ESP32 as MQTT Broker | How to Setup Secure MQTT Broker in ESP32 using PicoMQTT Library with Username and Password Authentication

2 months ago

Training Index: https://fusion-automate.super.site/1f38090ec617464884074d74a9561856

➡️How to Setup Basic MQTT Broker in ESP32 using PicoMQTT Library: https://youtu.be/tc8zKb6f3TU
➡️How to Setup MQTT Broker with Custom TCP Port in ESP32 using PicoMQTT Library: https://youtu.be/hf7KY0_bu-4
➡️How to Setup Secure MQTT Broker in ESP32 using PicoMQTT Library with Username and Password Authentication: https://youtu.be/iUi_xfFlSug

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Transcript

00:00Hi everyone and welcome in the previous couple of videos we have covered that

00:06how to set up MQTT broker in the ESP 32 board okay so instead of any other MQTT

00:12broker like Mosquito, HiveMQ, EMQX okay or NanoMQ you can use your ESP 32

00:19board as an MQTT broker so we have covered that how to set up basic MQTT

00:23broker in the ESP 32 using Pico MQTT library also we have covered that how to

00:28set up basic MQTT broker with custom TCP port in ESP 32 using Pico MQTT

00:34library now in both of that video our ESP 32 MQTT broker was not secure okay

00:41so we can connect with that ESP 32 broker without any security or you can

00:46say without any username and password so if you want to make your own secure

00:51broker with the ESP 32 then also you can do it with the Pico MQTT library so

00:56that thing we are going to cover in this video so basically we will see how

01:00to set up secure MQTT broker in ESP 32 using Pico MQTT library so until and

01:06unless you provide the username and password then only it will connect

01:10otherwise it won't connect to that MQTT broker so that kind of security is

01:15possible in the ESP 32 MQTT broker so let's see how you can implement it so I

01:21have my ESP 32 board connected with my system and here is the Arduino IDE and

01:27here is the connection diagram so whatever clients you have those are

01:31going to connect with our central ESP 32 MQTT broker and in the previous videos

01:36we don't have any security for this broker so any client can use the IP

01:40address and port number and they can connect with our ESP 32 MQTT broker but

01:44we don't want to do that we want the secure broker so we will implement the

01:49security in the ESP 32 broker in this video okay so let's see how you can do

01:54that so I'm going to the examples in the Arduino IDE okay and we will find the

02:01folder which is Pico MQTT here you can see Pico MQTT and here you have the

02:06example which is server authentication okay so we want to create our MQTT

02:12broker in the ESP 32 with the authentication so I'm going to select

02:16this example

02:18and here is our example so you have to change few things in this example so

02:24first of all you have to change your Wi-Fi SSID so let me change it and then

02:29after you have to change the Wi-Fi password why we have to change the Wi-Fi

02:34SSID and the Wi-Fi password because our ESP 32 is going to connect with the Wi-Fi

02:39okay and our Python client or any other MQTT client is also going to connect

02:43with the same Wi-Fi and in the local area network all those client can

02:47exchange the data with each other and our ESP 32 will act as a MQTT broker in

02:53our local area network so that's why we have to first connect our ESP 32 with

02:57the Wi-Fi and then after in the code here you can see the define username and

03:04the password so they have defined two username in this example the first

03:08username is Alice and the password for that user is secret and the second

03:13username is Bob and the password for that user Bob is password so if you

03:18provide any other username and password apart from this then you won't be able

03:22to connect with our ESP 32 broker so I'm going to leave this things as it is okay

03:27I'm going to leave this username and password as it is and we will directly

03:32upload this code or you can say we will directly upload this sketch into our ESP

03:3632 board so my board is connected on the com file I'm going to hit the upload

03:42button and rest of the things are same as per the previous video so there is no

03:49change in this void setup and the void loop code

03:53you

04:10okay so we have successfully uploaded this sketch into our ESP 32 board now I'm

04:15going to open the serial monitor here and I'm going to press reset button on

04:19my ESP 32 board okay here you can see trying to connect with my Wi-Fi and Wi-Fi

04:25connected and here is the IP address of our ESP 32 MQTT broker now I can open my

04:31MQTT client software which is MQTT Explorer to connect with our ESP 32

04:37MQTT broker and here is the IP address okay 192.168.1.11 and here the broker is

04:45running on the default port okay which is 1883 so we can press on connect okay

04:51you can see connection refused not authorized because we have set up the

04:56username and password in this connection so if you do not provide this username

05:00and password you won't be able to connect with this ESP 32 MQTT broker so

05:05you must have to provide this username and password so I'm going to paste the

05:09username here and I'm going to paste the password here and then we will try to

05:15connect you can see we are connected okay and if you don't provide any

05:20password or if you provide any other password suppose secret 1 2 3 and actual

05:25password is secret then also it won't able to connect bad username and

05:30password okay so let me change the password to the actual and then we will

05:35click on connect so we are connected now let me open another MQTT Explorer client

05:40and here I'm going to use the another username okay which is Bob and I will

05:48use another password which is password for the Bob user and then we will click

05:53on connect and we are connected so here is our both MQTT client okay which is

05:59connected to our ESP 32 broker now I can publish the data on my test topic okay

06:05and both of the user will have those data so both of your client will connect

06:11to that ESP 32 MQTT broker securely with username and password and both of the

06:16client will publish the data to any topic also they can subscribe to any

06:21topic and they can receive the data okay so this is how you can set up your

06:25secure ESP 32 MQTT broker so all you have to do is you just have to go to the

06:31examples okay in the Pico MQTT folder so where is the Pico yeah so here is a

06:38Pico MQTT folder and you have to use this example server authentication and

06:43once you load this example you have to change your Wi-Fi SSID here you have to

06:48provide your Wi-Fi password to connect your ESP 32 with your local area network

06:53and once your ESP 32 will connect with your local area network it will start

06:58serving as MQTT broker okay and here is the username and password to connect

07:04with that MQTT broker you can change the username okay you can change the

07:08password as per your requirement you can also create multiple user as per your

07:13requirement okay so I hope this thing is clear and if you still have any question

07:19or any confusion then you can always ping me on telegram Instagram whatsapp

07:22everywhere all the social media link is available here on our website okay so I

07:28hope everything is clear and now in the future videos we are going to cover this

07:33topic okay instead of Pico MQTT library we are going to use the embedded MQTT

07:37broker library to set up our ESP 32 MQTT broker and then after we will use

07:43SMQTT broker library to set up our ESP 32 as an MQTT broker okay so stay tuned

07:50for the future videos and if you have any question or any doubt then you know

07:53where to ask so we will meet you in the future videos till then take care goodbye

07:59and thank you

ESP32 as MQTT Broker | How to Setup Secure MQTT Broker in ESP32 using PicoMQTT Library with Username and Password Authentication |

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