interface
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... role
including being an essential component in establishing and
maintaining communications both at the interface level and for
sessions to remote nodes ...
... These messages are also used to check the uniqueness of any
addresses that an interface proposes to use (Duplicate
Address Detection - DAD). Four messages -- Neighbor
Solicitation ...
... IPv6 addresses associated
with the link layer address of an interface (the inverse of
Neighbor Discovery, where the link layer address ...
... also be acting as a router so that all the messages that might be
used in configuring a router interface need to be accepted and
generated. These messages should not transit through a firewall that
...
... link-local messages that need to be
allowed through are those directed to the host's interface.
...
... global unicast
addresses, of interfaces on the local link. No special action is
needed to filter ...
... ICMPv6 traffic addressed
to an interface on a firewall. For a small number of messages, the
desired behavior may differ between interfaces ...
... interface on a firewall. For a small number of messages, the
desired behavior may differ between interfaces on the site or private
side of the firewall and the those on the public Internet ...
... node and maintaining unicast and multicast
communications through the interfaces of a node. These messages must
not be dropped if the node ...
...
It may be desirable to drop these messages, especially on public
interfaces, if the firewall is not also providing mobile home agent
...
... special circumstances, such as if Redirect messages are accepted on
private interfaces but not public ones.
If a node ...
... Firewalls need to generate and
accept these messages to allow them to establish and maintain
interfaces onto their connected links.
...
... firewall will generally be behaving as a router) and accept these
messages to allow them to establish and maintain interfaces onto
their connected links.
...
... that also act as multicast routers need to process these messages on
their interfaces.
...
... firewall but should not be
accepted for local delivery on any of its interfaces.
Unknown ICMPv6 Error messages ...