How do I add more ESP8266 devices to my WiFi control system?

The situation is as follows : some time ago I made myself a remote control on the esp8266 via Wifi - I read the codes of the buttons on the remote and programmed the esp8266 so that I could switch programmes on the decoder using the infrared transmitter. This was due to the fact that I have a hdmi splitter connected to the decoder and in the bedroom I can't switch channels (remote control through the wall didn't work).

Following the blow, I decided to ip (local) esp8266 "put outside" (for testing) so I could operate the remote control outside the house. I configured a DDNS service (NO-IP) on the router and generally everything works fine.

Well, at this point a question arises. Because I would still like to add e.g. 2 esp8266 - one e.g. to read the room temperature and the other e.g. to control 433Mhz 230v switches.

Locally I would even be able to handle this - give each esp8266 a different local ip - and it would work locally. But what about in the case of "outdoor exposure" ? how to approach this? One esp8266 is to be the server ? this "exposed to the outside" and the other esp8266 are to be the clients ?

Can I ask for some hints ? help ? on the above topic ?

Greetings
Jakub

And one will not pull ? I do not see problems of numbers, pins, performance

I suppose the problem to glue the so-called "codes" of ready-made ?

Because cutting functionality into pieces (and then integrate) is always more difficult than on one

Implement "mediation" / communication can be done variously, the first thing that pops into my head is MQTT

This can of course be done on one ESP - only problem is that there are several ESPs which are in different locations (room, bedroom, etc - that is why there are several ESPs)
It is about the possibility over the Internet (outside the location) to turn on e.g. the light, read the temperature, lower the blinds.
On the Router I have only one ESP exposed "outside" and if it was on one ESP it would not be a problem - the problem is that there are several ESPs

Forward the ports on the router.
1 esp from outside on port 80 inside on port 80 access from outside two.je.i.p
2 esp from outside on port 8080 inside on port 80 access from outside two.je.i.p:8080
3 esp from outside on port 8081 inside on port 80 access from outside two.je.i.p:8081

tos18 wrote:

Redirect the ports on the router.
1 esp from outside on port 80 inside on port 80 access from outside two.je.i.p
2 esp from outside on port 8080 inside on port 80 access from outside two.je.i.p:8080
3 esp from outside on port 8081 inside on port 80 access from outside two.je.i.p:8081

Of course it can be done like this, only to each ESP there will be a separate http address (i.e. different port) e.g.:

domain.no-ip
domain.no-ip:8080
domain.no-ip:8081

And it won't all be at one address domain.no-ip - that's how I'd like to do it so that I can control/read temperature from one external address

Well, let's have one ESP as a server (collects data and issues html) and the rest of us connect to it, e.g. via UDP and send it data/receive commands.
https://robotzero.one/sending-data-esp8266-to-esp8266/

tos18 wrote:

Well, let's have one ESP as a server (collects data and puts out html) and the rest of us connect to it e.g. over UDP and send it data/receive commands.
https://robotzero.one/sending-data-esp8266-to-esp8266/

Hmm well I guess this will be a good solution to my problem I need to delve into the topic