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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.

2
votes
2answers
91 views

Stream Raspberry Pi camera to Android/iOS over internet without port forwarding? [closed]

Problem : I want make live stream from my camera attached to Raspberry pi 3 b+, which is connected to home WiFi. Streaming should be over internet. So that any client like Android/ iOS can stream it ...
3
votes
1answer
38 views

Cellular Base station from ethernet

Does anyone know of any devices that can take an ethernet connection and turn it into 4g to act as a base station? I am trying to find a solution to test data connection for a significant amount of ...
1
vote
1answer
49 views

How to implement out-of-home when developing an IOT device?

I have a Raspberry Pi that tells you through web sockets and a sensor the amount of electricity you are spending in real time. I created an iPhone app as a front-end that basically just paints the ...
1
vote
1answer
43 views

Can portable routers be connected to power supply for months without damaging their batterry?

I am looking for a solution to provide internet connectivity to my iot device through a router which would not be affected by power failures (of no more than 3 hours). The options that I can see are ...
7
votes
4answers
134 views

What network technology can host 1000s of local IoT devices?

I'm analysing the technologies for an IoT device that would need to be installed in a commercial environment. The requirement is to install thousands (or maybe even tens of thousands) of small sensors/...
2
votes
1answer
38 views

What's the formal name of this network configuration?

I'm researching a network inside another that can't access the internet but can be accessed by the internet. I've seen terms like cascading and heard something like a "v" configuration but neither ...
2
votes
0answers
145 views

Simple NAT implementation on ESP32

I have an ESP32 wroom32 that has WiFi internally and an ethernet port. I want to be able to connect my phone to the WiFi and access a webserver running on the ethernet port. Schematically this looks ...
1
vote
1answer
55 views

How Smart Home devices communication works

I have a big doubt that I'm not able to solve. Basically, I want to understand how the smart device that I have in my home communicate with their servers, or better, how their servers can call its ...
0
votes
1answer
42 views

How to setup internet in neighbourhood, completely disconnected from regular internet? [closed]

I read in past (few years back), there is this device which can be installed, like a server and delivers access to websites in certain radius. It also uses WiFi and repeaters to provide access. This ...
4
votes
2answers
272 views

Using Raspberry Pi as a Lora Node for a TTN setup

I already have a LoRa gateway that I made using a NodeMcu with ESP8266 and now I want to send data from a Raspberry Pi 3 through that gateway to the TTN. The first thing that I did was to connect ...
4
votes
1answer
48 views

How to access internet-connected home when phone moves between LAN Wi-Fi and Cellular?

My 20-year-old home control computer is on my LAN and has incoming port forwards for remote access. My iPhone can access it either way, but I have to stop and think which connection it is using, so ...
4
votes
0answers
52 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 ...
3
votes
1answer
47 views

Connect to I/O remote through VPN router

I have two I/O remotes hooked up to a router running as an OpenVPN client. I am trying to connect to the devices from remote, but it is not working. The VPN connection works fine, and I can access ...
3
votes
1answer
50 views

Is static IP needed if using VPN to connect to IoT devices?

I have an IoT solution that I need to connect to from remote. I don't have access to open ports nor set static IPs on-site where the IoT devices will be hosted so I was looking for other solutions. ...
2
votes
0answers
55 views

Connect IoT devices to AWS

I have a Moxa I/O Remote connected to a Raspberry Pi running some scripts through pymodbus. I am using MQTT to publish & receive changes/requests in the I/O remote to a web service. The idea is ...
8
votes
2answers
137 views

How can I use End-to-end encryption in sensors network?

