How to disable SSLv3

One-stop resource on how to effectively disable SSLv3 in major web browsers as well as in web, mail and other servers that may still be using it.

Web browsers

Chrome and Chromium
Firefox
Safari
Internet Explorer
Opera

Web servers

Apache
IIS
Nginx
Lighttpd

Mail servers

Sendmail
Postfix
Dovecot
Courier

Other

Java
NodeJS
OpenVPN
Puppet
HAProxy

Opera

Opera 12 disabled SSLv3 support, so if you updated you should be safe.

If you are using Opera 12.17 or older:

  1. Press ctrl + f12
  2. Click the Advanced tab
  3. Click on Security on the left menu
  4. Click on Security protocols
  5. Uncheck Enable SSL 3
  6. Click OK

Credits

This page was compiled by Michele Spagnuolo.