Network tap is best solution for grabbing data packet in a network. It is a hardware device which provides a way to access the data flowing across a computer network. Computer networks, including the Internet, are collections of devices, such as computers, routers, and switches that are connected to each other.
Network taps are commonly used for security applications because they are non-obtrusive, are not detectable on the network, can deal with full-duplex and non-shared networks, and will usually pass-through traffic even if the tap stops working or loses power.
