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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.
Ubuntu derivative: x86, x86-64: Open source: Free with paid services available: Zentyal is an open-source router/firewall and small business server. Zeroshell: Discontinued: Linux distribution: x86, ARM: GPL V2: Free (contribution required for some graphing functions) Web-administrative router/firewall live CD with QoS features.
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]
This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for bidirectional traffic. TCP usually uses port numbers that match the services of the corresponding UDP implementations, if they exist, and vice versa.
In August 2012, version 12.0 was released with the library increased to include over 100 appliances. This release also marked a move away from Ubuntu as the underlying operating system to Debian 6.0 (a.k.a. Squeeze). This move was cited as being for various reasons, particularly security. [17]
It is developed for the Debian Linux distribution, and is closely integrated with Debian's package management system, dpkg. When packages are being installed, debconf asks the user questions which determine the contents of the system-wide configuration files associated with that package.
OpenWrt provides exhaustive possibilities to configure common network-related features, like IPv4, IPv6, DNS, DHCP, routing, firewall, NAT, port forwarding and WPA. Other features include: Extensible configuration of the entire hardware drivers, e.g. built-in network switches and their VLAN -capabilities, WNICs , DSL modems , FX , available ...
The arptables computer software utility is a network administrator's tool for maintaining the Address Resolution Protocol (ARP) packet filter rules in the Linux kernel firewall modules. The tools may be used to create, update, and view the tables that contain the filtering rules, similarly to the iptables program from which it was developed.