Network http sniffer4/11/2023 ![]() ![]() It also helps them to identify the misuse of the network, data vulnerability, and malware attacks.Network administrators use packet sniffing to ensure data security and diagnose if any network issues occur in the network.Packet sniffing has both legitimate and illegitimate uses. They also use the captured packets for man-in-the-middle attacks or packet injection attacks in vulnerable systems. Hackers spy on unencrypted data in these packets to identify the information exchanges between both the parties. A packet sniffer installed in the network analyzes the packets and converts them into a readable format. Hackers intercept and get hold of the raw data packets during their journey across the network. The small packets are reassembled when they reach their targeted destination. These packets contain information about the sender, which includes IP address, authentication tokens, details of the interaction between the nodes of a network, and other content. ![]() This data is broken down into smaller packets in packet-switched networks. How packet sniffing worksÄata travels through a network in the form of packets. An attacker needs to connect to LAN and sniff data from the network. Passive sniffing uses hubs that use MAC addresses to read the data destination ports. Hackers leverage this by injecting the traffic into the LAN to enable sniffing. Switches use the media access control (MAC) address to forward data to their destined ports. This type of sniffing is conducted on a switched network which connects two network devices through a switch. ![]() There are two types of sniffing attacks based on capability and design: Sniffing enables us to track email traffic, router configuration, FTP and telnet passwords, and web and DNS traffic. Packet sniffing applies to both wired and wireless internet networks. To be precise, a packet sniffer can see all traffic flowing back and forth across a network. The sniffers gather raw data from networks and they are used with protocol analyzers to translate the data into a readable format. A hardware packet analyzer stores the collected packets or forward them to a collector that logs the collected data for further analysis. ![]() A hardware packet sniffer will be plugged into a network. A software packet sniffer configures the network interface that it passes every network traffic. The former is more common as they are open source. Packet sniffers can be installed in the form of software and hardware. Packet sniffing can be defined as the process of monitoring and capturing data packets that pass through a computer network with the use of packet sniffers. This article examines packet sniffing, different types of packet sniffing, and ways to defend against it. A network administrator leverages sniffing to monitor the data traffic whereas malicious attackers use them to track data packets in a network. Sniffing is one of the widely used methods to track internet activities across a network. Someone or the other is checking out your browsing behavior and personal data for their monetary benefits. The way you are watched has varied greatly with the advent of technology. But in the modern world, there are zero chances that you are not being monitored while accessing the internet. Most of us browse online with the strong belief that no one is spying on us. ![]()
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