Should you don’t want IPv6 you’ll be able to disable it to simplify community administration
This can be a continuation of my posts on community safety.
In my final put up on this collection I wrote about backing up and restoring PFSense aliases.
This put up reveals you “disable” IPv6 on PFSense after which resolve the problem with IPv6 site visitors that also seems in logs even after you “disable” IPv6 on PFSense.
Every time I put up one thing about disabling IPv6 I get slammed by a bunch of IPv6 followers so bracing for it with this put up. I’ve already written that IPv6 will be carried out securely and for those who want it, you should utilize it. Do you want IPv6? I wrote about that. I even have written about how disabling it will possibly simplify community administration on a house community right here:
Now let’s say you need to disable IPv6 on PFSense. You may suppose that simply uncheck the “Enable IPv6” checkbox and be finished with it. Properly. Sort of.
On PFSense, navigate to:
System > Superior > Networking
Uncheck the primary checkbox within the under.
It seems that checkbox units up some firewall guidelines behind the scenes, however it doesn’t cease pfsense from producing IPv6 site visitors.
Activate logging for PFSense default blocks
There are some logs you’ll be able to activate to see site visitors blocked by guidelines arrange by pfsense behind the scenes which you could’t actually see. Navigate to:
> Firewall > Guidelines
Click on the icon to view the logs on the highest proper (the place arrow factors under.)
Click on Settings. Then verify the containers subsequent to Log firewall default blocks.
That can trigger site visitors blocked to point out up within the logs and also you’ll begin seeing IPv6 site visitors, though you’ve “disabled” IPv6 with the prior setting.
The firewall itself generates a few of this IPv6 site visitors and you’ll flip it off as follows.
Disable DHCP6 Relay
Be sure DHCPv6 Relay is disabled.
> Providers > DHCPv6 Relay > uncheck Allow, save and apply.
Disable IPv6 on every interface
Navigate to Interfaces to see a listing of the interfaces in your firewall (the listing below Assignments and Switches.) Begin with the WAN interface.
> Interfaces > WAN
Set the configuration kind for every interface to “None.” Save and apply.
Repeat for every of the interfaces.
Disable the Default gateway for IPv6
Disable the default IPv6 gateway by navigating to:
> System > Routing
Set Default gateway IPv6 to none. Save and Apply.
Create guidelines to dam IPv6
You most likely don’t want this as nicely however I additionally create firewall guidelines to dam IPv6 so I can inform if one thing isn’t working or will get misconfigured.
No extra IPv6 site visitors
After altering these settings you shouldn’t see any extra IPv6 site visitors in your logs.
Observe for updates.
Teri Radichel
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