Creating Certificate with Domain Name Hosted on China

[senvichet]

Hello,
I am configuring Let’s Encrypt by using https://github.com/ebekker/ACMESharp.
The problem is my domain is hosting on China, so port 80 & 443 are blocked. I am considering to do validation with dns-01 manual method. This method requires creating a txt record. I am wondering if this method really works and I can generate certificate for use on other ports. Another thing, I would like to know is whether Let’s Encrypt is compatible with Oray.com?

My domain provider is:
https://www.oray.com

My domain is: N/A

I ran this command: Complete-ACMEChallenge -IdentifierRef clevylinksnet-180226 -ChallengeType dns-01 -Handler manual

It produced this output:

My web server is (include version): Internet Information Service version 8.5

The operating system my web server runs on is (include version): Windows Server 2012 R2 Standard Edition 64bit

My hosting provider, if applicable, is: my own dedicated servers

I can login to a root shell on my machine (yes or no, or I don’t know): yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel): no

[_az]

As long as you can manually create a TXT record for your domain using the oray.com DNS control panel, then yes, you can use the dns-01 challenge.

Once you have a certificate, you can use it for any service you want, on any port, provided that it comes under the permitted usages for the certificate (TLS Server Authentication, TLS Client Authentication).