Re: Correct way to not load ipv6 module f8/9?

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On Friday 21 March 2008 10:02:04 Chuck Anderson wrote:
> > This is the guidance I'm passing out in our security documents:
> >
> > 1) Create a file /etc/modprobe.d/no-ipv6
> > 2) Add inside it
> >     install ipv6 /bin/true
> > 3) Close up and reboot
>
> Why not just firewall it?

The whole idea is to reduce the attack surface of linux. What if there is a 
vulnerability in the ipv6 code between the ethernet card and iptables? What 
if you protect it from external abuse but there is still a privilege 
escalation attack for local users?

Its best to just get rid of it if you do not need it.

-Steve

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