tcpdump to monitor network traffic

1. The below captures from the desired interface en0 
	a. # tcpdump -i en0
2. The below will capture specified number of packets
	a. # tcpdump -c 5 -i en0
3. The below displays all available interfaces
	a. # tcpdump -D
4. Capture IP Address Packets
	a. # tcpdump -n -i en0
5. Capture only Tcp Packets
	a. # tcpdump -i en0 tcp
6. Capture only from specific port
	a. # tcpdump -i en0 port 22
7. Capture packets from Source IP
	a. # tcpdump -i en0 src <your ip address>