Linux or UNIX: HowTo Find Out or Display The Ethernet Address (MAC)

Posted on in Categories FreeBSD, Linux, Networking, OpenBSD, OS X, Solaris, UNIX, Windows server last updated March 31, 2012

Media Access Control (MAC) address is a unique identifier attached to most networking devices (such as router, Ethernet cards, servers, nas devices, switches and so on).

This blog posts demonstrates how to get the Media Access Control (MAC) address for an ethernet adapter under Linux, Unix, Apple OS X, and *BSD operating systems using command line options.

Iptables MAC Address Filtering

Posted on in Categories Iptables, Linux last updated December 15, 2010

LAN or wireless access can be filtered by using the MAC addresses of the devices transmitting within your network. A mac address is acronym for media access control address, is a unique address assigned to almost all-networking hardware such as Ethernet cards, routers, mobile phones, wireless cards and so on (see mac address at wikipedia for more information). This quick tutorial explains how to block or deny access using MAC address using iptables – Linux administration tool for IPv4 packet filtering and NAT.