Re: firewall
The question would be in the same mind of asking if a firewall is needed for IPv4..
Given not everyone is running ipv6,but, I can asure you there are some folks out there that have access to it and can and will start to cause problems with ipv6 as time progress.
That being said. Last I remember, Dlink (My favorite company, LOL NOT..) is starting to ship IPv6 products. they are similar to the older products that exist. Example. DLINK DIR-655 Extreme.
This unit is now IPv6 compatible
http://www.dlink.com/ipv6 is a list of IPv6 compatiblity concerns that the DLINK covers.
Be advised. I have had some weird history with DLINK products. Usually, I get about 2 to 3 years out of a unit, then, it dies and I have to get a new one. Not too bad considering by that time, something new comes out and i am kinda forced to get an upgrade. (Works for me.)
Now. I have an older version of the DIR-655. I use it only to connect my wireless machines only. I don' t use any of the firewall functions of the unit. I am running IPv4/IPv6 over the unit without a problem. My firewall is in front of this unit. Anyway... Currently, there are several options you can use to achieve
a firewall for your network.