At the beginning of this chapter, we learned about the concept of a sniffer, the use of a sniffer over the network, which at times might reveal big secrets such as a password, chats, and so on. In today's world, mostly switches are used, so you should know how to perform active sniffing. We also learned how to make up a layer 4 sniffer. Next, we also 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 scan are special types of scanning that we touched upon too. Lastly, ping of death, which is related to the DDOS attack, was explained.

In the next chapter, you will learn about wireless network sniffing and wireless attacks. Wireless traffic is different from a wired network. To capture wireless traffic, you don't need physical access, and this makes wireless traffic more vulnerable. We will learn in brief how to capture wireless traffic and how to attack the access point in the next chapter.