At the beginning of this chapter, we learned about the concept of a sniffer, and the use of a sniffer over the network, which at times might reveal big secrets, such as passwords and chats. In today's world, switches are mostly used, so you should know how to perform active sniffing. We also learned how to make up a layer-4 sniffer. Then we learned how to perform ARP spoofing. You should test the network by ARP spoofing and write your findings in the report. Then, we looked at the topic of testing the network by using custom packets. The network disassociation attack is similar to the ARP cache poisoning attack, which was also explained. Half-open, FIN scan, and ACK flag scans are special types of scanning that we touched upon too. Lastly, ping of death, which is related to the DDOS attack, was explained.

In Chapter 4, Network Attacks and Prevention, we will learn...