Any way to setup an https connection with Fedora 33 with ISP that blocks ports 80 and 443??

[Michael D. Setzer II]

For a long time I've run my web server with no problem 
on port 8081 with my ISP. 
Have noticed that browsers are moving to want to only 
use https or secure connections.
Have tired a few options but don't work.
Created one setup with self-signed option, but when used 
it it came back with error about it being self-signed?
Just tried and option using certbot, but it requires access 
on port 80?? Asked on there forum, and got a reponse 
that they don't work with that. They mentioned another 
option that works if port 443 is opened, but just checked 
that also seems to be block.

Thanks.

[Samuel Sieb]

On 2021-05-09 8:25 p.m., Michael D. Setzer II via users wrote:
> For a long time I've run my web server with no problem
> on port 8081 with my ISP.
> Have noticed that browsers are moving to want to only
> use https or secure connections.
> Have tired a few options but don't work.
> Created one setup with self-signed option, but when used
> it it came back with error about it being self-signed?
> Just tried and option using certbot, but it requires access
> on port 80?? Asked on there forum, and got a reponse
> that they don't work with that. They mentioned another
> option that works if port 443 is opened, but just checked
> that also seems to be block.

You can use certbot with a DNS challenge.  There are various certbot-dns 
plugins available via dnf depending on which DNS provider you have.  If 
none of those apply, then you can use the manual option.
https://certbot.eff.org/docs/using.html#dns-plugins