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How do users connect IOT device to WiFi?

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NiHaoMike:

--- Quote from: Fire Doger on August 09, 2019, 05:37:40 am ---How you will make the server infrastructure to work over the internet?

--- End quote ---
There are plenty of free dynamic DNS services. There's also Tor, but I think that's a bit too complex for an ESP8266.

soldar:

--- Quote from: hamdi.tn on August 09, 2019, 12:05:30 pm --- I think the frame is encrypted
--- End quote ---

I don't understand this. An APP is connected to the WLAN AP through the phone's OS. It wants to send a packet and it hands it to the OS and in the header is the address of the recipient. The OS encrypts the packet and sends it over the WIFI. Being encrypted makes it opaque to any and all listeners. So how is a device listening in going to get anything out of it?

I don't understand how it can work.

Jeroen3:
The length and destination of the packet are not encrypted.

Fire Doger:

--- Quote from: NiHaoMike on August 09, 2019, 01:15:13 pm ---
--- Quote from: Fire Doger on August 09, 2019, 05:37:40 am ---How you will make the server infrastructure to work over the internet?

--- End quote ---
There are plenty of free dynamic DNS services. There's also Tor, but I think that's a bit too complex for an ESP8266.

--- End quote ---
Posts above indicates that some users have hard time changing wifi network on their phones.
Will they make an account to Free DNS provider, pass back and forth info and credentials to connect ESP to DNS and open any firewall setting on their router to give access from outside into the ESP?
Also how secure is having a public server in your local network based on ESP?

soldar:

--- Quote from: Jeroen3 on August 10, 2019, 11:39:28 am --- The length and destination of the packet are not encrypted.
--- End quote ---

That does not answer my question. How is it done?

Suppose the device is sniffing the airwaves and it "sees" several WLANs. Now what? Let us suppose it decides to listen to the strongest one and it "sees" packets, long and short, coming and going, among a bunch of different devices. Now what?

The question is: How can it be done?
 

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