about things with packet

출처: 모르겠음..;;

Packet sniffer: network analyzer, protocol analyzer, Ethernet sniffer or wireless sniffer
computer software or computer hardware that can intercept and log traffic passing over a digital network or part of a network. As data streams travel back and forth over the network, the sniffer captures each packet and eventually decodes and analyzes its content according to the appropriate RFC or other specifications.

Network Traffic Monitor & Analyzer
Packet Capture and Traffic Analysis

Well-known packet sniffers
AiroPeek
dSniff
Ethereal
EtherPeek
Ettercap
Kismet
Javvin Packet Aalyzer
NetStumbler
Network General Sniffer
Network Instruments Observer
OmniPeek
PRTG
snoop (Solaris)
tcpdump
Wireshark (formerly known as Ethereal)
WPE (Winsock packet editor)