Packet Filter

DNS Blacklist Packet Filter project is a Linux netfilter client that decides whether to accept or drop packets based on the results of a DNS blacklist query (such as MAPS, SORBS, or SPEWS, to name a few). One use is to filter all incoming SMTP SYN packets for spam filtering..

The fairly fast packet filter (FFPF) is an approach to network packet processing that adds many new features to existing filtering solutions like BPF. fairly fast packet filter is designed for high speed by pushing computationally intensive tasks to the kernel or even network processors and by...

ip-filter-cgi is a set of perl script to modify rules of IP Filter (IP Filter is a TCP/IP packet filter cf: http://coombs.anu.edu.au/~avalon/ip-filter.html). If you make any improvement, correction send it back to. The scripts is not complete and is provided for testing purpose....


Platforms: *nix

OpenBSD Live-CD Firewall is an OpenBSD-based pf (packet filter) firewall, with DNS, squid, NAT, and a DHCP server (dnsmasq) for internal clients preconfigured. Settings and log files can be saved to a USB device. Saved settings will be restored at the next reboot. Additional security related...


Platforms: *nix

pflogx is a simple tool that exports OpenBSD packet filter logs to XML files. pflogx reads a binary log file generated by the pf logging daemon (pflogd) and generates a human-readable and exploitable XML file. Using an XSLT processor you can convert this XML file to any other format, such as...


Platforms: *nix

fwlogwatch is a packet filter / firewall / IDS log analyzer written by Boris Wesslowski originally for RUS-CERT. fwlogwatch supports a lot of log formats and has many analysis options. It also features incident report and realtime response capabilities, an interactive web interface and...


Platforms: *nix

IPFIRE-wall is an IPv4 Packet Filter with Network Address Translation capabilities. It can be used in desktop systems and in simple network configurations, providing a friendly interface and a simple installation. Also unprivileged users can personalize. Whats New in This Release: Kernel:...


Platforms: *nix

Userfriendly Iptables Frontend provides a tool for generating optimized packet filter rules. The Userfriendly Iptables Frontend is used to generate optimized iptables packet filter rules, using a simple description file specified by the user. Generated rules are provided in iptables- save...


Platforms: *nix

nf-HiPAC is a full featured packet filter for Linux which demonstrates the power and flexibility of HiPAC. HiPAC is a novel framework for packet classification which uses an advanced algorithm to reduce the number of memory lookups per packet. nf-hipac package is ideal for environments involving...


Platforms: *nix

Frickin PPTP Proxy is a fast PPTP proxy for any BSD system with the OpenBSD packet filter installed. It handles bi-directional tunnels transparently and can be chained from one proxy to another over several servers. Whats New in This Release: - This release fixes an endian issue with echo...


Platforms: *nix

iN@tControl is a packet filter tool for TCP/IP Connections in a network. The client/server technology allows you to manage computers and their port filtering from the connection server computer. You can set specific filter rules and align them to individual computers. Can be used for - network...


Platforms: Windows

libnetfilter_queue is a userspace library providing an API to packets that have been queued by the kernel packet filter. libnetfilter_queue library is is part of a system that deprecates the old ip_queue / libipq mechanism. libnetfilter_queue has been previously known as libnfnetlink_queue..


Platforms: *nix

LFT (Layer Four Traceroute) is a sort of "traceroute" that often works much faster than the commonly-used Van Jacobson method and goes through many configurations of packet-filter based firewalls. More importantly, LFT implements numerous other features, including AS number lookups through...


Platforms: *nix

macf is a MAC-based packet filter. It can be on a machine acting as a firewall, router, bridge, or even a server, and allows operators to 'check out' MACs which may then be used for a period of time. Right now, it's on hold for lack of interest.


Platforms: Mac, BSD, Linux

Server load-balancing software for the OpenBSD PF packet filter


Platforms: Mac, BSD, Linux

Packet Construction Set is a set of Python modules and objects that make building network protocol code easier for the protocol developer. The core of the system is the pcs module itself which provides the necessary functionality to create classes that implement packets. Installation...


Platforms: *nix

602LAN SUITE is an easy-to-install and manage all-in-one network software suite providing secure e-mail services with anti-virus & anti-spam, fax support, built-in firewall with NAT and web content filter proxy for controlled Internet sharing. Combine the content based Bayesian antispam filter,...


Platforms: Windows

Capsa Network Analyzer Free Edition is an easy-to-use Ethernet packet sniffer (network analyzer or network sniffer) for network monitoring and troubleshooting purposes. It performs real-time packet capturing, 24/7 network monitoring, reliable network forensics, advanced protocol analyzing,...


Platforms: Windows, Windows 8, Windows 7, Windows Server

Nmap ("Network Mapper") is a free and open source (license) utility for network exploration or security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime. Nmap uses...


Platforms: Windows

iSafer offers free protection against attacks from the Internet. The open source firewall iSafer protects against intruders by blocking spyware, adware, and other programs that want to interfere with your files. You can block user-defined Ports, IPs and applications, and comfortably change...


Platforms: Windows