September 2018
Intermediate to advanced
304 pages
6h 35m
English
Content preview from Network Scanning Cookbook
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Port scanning
In this phase, we will perform detection of the ports open for a specific host based on the communication between the host on that port to your machine. This technique helps to determine whether a particular port is open or closed. This technique differs from protocol to protocol. For example, for TCP, the communication and the pattern to conclude a port to be open is different when compared to UDP. Some of the tools that can be used to perform port scanning are Nmap, Nessus, OpenVas, and Wireshark.
The following screenshot shows a sample host scanned using Nmap for port 80. The screenshot shows that the host is up and port 80 with state as open, thus we can determine the host is live. These tools come in handy if the ping is ...
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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.