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Firewall

Network Firewall

Linux/BSD/Unix Firewall

  • netfilter / iptables
    Firewall, NAT and packet mangling for Linux 2.4+. The netfilter/iptables project is the Linux 2.4.x / 2.5.x firewalling subsystem. It delivers you the functionality of packet filtering (stateless or stateful), all different kinds of NAT (Network Address Translation) and packet mangling.
    netfilter at Samba.org.
    LinuxGuruz Netfilter IPTABLES Firewall Page.
  • IP Filter
    IP Filter - TCP/IP Firewall/NAT Software. IPFilter is a software package that can be used to provide network address translation (NAT) or firewall services. It can either be used as a loadable kernel module or incorporated into a UNIX kernel. IPFilter comes as part of FreeBSD, NetBSD, OpenBSD, and it has also been tested and run on Solaris, SunOS, BSD/OS, IRIX, OpenBSD, HP-UX, Tru64, QNX.
    IPFilter FAQ by Phil Dibowitz. IP Filter HOW-TO. IP Filter Mailing List.
  • IPFilter and Packet Filter (PF) resources
    IP Filter Based Firewalls HOWTO.
    By Brendan Conoboy, Erik Fichtner.
  • Firewall Builder
    Firewall Builder consists of an object-oriented GUI and a set of policy compilers for the popular free firewall engines: iptables, ipfilter and OpenBSD PF. A firewall policy is a set of rules; each rule consists of abstract objects that represent real network objects and services (hosts, routers, firewalls, networks, protocols). Firewall Builder helps users maintain a database of objects and allows policy editing using simple drag-and-drop operations. Preferences and object databases are stored in XML format. The GUI is written using GTK toolkit and can be used on both Gnome and KDE systems. Firewall Builder is part of many Linux distributions.
    SourceForge.net: Firewall Builder Project & Home-Page.

Personal Firewall

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