Hello,
I have an embedded device with a WL1837MOD wifi chip. To debug wifi connection problems directly on the device, I am trying to capture all wifi traffic from the WL1837MOD to the AP and vice-versa. I use the libpcap library (version 1.9.1) on linux-fslc-imx kernel (5.4-2.1.x-imx) to capture network pakets. This works well for e.g. TCP communication, but for the connection phase where the device is authenticating to the AP with EAP and EAPOL messages, the pcap library seems to only capture the pakets received by the WL1837MOD but not the pakets it sends to the AP.
Is it possible to capture the authentication and assiciation packages sent by WL1837MOD or are these messages generated in the modules' firmware and therefore cannot be captured with libpcap? Is there another way to capture all traffic without using an external wifi sniffer?
Regards,
Michael
