Questions tagged [networking]

For questions about networks of Internet of Things devices and their administration, management and security. Consider using more specific tags instead of this where they apply, since this tag is intended for generic questions about networking itself.

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Possible reasons why my Alexa turns on the wrong light

We have multiple IoT devices at home. For this explanation, we're concerned about the bedroom lights and kitchen lights. I have two Alexa devices, the main one is in the kitchen (Echo Show) and the ...
0 votes
0 answers
24 views

Private ip in raspberry pi?

I have a Raspberry pi 4 that is connected to a therm sensor ds18b20. The Raspberry Pi is running a flask application in 0.0.0.0 in port 5000, the app gives the current temperature using the sensor ...
0 votes
1 answer
34 views

How to inspect trail camera network

I was recently given a trail camera, "wildlife camera." It works great, but the mobile app to connect and see the pictures/videos is very janky and hard to use. I write software for a living,...
1 vote
1 answer
76 views

Failed to connect to TCP server on ESP32

I wrote a TCP client in C and a TCP server in Python. The client runs on a ESP32S2 board while the server runs on my PC (virtual Linux OS) and both the board and PC are connected to the same Wi-Fi. ...
0 votes
0 answers
29 views

Jetson AGX Xavier - mmc_rx_fifo_overflow Meaning

Currently running JetPack 4.4 - L4T R32.4.3 on a ConnectTech Jetson Xavier AGX. We have our own custom application accepting data on one of the ethernet ports via UDP. Occasionally we’ll notice that ...
0 votes
1 answer
30 views

Does 4G based OBD-ii device have mac or physical address? And alternative solution for restricting and whitelisting

I know that almost all devices need a mac or a physical address to work with the Internet. I want to know that GSM-based devices like OBD-II have such addresses. We asked the manufacturer and they ...
0 votes
1 answer
33 views

How can this PV-monitoring system communicate bidirectional

I've got a solar panel system with a Growatt inverter. The system has a monitoring platform. To connect the inverter to the internet to let it communicate with the monitoring portal, you need a "...
1 vote
0 answers
32 views

Apple TV - route specific app(s) through VPN

Apple TV does not have support for VPN apps like SurfShark or ExpressVPN like Android. The problem There is one specific app I would need to go through a specific country. All other apps should not ...
0 votes
0 answers
21 views

Does a fully dynamic host-guest cluster system already exist?

I'm looking for existing literature on systems where the host as well as the guests are all dynamic; any device might drop out at any moment, or reconnect. Use case: ad-hoc mobile compute-farms where ...
18 votes
6 answers
8k views

How do I avoid port forwarding when exposing IoT devices to the external Internet?

I received some good answers in the question What do I need to create my own personal cloud for IoT devices? and one of the things that I understood from there is that I need to "expose" my HUB or ...
0 votes
0 answers
54 views

How to triangulate phone position?

Description: I am trying to create a map to see how people carrying a cellphone move inside of a given region (e.g. a building). Since not everybody has Bluetooth or Wi-Fi turned on, I was trying to ...
2 votes
1 answer
236 views

How can I identify what kind of IoT device is in my network?

I am trying to build a system in which IoT devices can connect and are classified without the need for manual checks by the system administrator. In this system, IoT devices will send data, and on the ...
-3 votes
1 answer
48 views

Why it is called Internet [closed]

Hi Today was my first computer class and our teacher told me that using internet my computer talks to other computers outside my house then if it is talking to outside computers why it is called ...
9 votes
2 answers
965 views

Connect IoT devices directly to Wi-Fi , through VLAN or through a Raspberry Pi?

I have a bunch of IoT switches connected to my Wi-Fi. I am aware of three possibilities to connect and control them. Through the Wi-Fi directly (like Samsung SmartThings does) Connect them to a ...
3 votes
1 answer
190 views

Mylek heater on Tuya app - online/offline

I've been using the Tuya app on iPhone for a couple of months, first with a Devola heater which broke down in a month so I sent it back, now with a Mylek. I didn't realise until I got the Mylek that ...
3 votes
1 answer
2k views

Samsung SmartThings washer and dryer unable to connect to the app

For the past few weeks I've been unable to use my Samsung SmartThings washer and dryer via the app. I use the notification feature to keep track of completed loads and sometimes use the app to start ...
0 votes
1 answer
109 views

Named URLs on Local Network

How can I access my IoT peripheral device (raspberry pi B3+) on my local network in a reliable way? I want to use WiFi not BLE. I want to protect against the device getting a different IP when it is ...
3 votes
1 answer
357 views

How to simulate an IoT device or a network of IoT devices without hardware?

