Media Access Control address. A 6-byte hexadecimal address that a manufacturer assigns to the Ethernet controller for a port. Effectively, every Ethernet device has a unique MAC address that is used by higher-layer protocols.
MD5
Message-Digest Algorithm 5. A 128-bit one-way hashing algorithm used in many authentication algorithms. It is now generally considered unsuitable for strong encryption.
Megahertz
A measure of electromagnetic wave frequency equal to one million (1,000,000) hertz, often abbreviated as MHz.
MIC
Message Integrity Check. A method to check the integrity of wireless packets to ensure that they have not been intercepted and modified. Forms part of WPA.
MS-CHAP
Microsoft Challenge Handshake Authentication Protocol. Microsoft's extension to CHAP. MS-CHAP is a mutual authentication protocol that also permits a single login in a Microsoft network environment.
mW
Milliwatt. A unit of power equal to one thousandth of a watt. WLANs measure power in mW.
