On Saturday, March 8, 2003, at 12:51 AM, George J. Jahchan, Eng. wrote:
Pavan,
I am trying to block RFC1918 networks, in addition to unassigned ones (IANA
reserved or not assigned) from getting in or out on the public interface.
Any traffic coming in (or leaving) from such networks on the public
interface undoubtedly has a spoofed source IP and should be dropped.
As mentioned before, classes A & D networks are fairly well documented on
IANA's site <http://www.iana.org/assignments/ipv4-address-space>, but B and
C are listed as "various registries" and in bulk, which is of no help.
I need a list of 128~191 and 192~223 netblocks which are either reserved or
not assigned.
Those blocks are assigned, not reserved, and are in use, so why do you care that it might be assigned to various registries? It's marked as various registries because the blocks were handed out before the current allocation policy was in place, and various pieces of those blocks were given to disparate registries and users.
In any event, the IANA recently reclaimed a lot of that space and the new list on their web site has about 20 /8's marked as reserved, instead of 'various registries'.
-- Nick
