June 2012
Intermediate to advanced
576 pages
19h 10m
English
Content preview from Network Forensics: Tracking Hackers through CyberspaceBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4. Packet Analysis
Twas brillig, and the Protocols Did USER-SERVER in the wabe.All mimsey was the FTP, And the RJE outgrabe,Beware the ARPANET, my son; The bits that byte, the heads that scratch...
—R. Merryman, “ARPAWOCKY” (RFC 527)1
Once you have captured network traffic, what do you do with it? Depending on the nature of the investigation, you might want to analyze the protocols in use, search for a specific string, or carve out files.
Perhaps you received an alert from an IDS about suspicious traffic from a particular host and you would like to identify the cause. Or perhaps you are concerned that an employee is exporting confidential data and you need to search outbound communications for specific keywords. Or perhaps ...
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