ESP8266 as MQTT Broker | Setup Secure MQTT Broker in NodeMCU ESP8266 using sMQTTBroker Library

3 months ago

This video is about how to setup secure MQTT broker in NodeMCU ESP8266 board using sMQTTBroker Library with username and password authentication.

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Transcript

00:00Hi everyone and welcome. In the previous video we have covered that how to set up

00:06basic MQTT broker in NodeMCU using SMQTT broker library. So that was very basic

00:13MQTT broker implementation in the NodeMCU without any security or you can

00:17say without any username and password. Okay so any client okay any MQTT client

00:22can directly connect with that MQTT broker without any security but we want

00:27a security in our broker without any username and password no client should

00:32able to connect with our MQTT broker then how we can implement it. Okay so

00:36that thing we are going to cover in this video. So this is the topic for this

00:40video that how to set up secure MQTT broker in the NodeMCU using SMQTT

00:46broker library with username and password authentication. So until and

00:50unless you are not providing correct username and password you won't be able

00:54to connect with NodeMCU MQTT broker. So let's see how you can implement it. So

01:00here I have my entire code okay so here is our secure ESP8266 MQTT broker

01:07code I'm going to provide it okay after this video so you can directly use it.

01:11Now here is our entire code so you have to change few things as per your

01:18requirement in this code. So first thing is your MQTT connection username and

01:23password so whenever you try to connect with your NodeMCU MQTT broker what

01:28username and password you want to set that you have to specify here. So I have

01:32set my MQTT client username admin and MQTT client password password okay just

01:37for the demonstration purpose and then after you have to change another thing

01:41which is your Wi-Fi SSID and password so on which Wi-Fi connection you are going

01:47to connect your ESP8266 or NodeMCU board that you have to specify here and

01:53the one more thing you have to specify as per your requirement is the MQTT

01:57port so on which TCP port you want to start your MQTT broker so that you have

02:02to specify here. So totally you have to modify five things as per your

02:06requirement first two things are MQTT connection username and password okay

02:12third and fourth is your Wi-Fi SSID and password and the fifth is MQTT broker

02:17port number. So once you modify everything as per your requirement then

02:22you can directly upload this code into your NodeMCU board. So here is my NodeMCU

02:27board connected with my system I am going to upload this sketch into my

02:31NodeMCU board okay

02:35you

02:39okay we have successfully uploaded the code and here we have the IP address of

02:44our NodeMCU board. Now we can use this IP address to connect with our NodeMCU

02:48MQTT broker. So again I am going to open MQTT Explorer which is MQTT client

02:55software and I'm going to select the ESP8266 connection and I'll try to

03:00connect okay here you can see connection refused because of bad username or

03:05password now we have already specified the username and password here to

03:09connect with our MQTT broker so without any username and password you won't be

03:13able to connect with our MQTT broker so that is what we want right so I'm going

03:17to copy the username from here and I'm going to paste it here and we will copy

03:21the password and we will paste it here and then after we will try to connect

03:26and we are successfully connected okay so if you do not provide any username or

03:31password then you won't be able to connect with our NodeMCU MQTT broker

03:35and if you provide wrong username and password okay in this scenario username

03:40is correct but password is wrong so still you are not able to connect you

03:44can see bad username and password okay and if you provide correct username and

03:50password then only you will be able to connect with NodeMCU MQTT broker now

03:54again I am going to open another MQTT client which is again MQTT Explorer I

03:59will select the NodeMCU connection okay the password is password and the

04:04username is admin and then we will try to connect okay here you can see

04:09connection refused identify rejected because let me show you so if you go to

04:16the advanced here also if you go to the advanced then the client ID for this two

04:21client is same okay so you have to change the client ID then only the

04:25second client will be able to connect with your ESP8266 MQTT broker so I'm

04:31going to add some random number here okay and then we will go back and then

04:35we will try to connect and we are connected so if your client IDs are same

04:40then you won't be able to connect with your NodeMCU MQTT broker okay so that

04:45thing also you have to take care of now we can use some test topic and we can

04:49publish some test data okay and in the second client we have received that

04:54also we can publish some test data from the second client and here we have okay

05:00so it is working absolutely fine with security so I hope this thing is clear

05:06that how you can set up your secure MQTT broker in the NodeMCU so here is the

05:11code I will provide the code okay maybe you will get that into our GitHub

05:16repository or I'll provide the code into our website so you can directly

05:20copy from our website so I hope everything is clear that how you can set

05:25up your secure MQTT broker in the NodeMCU and if you still have any

05:29questions or any doubt then you can always ping me on telegram Instagram

05:32whatsapp anywhere okay all the social media link is available on our website

05:36also you can send me a mail also you can comment on this video now let's meet in

05:42the next video till then take care goodbye and thank you

ESP8266 as MQTT Broker | Setup Secure MQTT Broker in NodeMCU ESP8266 using sMQTTBroker Library |

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