Question

How to remove support for TLSv1.1 and TLSv1.2

I am completed stumped on this one. I have tried for months to figure out why SSLabs shows my domain as a B (still supporting these). I have researched and researched and cannot figure it out. There is NOTHING in my nginx folder. There is nothing in the let’s encrypt config. I have also searched Apache and can find nothing. I thought it might be that the server hadn’t been rebooted, but that just went through one and still there.

centos nginx apache let’s encrypt

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alexdo
Site Moderator
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• January 31, 2023

Hello @doughboy

Some time ago, I’ve created a similar mini tutorial here in our community about disabling old TLS versions which you can check here:

https://www.digitalocean.com/community/questions/disable-old-tls-versions-1-0-1-1-for-apache-nginx-on-ubuntu-18-04-or-centos-7

Hope that this helps!

KFSys
Site Moderator
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• January 31, 2023

Hi @doughboy,

To disable your TLSv1.1 and TLSv1.2 protocols, you need to remove them from Nginx. Go to your Droplet:

  1. cd /etc/nginx/

Once in the Nginx folder, you’ll need to remove the protocols from the files that usually have them - /etc/nginx/nginx.conf,/etc/nginx/sites-available/example.com.conf and from time to time in the /etc/letsencrypt/options-ssl-nginx.conf file.

Open them, find the ssl_protocols line and remove both TLSv1.1 and TLSv1.2.

Another way to go about would beto grep for ssl_protocols:

grep -ril 'ssl_protocol' /etc/nginx/*

Every file you get as a result, open it and see if there are ssl_protocls mentioned. Remove TLSv1.1 and TLSv1.2 from them.

Once done, restart Nginx:

service nginx restart

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