Advances of LAN Security Setup: The company should use firewall in order to separate the wireless Local Area Network. A gateway/ firewall is used in order to separate the wireless and wired networks. This helps to screen the traffic in wired network. The firewall secures the unauthorized usage in the wired network. Usage of virtual private network also helps in securing a network. For higher level of security virtual private network can be set up. In virtual private network the clients communicate through an encrypted tunnel in a wired or a wireless network.