Packet Hear it!

Packet definition - hacker
Data travels along the Internet in packets that are sent individually across the network and then reassembled into the original data at the correct recipient address. Each packet is like a letter in that it has a sender and a receiver. When the packet reaches the correct receiver address, it stops traveling.

Every packet has the following fields: source IP address (such as 10.23.1.156); destination IP address; transport type (such as ICMP=1, TCP=6, UDP=17); source port and destination port (such as DNS=53, FTP=21, HTTP=80); and flags (such as SYN).

See Also: Encapsulation; Internet; Internet Protocol (IP); IP Address; Port and Port Numbers; Synchronize Packet (SYN).

Graham, R. Hacking Lexicon. [Online, 2001.] Robert Graham Website. http://www.linuxsecurity.com/resource_files/documentation/hacking-dict.html.

Webster's New World Hacker Dictionary Copyright © 2006 by Bernadette Schell and Clemens Martin.
Published by Wiley Publishing, Inc., Indianapolis, Indiana.
Used by arrangement with John Wiley & Sons, Inc.

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