Next Generation Open Source Firewall
Robust and flexible VPN network tunnelling
Intelligently block brute-force attacks by aggregating system logs
Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
HTTP proxy to block ads and customize webpages
Firewall log analyzer
Anti Spam SMTP Gateway
Web application firewall in C language uses libevent
A simple, portable port scanner
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Blocking and monitoring of network traffic based on geography.
One of the most advanced DNS Proxy and DNS Firewall in one product.
A powerful network security tool, easy, safe and totally free.
Simulating an IP packet traversing the Linux kernel.
Network Firewall Linux Kernel Module with Conflict Resolution Engine
Linux firewall distribution geared towards home and SOHO users.