> On May 30, 2019, at 5:38 PM, Allen Coates <znab...@cidercounty.org.uk> wrote: > > > On 30/05/2019 22:21, Allen Coates wrote: >> Currently, I am using a CIDR access-control-list to block (in PostScreen) >> hosts >> from certain "nuisance" countries. A weekly script derives the netblocks >> from >> the zone lists published by http://www.ipdeny.com > > A similar script could derive a DNS zone file - with varying levels of > "badness" > - if you wanted to run your own RBL…
I see the Cymru guys have an IP to ASN DNS lookup: https://www.team-cymru.com/IP-ASN-mapping.html#dns <https://www.team-cymru.com/IP-ASN-mapping.html#dns> That’s part way there. I can easily find the ASNs I care to penalize. But still have to figure out how to do something with that in postscreen… Charles > > Allen C
