Specifications

SWITCHware System Administration Manual36

A netmask is a set of four number blocks separated by periods. Each number is normally represented

as the decimal equivalent of an eight-bit binary number, which means that each number may take any

value between 0 (all eight bits cleared) and 255 (all eight bits set). Every IP address consist of two parts

(the network address and the host number). The netmask is used to determine the size of these two

parts. The positions of the bits that are set in the netmask are considered to represent the space

reserved for the network address, while the bits that are cleared are considered to represent the space

set aside for the host number.

Gateway:

A combination of hardware and software that links two different types of networks. Gateways between

e-mail systems, for example, allow users on different e-mail systems to exchange messages.

DNS Server1 and Server2:

DNS or Domain Name Server is a computer/server that maps IP Address to a Name/Domain which

allows humans to easily use. (Ex. 192.168.1.5 > www.yourdomain.com). The fields allow you to

configure two different DNS Servers.