May 2018
Intermediate to advanced
326 pages
8h 32m
English
Content preview from Practical Network Scanning
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Check for open ports or services
Identifying open ports on servers requires the port to be opened and unnecessary services to be disabled or shutdown. The server should have a minimal operating system configuration.
For Windows, run the following command using the Command Prompt:
netstat -a | findstr "LISTEN"
The ouptu of the preceding command is as shown in the screenshot:
For Linux/Unix, run the following command using the shell prompt:
netstat -antp | grep "LISTEN"
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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.