Timeout during connect (likely firewall problem)

[chrysa95]

Hello, I try this in command line sudo certbot certonly --standalone --standalone-supported-challenges http-01 -d cmob2.hopto.org and i am getting the following errors:

• The following errors were reported by the server:

  Domain: cmob2.hopto.org Type: connection Detail: Fetching http://cmob.hopto.org/.well-known/acme-challenge/mVPKxOtuNpdtQjpzygQu9lajiy1DAt4ptnwJaQuKwXg: Timeout during connect (likely firewall problem)

  To fix these errors, please make sure that your domain name was entered correctly and the DNS A/AAAA record(s) for that domain contain(s) the right IP address. Additionally, please check that your computer has a publicly routable IP address and that no firewalls are preventing the server from communicating with the client. If you're using the webroot plugin, you should also verify that you are serving files from the webroot path you provided.

Any possible answers?

[karlp]

What does this have to do with mosquitto? Mosquitto isn't a webserver, it certainly doesn't support http based challenges, though with the libwebsockets and webroot serving you could possibly convince it to behave as one.