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  2. iptables - Wikipedia

    en.wikipedia.org/wiki/Iptables

    iptables is a user-space utility program that allows a system administrator to configure the IP packet filter rules of the Linux kernel firewall, implemented as different Netfilter modules. The filters are organized in a set of tables, which contain chains of rules for how to treat network traffic packets.

  3. Firestarter (firewall) - Wikipedia

    en.wikipedia.org/wiki/Firestarter_(firewall)

    Firestarter is a personal firewall tool that uses the Netfilter (iptables/ipchains) system built into the Linux kernel. It has the ability to control both inbound and outbound connections. Firestarter provides a graphical interface for configuring firewall rules and settings. It provides real-time monitoring of all network traffic for the system.

  4. Fail2ban - Wikipedia

    en.wikipedia.org/wiki/Fail2ban

    Fail2Ban can perform multiple actions whenever an abusive IP address is detected: [7] update Netfilter/iptables or PF firewall rules, TCP Wrapper's hosts.deny table, to reject an abuser's IP address; email notifications; or any user-defined action that can be carried out by a Python script.

  5. Uncomplicated Firewall - Wikipedia

    en.wikipedia.org/wiki/Uncomplicated_Firewall

    Uncomplicated Firewall (UFW) is a program for managing a netfilter firewall designed to be easy to use. It uses a command-line interface consisting of a small number of simple commands, and uses iptables for configuration. UFW is available by default in all Ubuntu installations since 8.04 LTS. [1]

  6. Shorewall - Wikipedia

    en.wikipedia.org/wiki/Shorewall

    Shorewall is an open source firewall tool for Linux that builds upon the Netfilter (iptables/ipchains) system built into the Linux kernel, making it easier to manage more complex configuration schemes by providing a higher level of abstraction for describing rules using text files.

  7. List of router and firewall distributions - Wikipedia

    en.wikipedia.org/wiki/List_of_router_and...

    Linux distribution: x86? Free: Single-floppy router with Linux's advanced firewall capabilities. FRRouting: Active: GPL2: Free Range Routing or FRRouting or FRR is a network routing software suite running on Unix-like platforms, particularly Linux, Solaris, OpenBSD, FreeBSD and NetBSD. Gargoyle: Active: Linux distribution: MIPS, x86-64

  8. ipfirewall - Wikipedia

    en.wikipedia.org/wiki/Ipfirewall

    A port of an early version of ipfw was used since Linux 1.1 as the first implementation of firewall available for Linux, until it was replaced by ipchains. [4] A modern port of ipfw and the dummynet traffic shaper is available for Linux (including a prebuilt package for OpenWrt ) and Microsoft Windows .

  9. Netfilter - Wikipedia

    en.wikipedia.org/wiki/Netfilter

    Netfilter is a framework provided by the Linux kernel that allows various networking-related operations to be implemented in the form of customized handlers.Netfilter offers various functions and operations for packet filtering, network address translation, and port translation, which provide the functionality required for directing packets through a network and prohibiting packets from ...