The arptables computer software utility is a network administrator's tool for maintaining the

Address Resolution Protocol The Address Resolution Protocol (ARP) is a communication protocol for discovering the link layer address, such as a MAC address, associated with a internet layer address, typically an IPv4 address. The protocol, part of the Internet protocol s ...

(ARP) packet filter rules in the

Linux kernel The Linux kernel is a Free and open-source software, free and open source Unix-like kernel (operating system), kernel that is used in many computer systems worldwide. The kernel was created by Linus Torvalds in 1991 and was soon adopted as the k ...

firewall Firewall may refer to: * Firewall (computing), a technological barrier designed to prevent unauthorized or unwanted communications between computer networks or hosts * Firewall (construction), a barrier inside a building, designed to limit the spre ...

modules. The tools may be used to create, update, and view the tables that contain the filtering rules, similarly to the

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, whi ...

program from which it was developed. A popular application is the creation of filter configurations to prevent

ARP spoofing In computer networking, ARP spoofing (also ARP cache poisoning or ARP poison routing) is a technique by which an attacker sends ( spoofed) Address Resolution Protocol (ARP) messages onto a local area network. Generally, the aim is to associate ...

2.4 only offers two ARP filtering chains, INPUT and OUTPUT, and

2.6 adds the third, FORWARD, applied when bridging packets.

External links

eb/arp tables websitedownload sitegit tree
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