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Created: Saturday, December 9 2006 22:47.05 CST

Modified: Monday, December 11 2006 19:17.20 CST

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Pcapy (Sniffing) on WiFi

Author: pedram

# Views: 3107

I like to develop on my (Windows) laptop... I also like to develop from the comfort of my sweet Corda-Roy bean bag chair, which means I'll be connected via WiFi. Unfortunately sniffing via Ethereal or CORE's Pcapy library is not possible in this situation. I came up with a convenient 2-step solution to my woe that perhaps others will find useful.

First, snag yourself an Ethernet Loopback Jack and plug it in. This will trick your NIC into thinking it's actually plugged into a network. Next, create a network bridge and add the LAN adapter followed by the WiFi adapter. The network bridge shows up as a new interface that you can sniff on!

***** UPDATE *****
tagetora was kind enough to write me and suggest trying to bridge with a loop back device to avoid the additional hardware. I'm pleased to report that it works like a charm. For instructions on how to create a loop back device see: http://support.microsoft.com/kb/839013.

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