Hey IoT stack community! I want to ask how I can simulate an IoT device or a network of IoT devices, if i don't have a single piece of hardware? Is this possible in any way at all? To give you some ...
12 votes
3 answers
744 views

Does XMPP have a large overhead for IoT devices sending short, frequent messages?

I've been reading about XMPP as a potential communications protocol for IoT devices but, after reading one source, I'm unsure whether it's really an appropriate protocol if you're concerned about ...
0 votes
1 answer
44 views

How to add the feature of adding wifi device or iot device in an app?

I created an application on dyo appypie platform. The platform doesn't have the feature to add any WiFi or IoT device. I am having conversation with developer team, because it is dyo platform they can'...
0 votes
0 answers
53 views

Automatically get APN

It seems that my phone somehow can get APN settings automatically, after inserting my old SIM card to the new phone m.tinkoff in iOS Mobile Data Network menu appeared automatically, and this correct ...
7 votes
2 answers
174 views

Connecting your Pi to the internet when mobile

So I am working on a project where I have torn away all the RC related parts of an older 1/10 scale Racing Buggy I had as a kid and replacing said parts with some Arduinos and a GPS to create a super ...
1 vote
1 answer
106 views

CoAP protocol using californium java library

I am working with CoAP californium library using java and my problem is that I want to get the requested resource from client in the main function of server here .. public static void main(String[] ...
0 votes
0 answers
277 views

Can I upload 2 code files to a NodeMCU

I have a NodeMCU board. I uploaded blink example for that board and I need to add another example project from the IDE. What happens to the 1st code example or blink example when 2nd code uploaded. Is ...
8 votes
2 answers
3k views

Creating an HTTP GET polling service on a Raspberry Pi Client

I have the following hardware: 3 x Particle Photons. Each serve as an HTTP Server 1 x Raspberry Pi 3 which will serve as an HTTP Client Upon requesting an HTTP GET to any of the the Photons, the ...
0 votes
1 answer
369 views

(Re)Joining existing Lora-wan end-devices to another network server

We are moving our Lora-wan gateways and end-device from Loriot to another opensource network server. But we are experiencing problems with some of our devices, when trying to rejoin using OTAA. What ...
7 votes
2 answers
12k views

Why arp -a does not show all devices connected to WIFI? [closed]

I am trying to see the IPs of all the devices connected to my WIFI. Everyone suggests to use the command arp -a in the terminal but when I do so I get always the same list of devices. I try to connect ...
2 votes
0 answers
129 views

Using Alexa as speaker over LAN

I would like to use my Alexa as a speaker for my (windows)PC. My PC doesn't have Bluetooth and Alexa is not directly connected to my PC. Since the Alexa is connected to the same router (via WiFi) as ...
4 votes
1 answer
113 views

Microchip RN2903: TX/RX distance with internal antenna

My question is about the maximum transmission distance achieved with the Microchip SoC RN2903, only using its internal antenna. I've been doing field tests in urban environments, with this module and ...
-1 votes
1 answer
55 views

How to fix this problem "connection to this site is not secure"? [closed]

I tried to access this website http://www.oaic.dz:9001/forms/frmservlet many times, but it denied me accessing (only white page) as it shows in the attached file (screenshot) I tried installing Java, ...
7 votes
4 answers
7k views

Is it a good option to send images over LoRa network?

LoRa (Long Range) technology is one of the promising technology which offers long range communication with low power consumption. Therefore when building a device that can be deployed in a no ...
3 votes
1 answer
818 views

"Smart" switch keeps disconnecting from wi-fi network

I bought a smart switch to control my room lamp. It is a JWCOM Smart SA-01 model with very little to no documentation available on the internet (at least I wasn't able to find anything useful). The ...
5 votes
3 answers
1k views

Accessing IoT device from remote server using IP address

Is it possible to access an IoT device (which may be a HTTP REST Client or MQTT client) from remote web server over Internet and send text to that particular device (instead of broadcasting message ...
0 votes
0 answers
76 views

