Wireshark sniff network traffic1/11/2024 If the WiFi network was open (as in, no encryption whatsoever), then you could simply "hear" with the sniffer in monitor/promiscuous mode.Īlas, the WiFi network is encrypted, so, you usually would need first to monitor the traffic to crack that encryption (WEP or WPA2, the latter being the de facto standard this days and the former being absolutely useless, both are vulnerable). I guess you have 2 WiFi devices, lets call "host" the legitimate network device connected to the AP/Router and "sniffer" the one trying to capture the traffic. After your comments and update, I will try to answer, even though I'm still not sure I'm getting the question right. Perhaps I am missing something in my understanding of the data flow here?. So I would consider it possible I might be able to decrypt the radio packets between the target client and the AP, given the correct wireless passphrase (which again, I have). However, if I can see the radio traffic, I would expect to see all of the radio traffic, which would thusly contain all of the IP, even if it were encrypted. There was a warning that some network cards would disassociate during monitor mode, which does make sense. Then I switched to monitor mode for that interface (see screenshot #3), and all I could see was radio traffic, not the IP within that radio traffic. I was also monitoring in 'ethernet' mode. (This makes sense, even though I was in promiscuous mode, the traffic was between the AP (access point), and the target wireless client.) This made sense, since I was monitoring the local interface, and the traffic from the target device wasn't flowing through my interface on the macbook. I was able to detect network traffic from my local computer to the URL in question, but when viewing the same URL from a different device, I was not able to see that device's traffic. Update for context and more information for I started this process, I used promiscuous mode on the en0 interface (wireless) on a macbook air. If this is the case, is there software to decrypt the data after it has been recorded? If I need the passphrase, I have it (given that this is my lab network). What settings am I missing, or do I need to decode the WPA2 passphrase to view the data? I am also able to see and capture 802.11 packets using monitor mode, but I cannot see their content. I have wireshark configured properly to capture on the wireless interface. I've seen this in action (ala firesheep) on a wired network. I'd like to demonstrate that unencrypted (non-HTTPS) network traffic on a wifi network can be viewed by other wireless devices. I'm attempting to replicate a 'wifi cafe' setup in a home lab environment.
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