Re: IPv6 filtering

[Mohacsi Janos <mohacsi () niif hu>]

On Wed, 26 Jan 2011, Franck Martin wrote:

>    ? ipv6 41 IPv6 # IPv6
>    ? ipv6-route 43 IPv6-Route # Routing Header for IPv6
>    ? ipv6-frag 44 IPv6-Frag # Fragment Header for IPv6
>    ? ipv6-crypt 50 IPv6-Crypt # Encryption Header for IPv6
>    ? ipv6-auth 51 IPv6-Auth # Authentication Header for IPv6
>    ? ipv6-icmp 58 IPv6-ICMP icmpv6 icmp6 # ICMP for IPv6
>    ? ipv6-nonxt 59 IPv6-NoNxt # No Next Header for IPv6
>    ? ipv6-opts 60 IPv6-Opts # Destination Options for IPv6
>
> Ok filtering ipv6 and ipv6-icmp is understood, it is like ipv4.
>
> But what about the others, should they be blocked, restricted?
>
> Does a ios "deny ipv6 any any" affect them?


Have a look at RFC 4890 Recommendations for Filtering ICMPv6 Messages in 
Firewalls.
        Regards,
                Janos Mohacsi