By default (fresh installation) of Windows Server 2012 R2, I saw that there are several windows firewall rules which contains ICMPv6-In and ICMPv6-Out.

Is it ok for us to turn off these firewall rules if we don't use IPv6?

1 Answer 1


You should really have IPv6 enabled and firewall on to be honest.

Here's a short article about it. I'm also not sure what you mean by "Don't use it".

  1. "Don't use it" - it will still be enabled just not used and you should have some security on it.
  2. "Have unchecked the IPv6 box" - It is still not fully disabled and you should have some security on it. Also there are a lot of articles on why not to do this.
  3. "Have cleared it from the registry" - Fair play, not recommended but I suppose if it's completely cleared then there's no danger of receiving traffic on it and so in my eyes you could disable those rules, but I also see no major downside to leaving them enabled -just-in-case-.

Hope this is of some help!

  • By "Don't use it', I mean I don't really have the need for IPv6 and not applying it to any of our application or nginx. By the way, thanks for the article. I think it will be best leave it on
    – Toan Lu
    Nov 28, 2017 at 11:10

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.