How to remove the SSL configured URL domain temporarily
I have three configured ssl URLs for my domain like abcd.com, www.abcd.com & alpha.abcd.com. Everything works fine and all three urls are encrypted using lets encrypt. Now I would like temporarily block the access to abcd.com and www.abcd.com. Just keep alpha.abcd.com. How do I achieve this.
I have followed this tutorial for configuring SSL https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-14-04
Please let me know. Thank you in advance.