But as I’ve mentioned several times, there are other things we need to talk about.
I will break it down so you under stand completely.
The URL you want to “secure” is:
http://etudiant.esprit.tn:8015/edt/
part #1 protocol = http
part #2 FQDN = etudiant.esprit.tn (not yet ready - will use temp name instead for now)
part #3 port = 8015
part #4 path = /edt/
Part #1 is linked to part #3.
If you are using HTTP on port 8015 then you can’t use HTTPS (on that same port).
You will have to use another port or switch 8015 from HTTP only to HTTPS only (no more HTTP on 8015).
[choose one]
If you are going to use another port (let’s call it 8016 until you decide), you will have to ensure the firewall/NAT router forwards port 8016 to your IIS server.
Part #2 needs to be dealt with ASAP
Part #4 plays no roll in this problem.
In addition, LE will need port 80 for HTTP authentication challenge.
That means port 80 needs to be used for HTTP - the firewall/NAT router needs to forward port 80 to your IIS server.