Many of us know that sniffing is possible in a shared i.e. non-switched ethernet environment. But only few of us know that sniffing is also possible in a switched ethernet environment. One of the reasons is that it's not that straighforward. But it's not impossible or difficult. You can use man in the middle technique like ARP spoofing to sniff in a switched environment.
This presentation is an attempt to explain how can somebody sniff in a switched ethernet using ARP spoofing. Dsniff has existed for long as a tool for various sniffing activities. But recently, tools like EttercapNG have made it easier.
Sniffing in a Switched Network (PDF format)
Sniffing in a Switched Network (Microsoft PPT)
"Truth will set you free!"
Technorati tags: security hacking networking sniffing
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