Auto ACL blocker

Thomas Magill tmagill at
Tue Jan 18 19:23:12 CST 2011

-----Original Message-----
From: ML [mailto:ml at] 
Sent: Tuesday, January 18, 2011 4:28 PM
To: nanog at
Subject: Re: Auto ACL blocker

> I know Spamhaus doesn't offer a BGP feed of the DROP list.  Has anyone 
> made a homegrown solution?

"DROP is currently available only as a simple text list but may be available in the future by BGP, announced via an Autonomous System Number (ASN). DROP users could then choose to peer with that ASN to null those prefixes as being ranges for which they do not wish to route traffic."

I considered giving it a shot until I read that.  It doesn't seem very difficult but don't have the free time to work on things that someone else claims is coming.  I also don’t have a spare ASN to share it externally which would be the ultimate goal, like the Cymru bogon peering.

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