SSHGuard protects hosts from brute-force attacks by monitoring system logs, detecting attacks, and blocking attackers using a firewall. It works by monitoring system log files and journal logs from various sources like cockpit, Common Log Format, macOS log, metalog, multilog, raw log files, syslog, syslog-ng, and systemd journal. SSHGuard's parser is fast, sandboxed, and secure, as it compiles attack signatures into a full lexical analyzer that does not slow down with more signatures, runs as a separate unprivileged process, and is not susceptible to regular expression denial of service attacks.
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Fail2ban is a daemon that scans log files and bans IPs showing malicious signs to protect servers from brute-force attacks.
DenyHosts is a script to block SSH server attacks by automatically preventing attackers after failed login attempts.
A low interaction Python honeypot designed to mimic various services and ports to attract attackers and log access attempts.
A Linux command-line tool that allows you to kill in-progress TCP connections based on a filter expression, useful for libnids-based applications that require a full TCP 3-way handshake for TCB creation.
Pure Python implementation of Microsoft RDP protocol with various tools and support for different security layers.
A network recon framework including tools for passive and active recon
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