Is it possible protect subdomain with username and password?
Yes. You can do it with the Htaccess and Htpassword files for the Apache server, or the easiest way (which I recommend) is to use what DreamHost has already set up for every account on shared hosting:
Web Pannel > Htaccess/WebDav
Tnx for answer when go to Web Pannel > Htaccess/WebDav and click on my subdomain I get https://ibb.co/c1Ssz1X Is that?
You choose the account, then choose the directory that you want to password protect. This directory must already exist.
If you are still confused how to do this, look it up in the Knowledgebase:
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