https://rfxn.com Open source Linux security and systems tools from R-fx Networks. en-us Wed, 25 Feb 2026 22:32:59 GMT https://rfxn.com/projects/linux-malware-detect https://rfxn.com/projects/linux-malware-detect A malware scanner for Linux designed around the threats faced in shared hosted environments. Uses threat data from network edge IPS, community resources, and ClamAV to detect actively exploited malware. https://rfxn.com/projects/advanced-policy-firewall https://rfxn.com/projects/advanced-policy-firewall An iptables(netfilter) based firewall system for Linux servers. Provides three-fold filtering with static rules, stateful connection tracking, and sanity-based packet inspection. https://rfxn.com/projects/brute-force-detection https://rfxn.com/projects/brute-force-detection A modular shell script for parsing application logs and detecting authentication failures. Uses regex rules and integrates with APF, Shorewall, or raw iptables for blocking. https://rfxn.com/projects/irsync-incremental-rsync https://rfxn.com/projects/irsync-incremental-rsync An incremental backup utility built on rsync with traffic control shaping, hard-link snapshots, point-in-time restore, and MySQL backup support. https://rfxn.com/projects/linux-environment-security https://rfxn.com/projects/linux-environment-security A security hardening tool that prevents environment-based attacks including PATH tainting, profile script hijacking, and system traversal exploitation. https://rfxn.com/projects/linux-socket-monitor https://rfxn.com/projects/linux-socket-monitor A port monitor that tracks changes to network sockets and Unix domain sockets using differential comparison, alerting on newly activated services. https://rfxn.com/projects/network-socket-inode-validation https://rfxn.com/projects/network-socket-inode-validation Validates network socket inodes at the kernel level, correlating processes to sockets to expose hidden or injected connections indicative of compromise. https://rfxn.com/projects/process-resource-monitor https://rfxn.com/projects/process-resource-monitor A CPU, memory, and process resource monitor for Linux and BSD. Supports global and per-process/per-user limits with automatic enforcement. https://rfxn.com/projects/system-integrity-monitor https://rfxn.com/projects/system-integrity-monitor A system and services monitor for SysVinit systems. Monitors services, load, disk space, and network status with auto-restart for downed services. https://rfxn.com/projects/system-priority https://rfxn.com/projects/system-priority A tool for managing system process priorities and CPU scheduling on Linux. Provides persistent, rule-based priority management via nice and scheduling subsystems.