What are the different types of sniffing?

Question

Q:

What are the different types of sniffing?

Answer 1

There are two types of Sniffing:

1. Active sniffing: It is used in a switch-based network. A switch is a point to point network device. In the active sniffing, the traffic is locked, monitored, and may be altered in some way determined by the attack. 
2. Passive sniffing: It involves sniffing through the hub. In Passive sniffing, the traffic is locked but not at all altered. Any traffic that is passing through the unbridged or non-switched network segment can be seen by all the machines on the segment. In this, sniffers operate at the data link layer of the network.