September 2018
Intermediate to advanced
304 pages
6h 35m
English
Content preview from Network Scanning Cookbook
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Host discovery
A network comprises many hosts based on the subnet provided. For example, a subnet with a mask value of 27 will have 32 hosts, whereas a subnet with a mask value of 24 will have 256 hosts. A full port scan on 256 hosts, without knowing which of those hosts are live, could take a lifetime. In order to reduce the traffic generated and processed by Nmap we can filter the network hosts based on live and non-live hosts. This will allow Nmap to reduce unwanted analysis and obtain results quicker.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.