How to disrupt WiFi communication between two esp's ?

Years ago, my colleague made a little device that emitted waves on the same frequency as a major TV channel here. It was a simple white noise transmitter that he carried in his pocket.

He had fun. He pretended to be a viewer at a bus station here in the city that had some televisions for the public to watch. There was no cable TV at the time, the signal came through common antennas.

Especially in football games there he would be with his hands in his pocket and when an exciting move occurred he would press the button and the image would go off the air.

He silently enjoyed seeing the others' reactions. Luckily his conscience made him stop it.

A few days ago I had an assembly using a pair of 433Mhz RF transmitters and the rcswitch library. My neighbor arrived and opened his garage door with his remote control. I accidentally saw his code on my Arduino IDE serial monitor. I put the code in the esp8266 TX and managed to open my neighbor's garage door.

Now I have 1 ESP01S transmitter and a NODEMCU12E receiver that communicate through the router using the same IP through client.connect(server, 80);

And the question of this long introduction is:

If I have a third ESP on hand, if I am within range of my WiFi router and know the IP through which my two ESPs communicate, can I somehow disrupt communication between them?

A) Yes, but it's not easy. It's not enough to have just one more Arduino. It requires being in a laboratory with more instruments.

B) No, even knowing the IP is not possible.

NOTE: Communication occurs successfully only if the TX sends the correct data to the RX. Ex: 123456789. The holder of the third ESP does not have this information. It only has the IP.

Anybody know ?

Thanks

Has this subject not already been discussed in one of your other topics ?

If the answer is YES, and if it's relatively easy, can anyone tell me what I can do to test using the Arduino IDE? I mean, what code to use to try to interfere in the communication between TX and RX.

Grateful

Before you start jamming radio channels that don’t belong to you, do some research into the most comfortable prisons in your area.

3 Likes

I came to think like this: A code that would send anything to the IP as if it were a 'machine gun', that is, without stopping. Will the RX still accept the code 123456789 sent by TX, normally ?

Why would you want to do that.

And even if you could do you think it would be wise or legal for the 'how to' instructions to be published on this forum ?

In view of the nature of the subject of this topic it has been closed

Should the subject be pursued elsewhere on the forum then the poster will run the risk of being suspended from the forum

4 Likes