I have been reading about XMPP and its extensions. One of them called (XEP-xxxx: Sensor-Over-XMPP) which is really interesting. I have read also about another XMPP extension which is OMEMO protocol ...
4
votes
1answer
87 views

Efficient Server- and Protocol structure for raspberry, smartphone and 3rd-party-device network

I am new to this forum and this field. I am looking forward to good criticism and tutorials/links/instructing suggestions to build a nice system with as less effort as possible while achieving all ...
4
votes
1answer
83 views

Remote com (serial) connection through cellular IoT

We need to be able to make a com (serial) connection remotely off site from PLC type device. We have completed a POC for sending some signals to Azure IoT utilizing a Siemens IoT2020 running linux ...
4
votes
1answer
314 views

How to convert messages between CoAP and MQTT protocols?

I am a master student and my topic is about making protocol conversion among IoT communication protocols for example between CoAP and MQTT in order to make the devices that use MQTT protocol to ...
6
votes
1answer
91 views

Could not ping ESP8266 Wifi module connected to an Arduino

I have been working with a water flow counter which sends data over wifi. I'm using an ESP8266 wifi module. Everything is correctly connected and I've gotten to the point where it's correctly ...
0
votes
2answers
49 views

Sending Data via a Local Network [closed]

I'm sure there is a very easy answer to this but I'm struggling to search for the answer on Google due to missing crucial technical knowledge and terminology. If I have two phones that are 1km ...
5
votes
1answer
114 views

How to connect 1 million devices over Layer 3 IP-protocol

I have edited the question after reading about MAC-to-MAC protocol (RMII/MII) here: https://community.nxp.com/thread/316374. My IOT device looks like a USB stick. I am building a datacenter for 1 ...
8
votes
2answers
183 views

Embedded C—check internet connection

Is there any way to check if actually my embedded device has a working connection (i.e. can reach the WAN)? My device has no RTOS, so I cannot rely on OS functionalities like ping. I can see that the ...
6
votes
1answer
88 views

Synchronized data between Hardware's storage and Server's database

I saw in China's bus system, that there are devices inside the bus which can handle e-payments. The process is something like this: Passengers come in the bus. Passengers use a QR-code in their ...
5
votes
0answers
114 views

When using LTE-M's eDRX mode, is the TCP connection still open?

We currently have an IoT device, that connect to our servers using a raw TCP connection over 2G, and from times to times the device send a "keep-alive"-ish message , as we've seen it's consume less ...
11
votes
1answer
740 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 ...
3
votes
2answers
244 views

Raspberry Pi outdoor connectivity for large farm [closed]

I have several raspberry pi zeros connected to agricultural sensors in a large farm(1500+ acres). What is my best solution for getting the agricultural data from them wirelessly? I want to get the ...
7
votes
1answer
214 views

What do ACK, SB, SF, LG, RES mean in Sigfox network?

I found these abbreviations in an official documentation and I don't know what they are stand for. Can you explain it to me please? I know that it is basic question.
7
votes
1answer
559 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+...
6
votes
0answers
84 views

How to make node select the least preferable parent as preferred parent in RPL protocol?

I would like to simulate in Cooja the following: one of the nodes selects the worst parent that provides the worst routing information as its preferred parent i.e. it breaks the Objective Function ...
7
votes
3answers
410 views

How can I push data from car-mounted microcontrollers to a remote server?

Firstly, I'm a newbie in the IoT field. Hardware parts are quite new to me. I want to make a small project. That is creating a box attached into a car that can keep track its location and temperature....
8
votes
1answer
579 views

Is there any way to access local server from outside without port forwarding? [duplicate]

Situation I need to access an ESP8266's Wi-Fi local server from outside. Like Xiaomi Yeelight (YeeLight Introduction Web Site Link) or LOHAS LED (LOHAS LED Web Site), I have to control it from ...
6
votes
1answer
98 views

Protocol for over 300 metres and minimum of 20 kbytes datarate?

