February 2002
Intermediate to advanced
544 pages
11h 24m
English
Content preview from Hack I.T.: Security Through Penetration TestingBecome 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 14. Sniffers
Sniffers are programs that passively monitor and capture network traffic. Almost any laptop or PC can be turned into a sniffer by installing sniffer software, much of which is freely available on the Internet. The system running the sniffer should have a network interface card that can be used in promiscuous mode. Promiscuous mode enables the sniffer to view but not respond to network traffic, thereby making the sniffer essentially invisible on the network. Sniffers are very useful tools during penetration testing and network troubleshooting. We commonly use them to capture user names and passwords from FTP and telnet sessions. In addition, sniffers can be used to capture any network traffic that is not encrypted, such as ...
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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.