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.
3
votes
1answer
47 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 ...
2
votes
1answer
55 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 ...
5
votes
1answer
68 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
42 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 ...
4
votes
1answer
94 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
100 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 ...
4
votes
1answer
79 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 ...
4
votes
0answers
55 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
159 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
126 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 ...
6
votes
1answer
132 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.
6
votes
1answer
318 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+...
5
votes
0answers
62 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 ...
6
votes
3answers
192 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....
7
votes
1answer
361 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
88 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
231 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
136 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
513 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
55 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
429 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 ...
6
votes
1answer
87 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 ...
9
votes
1answer
100 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
738 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 ...
7
votes
1answer
90 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 ...
9
votes
1answer
524 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 ...
6
votes
2answers
127 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 ...
5
votes
1answer
3k 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
222 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
350 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 ...
6
votes
1answer
884 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
608 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 ...
8
votes
3answers
1k 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 ...
2
votes
1answer
267 views
Connect Onion Omega2 to static ethernet [closed]
I can't get my Onion Omega2 to connect to my ethernet via a static IP address and two DNS addresses. To connect my PC, I have to set the following:
IP address: 82.149.xxx.xxx
subnet mask: 255.255.255....
10
votes
3answers
2k views
How to protect Raspberry Pi from attack in an IoT setup connected through a Broadband network?
The Setup:
I have a Raspberry Pi as the master node which is connected to the internet through a broadband connection, the raspberry pi connects several sensors and other microcontrollers. The Pi is ...
6
votes
1answer
177 views
How can I make hostnames accessible?
I am using the Sonoff-Tasmota firmware to configure ESP-8266 devices for my home automation system. These devices log onto the WiFi network and obtain IP addresses via DHCP. The problem is that ...
8
votes
1answer
266 views
Protocol for configuring IoT device settings
MQTT is widely used in IoT when it comes to exchanging application data between the end device and the host service. The publish-subscribe model makes it easy to use: no handshaking, negotiating etc (...
11
votes
1answer
240 views
Creating a private subnet by assigning IP's through DHCP
I am using an esp8266 wifi module if that matters. What I intend to do is connect the module to my home router and have other modules connect to this module and form a second layer, and to this second ...
12
votes
5answers
4k views
Do all Internet connected Things use the same “Application - TCP - IP - Hardware” stack to communicate?
I am not particularly internet savvy, and IoT technologies are especially confusing for me. I was reading this Stanford white paper on internet structure. In Diagram 2, it shows a representation of ...
6
votes
2answers
2k views
Does Arlo Pro communicate via WiFi?
I just setup an Arlo Pro security camera (made by Netgear) and found it interesting that the system didn't explicitly have me configure a WiFi connection. The setup process consists of hard-wiring the ...
11
votes
2answers
548 views
Are there any applications where blockchain is used with IoT?
Since the emergence of these two Technologies, it can be a near future possibility that blockchain and other forms of crypto-currency will be used more frequently.
According to this article:
The ...
14
votes
2answers
552 views
How do consumer IoT devices typically enable Internet connection?
As far as I know there are 2 general methods for enabling remote (Internet, not LAN) access to IoT devices:
Via a server that the device polls periodically (e.g. MQTT)
Direct remote access
I'm ...
4
votes
1answer
63 views
When network provisioning happens through a hotspot (for a headless device), how can I notify the user of a failure when switching to station mode?
When a user connects to the hotspot of a headless device for configuring Wi-Fi credentials for device provisioning and if it fails to connect to Wi-Fi once Wi-Fi credentials are saved, the user doesn'...
7
votes
0answers
134 views
How can I free MEMB memory in Contiki programs?
In Contiki I declared a linked list like this:
MEMB(recv_memb, struct record, MAX_RECORD);
LIST(recv_list);
After using the linked list I free the allocated memory like this:
for(n = list_head(...
7
votes
1answer
3k 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 ...
8
votes
1answer
816 views
What is the typical network topology for an IoT network?
I see several questions asking about details of an IoT network, including this one about port forwarding for example. I think it would be useful to ask about what might be considered the typical ...
12
votes
5answers
2k 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 ...
6
votes
2answers
371 views
Connect IoT devices directly to Wi-Fi or through a VLAN?
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 ...
17
votes
3answers
2k views
What do I need to create my own personal cloud for IoT devices?
This is a subject I have been thinking of for a while, especially because the "IoT" concept has been floating around a lot lately.
I will start with what I mean when I say "IoT". I know that the term ...
9
votes
1answer
823 views
Configuring LoraWan Gateway
I'm trying to build a LoRaWan Network using a sensor programmable with Arduino and a Dragino Lora Shield.
I have found many solutions for creating a gateway, including an Raspberry Pi connected with ...