We are trying to choose the most suitable connection protocol for wearable devices, with the following constraints: 300 - 500 devices will simultaneously connect About 1 km2 site area—coverage is ...
6
votes
1answer
346 views

SSH into an Orange Pi connected to the internet via 2G GSM module

I wanted to SSH into my Orange Pi remotely. It will be connected to the Internet via a 2G GSM module. How should I go about it? Usually it's ssh username@ip address. The setup isn't implemented yet so ...
1
vote
2answers
154 views

Build a “Smart Home”—Lack of Security [closed]

I am preparing to make my home smarter and for some reasons I am not happy. I read several articles about secure the smart home, but there was no clear solution. I don't know why, but it seems that ...
10
votes
2answers
994 views

Standards for non-Internet-connected WiFi devices?

I'm planning to do a lot of home automation. For that I will host a private isolated WiFi network to which all my devices will be connected to. The devices will be simple lights, RGB LED strips (...
5
votes
0answers
74 views

How will network bootstrapping work for headless embedded-SIM IoT devices?

Is there something akin to the Wi-Fi Alliance DPP (Device Provisioning Protocol) in the world of embedded SIM?1 If so, it would be really nice to get an outline of how it would work at a high level. ...
6
votes
0answers
597 views

Mobile network on Android Things SoM?

I want to build an Android Things device that can report its location via mobile network (4G LTE, LTE-M if possible, 3G & 2G). How can I plug such a mobile modem and connect it properly down to ...
7
votes
1answer
114 views

Does 6LowPAN stack helps in requirement of gateway?

After 6LowPAN stack. Every node can have the different internet IPv6 address. So, Is 6LOWPAN stack is present in GATEWAY or sensor mote as well? In a case of sensor mote, is a GATEWAY required? Can't ...
10
votes
1answer
142 views

Does CoAP depend on IEEE 802.15.4?

In the CoAP specification, it is implied that IEEE 802.15.4 can be used in conjunction with CoAP. Is this a requirement or can CoAP also be used with other OSI layer 1, 2 protocols such as IEEE 802.11,...
9
votes
2answers
1k 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 API ...
9
votes
1answer
98 views

How can I synchronise data between devices, avoiding loss of messages and duplication?

I have an IoT network of devices sending data to each other, with data being stored in a database. If I have a device sending 10 packets/API requests in sequence, sometimes only a few reach their ...
11
votes
1answer
629 views

Alexa cannot identify Fauxmo and ESP8266

I'm trying to control an ESP8266 using fauxmo. The programme compiles correctly, but when I run the Alexa app to find devices the ESP doesn't show up. The ESP is definitely connected to my home ...
7
votes
2answers
135 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 ...
7
votes
1answer
7k views

What ports does an LG TV open?

I'm seeing some unexpected ports open on an LG TV model 47LN5750-UH, serial 311MXTC1E969. Below is the result from a nmap scan. Nmap scan report for 172.16.4.4 Host is up (0.00021s latency). Not ...
5
votes
1answer
374 views

How to find remote thing's IP address?

I have a physically remote thing. It's on someone else's network so I can't get a static IP address for it. What is the best way to track its IP address? I can imagine just publishing a "heartbeat" ...
6
votes
2answers
494 views

Web admin panel for embedded Linux IoT devices

Devices like routers always have a web-based administrative interface that allows you to configure many aspects of the device from a web browser. Obviously, this is essentially a web server running on ...
8
votes
2answers
2k views

How to write/post files to website server through ESP 8266

I want to know if there is a way to send files to a website with sm ESP 8266 or any other IoT device. I intend that the IoT device will be the client. A PHP or scripting file on the website will act ...
8
votes
3answers
974 views

Communication Between Server and Raspberry Pi

I am working on my home automation project. I have a server on digital ocean. I want to put my php code on that server and that server will connect to my Raspberry Pi. How can I pass messages between ...
9
votes
3answers
2k views

How to access camera feed of Raspberry Pi out of a local broadband network?

BACKGROUND The current setup I have for the Raspberry Pi is: USB Webcam -> Raspberry Pi -> Netgear Router -> Local ISP -> Internet My ISP gives me a captive portal through which I can ...