Protocol_Analysis - Protocol Analysis Wireshark ( or...

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Protocol Analysis Wireshark ( or Ethereal, man and User Manual) -- by Dijiang Huang
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2 Protocol Analysis: The Process What is the problem? How do we solve it? Tools Ethereal Etherpeek Sniffer etc.
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3 TCP/IP protocol suite Application Medium Access/LINK Network Transport Web, Telnet, FTP, e-mail, etc. TCP, UDP IP device driver and interface card Application Layer protocols HTTP, telnet protocol, FTP protocol, SMTP Physical Transport media Incoming packet passed to OS
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4 Encapsulation user data user data Appl header application data TCP header application data TCP header application data TCP header IP header IP header Ethernet header Ethernet trailer application TCP IP Ethernet driver TCP segment IP datagram Ethernet frame 46 to 1500 bytes 14 20 20 4 Incoming packet passed to OS
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5 WWW Application ? ? ? ? ? Web Server Web Browser Get Web Page: www.sice.umkc.edu/~cotterr DNS
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Message Sequence: Web Browser Web Server DNS www.sice.umkc.edu
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Protocol_Analysis - Protocol Analysis Wireshark ( or...

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