Hi guys,

Now up and running (i think!) with my new ISP that is IPV6.

To make sure i had it all running properly, i used this site to test everything..

https://ipv6-test.com/

As it happens, it all seems to be ok, however, my score is 17/20, and one of the main suggestions is to check the firewall settings as
it is filtering ICMPv6 messages sent to my computer.

Having had a quick scan of the firewall settings, i am stumped as to where or what i should be looking for.

Any help appreciated.

Why would filtering (blocking) ICMP messages be a problem in typical usage?

Not sure to be honest.

It was only what the test showed and after reading a few articles.


If you think it’s ok to leave then I will.

Unlike ICMP in IPv4, ICMPv6 is vital to the correct functioning of IPv6, and blocking it fully may cause connectivity issues. This is covered in RFC 4890, here: https://tools.ietf.org/html/rfc4890 . You can allow ICMPv6 in the 2862 by adding a suitable firewall filter rule which allows the protocol in the WAN -> LAN/DMZ/RT/VPN direction.

The 2862's IPv6 support is, however, sadly lacking in some respects, and - if I am not mistaken - one of these is the ability to filter specific ICMPv6 packet types. It seems it only has all-or-nothing ICMPv6 blocking, so you have to choose between potential connectivity issues and effective security/privacy.

Thanks for the reply.

Must admit there has been a couple of times i have tried to use Google search and when trying to load a further page of results, it just hangs.

Edit: just to add uploading these images, the page 'stopped' working.

I have just set this up and wondered if you could confirm i have done it correctly?

No, your Service Type protocol needs to be ICMPv6, not ICMP (which is for IPv4).

Also, I much prefer not to add custom rules to the default Filter Sets 1 or 2, but to add them to Set 3 (or later). If you do this, make sure Filter Set 2's "Next Filter Set" is set to "Set#3".

Once done, re-test via https://ipv6-test.com/ .