On Sun, 13 Oct 2002, Phil Howard wrote: > On Sun, Oct 13, 2002 at 01:10:23PM +0100, Antony Stone wrote: > > | On Sunday 13 October 2002 12:50 pm, Phil Howard wrote: > | > | > I would like to know how best to block 10000's of addresses using > | > netfilter. Clearly I do not want to be placing 10000's of individual > | > filter table entries in. > | > | Sounds like an incompatible set of requirements. If you want to block 10000 > | addresses (and assuming they don't fit into contiguous network ranges) then > | you need 10000 rules to be able to specify what you want to block. > > They in fact are 10000+ different netblocks. can you perhaps explain just a bit of the rationale for what you're doing? it's not often that one has to block that many independent, non-related IP addresses. just curious. i mean, if it were just for filtering SPAM, you could use other tools. rday