Fail2ban is the most popular Linux alternative to SSHGuard.
Fail2ban is the most popular Open Source & free alternative to SSHGuard.
IPBan is 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.
IPBanPro is the most popular Windows alternative to SSHGuard.
IPBanPro is the most popular commercial alternative to SSHGuard.
reaction is the most popular Self-Hosted alternative to SSHGuard.
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.
A Stateful Packet Inspection (SPI) firewall, Login/Intrusion Detection and Security application for Linux servers.
Server-based firewall. Reacts to attacks with intelligent abilities to detect malicious attempts to enter and reacting by blocking the IP temporarily. Repeated hits will ban the IP completely.
RdpGuard allows you to protect your Remote Desktop (RDP) from brute-force attacks by blocking attacker's IP address. Fail2Ban for Windows.
Sentry (Bruteforce attack blocker) is the most popular Mac alternative to SSHGuard.
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.
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.
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...) and on detection of malicious intent (repeated login failures, many failed RCPT commands...
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