What Kinda of Trigger to Use for a System with Two Raspberry-Pi's

I have a system like the image shows. Now instead of it being connected with an Ethernet cable, it is going to be wireless. The SBC's represent Raspberry Pi's. SBC0 reads the data all the time and is ...
1 vote
1 answer
58 views

Problems with smart plugs going into "not responding" state

I have some smart plugs that I recently installed at my employer's office to deal with some remote-management issues we were having. I used two different brands (the GE one and the Belkin/WeMo one). ...
0 votes
0 answers
273 views

ESP32 or Other as DHCP AP / Router

I have a number of IoT devices that need to be able to connect to a central device. The ideal solution would be a sort-of homegrown router that uses an ESP32 or other solution that can operate as an ...
3 votes
2 answers
104 views

How to use SSH server on a remote device and overcome routing issues

I am designing an embedded Linux device that acts as a gateway for sensor data. In some cases this device will use a back-haul that I don't control (e.g. customer supplied cell or cable modem). I ...
9 votes
2 answers
1k views

SIM5320 MQTT TCP connection closing unexpectedly after time

I have been working on an MQTT protocol using the SIM5320. I am familiar with the AT command documentation, and have a working implementation with an Arduino. Firstly, I open a network socket with AT+...
10 votes
3 answers
10k views

How can I interface a LoraWan network with MQTT?

I have been working on a project which involves creating a LoraWan network using: Dragino lg01 as a Gateway. An Arduino Uno and a Dragino Lora shield with a simple LM35 Temperature sensor As for the ...
0 votes
0 answers
49 views

Mini weather station project not working

I have been trying to do this project for 2 weeks. The project is about mini weather station. It uses esp8266, DHT11 sensor,BMP180 sensor and FC 37 rain sensor. I have taken reference from the ...
3 votes
1 answer
128 views

Windows IOT cmd - Delete unplugged (hidden) Ethernet adapters

In Windows IOT - is there an option via command line to delete unplugged (hidden) Ethernet adapters? My issue is, when I am plug in an USB-TO-ETHERNET device adapter, it is have the name, lets say, "...
4 votes
0 answers
263 views

Monitor Eufy Homebase from iPhone Apple Home?

I have a Eufy Homebase 2 with 6 EufyCam 2C and a wired doorbell connected. The Homebase is setup as a “room” in Apple HomeKit. The Homebase is Ethernet connected to Xfinity new router, with wifi ...
5 votes
1 answer
113 views

Do I need different certificates for every thing?

I'm learning AWS and I created a new thing with the required certificates to access it via MQTT: root-CA.crt .private.key .cert.pem If I'm not wrong the root-CA.crt file will be the same for all the ...
3 votes
1 answer
98 views

Board to act as a hotspot and connect to Internet

Please excuse the very vague title, I had no idea how to condense my question into a title. Unit A - ESP32 Unit B - what I am looking for HOME_WIFI - The wifi network broadcasted within my home. ...
5 votes
1 answer
253 views

Can you intercept outgoing messages from devices on your LAN?

Many IoT systems have 3rd-party APIs people have reverse-engineered so they can add custom integrations, but these all work by impersonating the app, receiving updates from the server. If I'm on my ...
-6 votes
1 answer
60 views

Why we can't get as fast internet speed as NASA? [closed]

Some months ago I came to know that NASA has the fastest internet on the planet (with obvious reasons). But, my point is not that • I want to know why we commoners can't have such speed in our ...
1 vote
1 answer
60 views

How IoT device in my local network is controlled from other networks? [duplicate]

I have some WIFI bulb from Xiaomi/Philips. It is controlled using Mi Home app. I can control it (turn on/off) both when I am in the same network as the bulb or when I'm in a completely different place,...
2 votes
0 answers
58 views

UL-certified WiFi Wall Switch

I'm looking for a UL-certified WiFi wall switch for programming network effects in Python. UL-certified Wall-mounted Mains-powered 2+ physical switches Python-programmable. I want to program some ...
15 votes
2 answers
4k views

How can a device get the SSID and Password of my Network without WPS?

I'm studying ways to make an IoT device access an user´s wifi network. I know about the WPS way, where the device 'broadcast' a signal and the router, after being commanded to listen, 'receive' it and ...
27 votes
7 answers
4k views

Could a blockchain really prevent malware in the Internet of Things?

This article claims that using a blockchain-based security system for an IoT network would prevent some types of attacks: Blockchain technology may help offer an answer. Gada observes that blockchain ...