Atrivo/Intercage: Now Only 1 Upstream

Christopher Morrow morrowc.lists at
Wed Sep 17 13:41:23 CDT 2008

On Wed, Sep 17, 2008 at 1:32 PM, David Ulevitch <davidu at> wrote:
> Christopher Morrow wrote:
>> How about providing some open-source intelligence in a centralized and
>> machine-parsable fashion (perhaps with community input of intel even)
>> which would allow better decsions to be made?
> Reputation based on src_addr is /so/ 2005.  ASN has a few more legs
> perhaps... but...
> All the growth in Internet-connected compute clouds (EC2, AppNexus, GoGrid,
> etc.) makes any system based around IP reputation decidedly less useful.

there is more than 'srcip' you can use to judge reputation on... if
you have something 'not a router' you can even implement other
options... Adding things like ttl's to the entries, sliding the
reputation on that as well. It's not just 'src ip'. ASN is a really
big hammer....

> At the end of the day, nobody is going to drop packets for amazon's IP
> space.

nope, but amazon can/may-be-able-to do some protections on their side,
or individuals could choose to block bits/pieces of amazon, and they
have already.

> -David

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