Network Gateway has been made having a combination of protocol translators, rate converters, fault isolators, & impedance matching devices. It serves as a communicating medium between neither two nor more devices so as to allow easy & reliable contact between connected devices. This gateway is necessary & most important to get access of internet via wired connection. It is known to give flexibility to be implemented in software, hardware, or both as per need. Network Gateway connects LAN to other devices for assuring uninterrupted internet supply. It can also act as firewall & proxy server in enterprise networks.