Why do we need to connect to a network to be able to read all packets while packet sniffing?

I can’t understand much about packet sniffing operation when it’s in a network.
Well, packets are encrypted with PTK to prevent sniffing from monitor mode but when we are in client mode and we connected to a network, we were able to read t… Continue reading Why do we need to connect to a network to be able to read all packets while packet sniffing?

How can someone on the same GPON splitter network sniff my internet traffic?

I currently have a fiber optic internet connection at home. My ISP uses GPON where the ONU acts as a gateway device which has a direct fiber optic connection to it. ONU is a Huawei HG8145V5.
I understand that downstream network traffic in … Continue reading How can someone on the same GPON splitter network sniff my internet traffic?

Can a powerline network adapter be more easily used to listen to traffic on another router?

A roommate of mine asked me to connect a powerline adapter to the network. The ethernet cable of the adapter is connected to an Apple Airport Express router which is connected to a Frontier Internet cable modem. I have another router from … Continue reading Can a powerline network adapter be more easily used to listen to traffic on another router?

Constructing PTK key from sniffed traffic and decrypting WPA2 network traffic using it

Suppose there is a WPA2/PSK access point (AP) and 2 clients are connected to it, say X and Y. So X and Y both know the password or PSK required for authentication.
From here:

In case of WPA2/PSK when device authenticates with access point… Continue reading Constructing PTK key from sniffed traffic and decrypting WPA2 network traffic using it