Re: IPv6 filtering

It's just a named IPv6 ACL but the RFC refers to best practice allowed ICMPv6 messages on firewalls and routers, and filtering out unwanted ICMPv6 message types which can be considered security risks.

See

https://books.google.co.uk/books?id=oTKEX9stxooC&pg=PT391&lpg=PT391&dq=cisco+ipv6+access-list+RFC4890&source=bl&ots=mTSj5Og4Zp&sig=tqId6_c4FiOQyqv5mFK_vILuWU8&hl=en&sa=X&ei=XMThVKvxOJLkaPzdgaAL&ved=0CDAQ6AEwCQ#v=onepage&q=cisco%20ipv6%20access-list%20RFC4890&f=false

--
BR
Tony
Sent from my iPad
> On 16 Feb 2015, at 04:59, Cisco Fanatic <ebay_products_at_hotmail.com> wrote:
> 
> I am not sure what does this commands do?
> !ipv6 access-list RFC4890 permit icmp any any 1 3 permit icmp any any 1 4!
> yuri
> 
> 
> Blogs and organic groups at http://www.ccie.net
> 
> _______________________________________________________________________
> Subscription information may be found at: 
> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net