The major objective of this article is to analysis about VLAN Networks. VLAN by definition is short for practical LAN, a kind network connectivity that allows hosts to converse with each other as if they are in the similar location, even if they are not. VLANs by themselves have no form of safety and you want to place hardware that is able of automatically securing these channels. One of this hardware or software completion is the use of what is called a ‘firewall’. A firewall is basically a hardware or software program that has the capability to monitor and check the identity of the network packets being sent or acknowledged by a local area network.