November 2012
Intermediate to advanced
318 pages
6h 36m
English
Content preview from Nmap 6: Network Exploration and Security Auditing CookbookBecome 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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Hiding our traffic with additional random data
Packets generated by Nmap scans usually just have the protocol headers set and, only in certain cases, include specific payloads. Nmap implements a feature to decrease the likelihood of detecting these known probes, by using random data as payloads.
This recipe describes how to send additional random data in packets sent by Nmap during a scan.
How to do it...
To append 300 bytes of random data, open your terminal and type the following command:
# nmap -sS -PS --data-length 300 scanme.nmap.org
How it works...
The argument --data-length <# of bytes> tells Nmap to generate random bytes and append them as data in the requests.
Most of the scanning techniques are supported in this method, but it is important ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.