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.
108
questions
1
vote
1answer
37 views
how to network a receiver to a public server
My company use sensors on doors to track activity and access control on the doors for many sites throughout the UK. We need to log this activity by sending UDP packets from the sensor's receiver to ...
1
vote
0answers
16 views
Receiving Data from MacBAT 5 in python
I need to be able to communicate with a PLUM-EVC, MacBat 5 from a remote server using Python. I have been given parameters, IP and Port which are required to get the data from EVC.
I am completely ...
1
vote
0answers
28 views
ESP8266 and MQTT not working with new router [closed]
Got a new router from the ISP and my ESP8266 NodeMCUs are causing problems, they need very long to connect to WiFi (3-4 mins), which wouldn't be that big of a problem, but they also don't connect to ...
0
votes
0answers
38 views
Access home security system through other network?
I'm looking to connect my phone to my building security cameras and gates.
I've been using the same app I use on my wall-mounted tablet and managed to set all the settings correctly.
The only problem ...
3
votes
2answers
96 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 ...
6
votes
3answers
651 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 ...
4
votes
2answers
40 views
WLAN Hotspot Internet sharing possibilities?
I figure this is the best place to ask.
Many IOT devices need to be connected to a network, and sometimes require Internet access, but not 100% of the time.
Usually it's fine to just connect them to ...
2
votes
0answers
31 views
Industrial programmable radio transceiver
(I hope this kind of questions are tolerated here. Otherwise, please say it in the comment and I will delete the question)
I have to create a wireless network of over 200 devices, placed in the same ...
2
votes
1answer
129 views
What's the size in bytes of a single, TLS-encrypted MQTT message?
To determine the use of bandwidth usage, I need to know the exact size of a MQTT message sent from a device to a server.
This message looks something like this:
client.publish(topic="foo", payload="...
1
vote
1answer
42 views
Remote sensor cloud connection
i'm just starting out in Arduino, IoT etc; I was given the Elgoo Uno R3 Arduino starter kit at the weekend and i've been trying to soak it up.
I would like to make a number of sensors for my van, ...
0
votes
1answer
30 views
Difference between Network, Communication, and Messaging protocol
My understanding is network protocols are BLE, Wifi, ZIgbee, etc. and messaging protocols are http, mqtt, etc. So my questions are:
Is my understanding so far correct?
Are network and communication ...
0
votes
1answer
67 views
MQTT Client behind router and Port forwarding for subscription of Client [closed]
I use MQTT (Mosquitto) and several ESP8266 for sensoring issues.
I want that the clients also can "subsribe" to trigger actions on the clients.
The MQTT Server is placed in a VLAN of my main router. ...
1
vote
1answer
50 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[] ...
2
votes
1answer
35 views
Is Google home an IoT Device or a WSN base station?
They say Google home is an IoT device but it has the ability to control other devices like lights, Air conditioners, etc. (in smart homes) which is more like a base station in the Wireless sensor ...
1
vote
1answer
48 views
Does server running on local host constitute IoT? [closed]
I have created a network, using mobile hotspot (without internet connectivity), between microcontroller and pc.(intranetwork) The designed server right now works on the local host. Will this be ...
2
votes
2answers
140 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
45 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
57 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
50 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
156 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
40 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
502 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
80 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
47 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
723 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
58 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
59 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
54 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
56 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
67 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
186 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
116 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
133 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
514 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
99 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
58 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
128 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
292 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
93 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
159 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 ...
12
votes
2answers
1k 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
311 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
263 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
688 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
97 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
504 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....
9
votes
1answer
728 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
102 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
404 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
170 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 ...
