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Unable to see IP address in monitor mode

asked 2024-11-22 13:54:06 +0000

Zenon Martin gravatar image

updated 2024-11-22 14:20:42 +0000

grahamb gravatar image

I am trying to get the IP add of a tuya WIFI door sensor so enabled monitor mode, but after that I do not see any IP address (not only tuya sesnor) .Reading the forum someone mentioned becasut of 802.11 management traffic and other because it is encrypted . But I think those answers do not apply to my scenario:

  1. I do receive the alert on my phone,so the IP packets are going to internet
  2. Yes, I do have encryption, but removing monitor mode I do get ip add

any idea what am I missing here ?

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answered 2024-11-22 18:28:16 +0000

johnthacker gravatar image

It is because of encryption. When you are capturing normally, without monitor mode, your WiFi network interface is performing the decryption and the packets that are captured are post decryption.

In monitor mode you're capturing the packets as they are on the air, pre decryption. You have to give Wireshark sufficient information to decrypt them - Wireshark doesn't know the decryption keys and they aren't sent over the air unencrypted as that would defeat the purpose.

Presumably you're using monitor mode because you want to scan packets sent in the air not intended for your capturing device. Note that if WPA3 is used then knowing the SSID password is not enough in order to decrypt packets between two other devices not the capturing device, even if you do capture the EAPOL handshake.

https://www.wireshark.org/docs/wsug_h... https://wiki.wireshark.org/CaptureSet...

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Asked: 2024-11-22 13:54:06 +0000

Seen: 317 times

Last updated: Nov 22