Discovering LAN, IP, and TCP/UDP-Based Attacks

Local Area Networks (LANs), Ethernet protocols, and LAN switching are used to implement layers 1 and 2 and carry information between nodes that are directly attached to the LAN. The Internet Protocol (IP) provides addressing and enables routing protocols to forward packets between end nodes – that is, layer 3. The Transport Control Protocol (TCP) and the User Datagram Protocol (UDP) are the main protocols in Layer 4 that provide connectivity between end processes – for example, a client and a server. In addition to these, there are several other protocols that assist in the proper operations of the network; among them are the Address Resolution Protocol (ARP), which resolves the destination ...

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