A simple packet sniffer using pcap library:

• To install, clone the repo and then cd into the repo
• Then run the following:

gcc sniffer.c -o sniffer -lpcap

• Then after it compiles:

./sniffer ip 

You can also replace "ip" in 3 with tcp, arp, etc

The packet sniffer counts the packet number, packet length and displays the payload.