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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Anti-spam System Idea
On Sun, 15 Feb 2004 [email protected] wrote: > If we advertise the DHCP pools for AS1312 in a DUL, we solve the problem for > those sites that use the DUL we list them in. > > If we block outbound port 25 SYN packets from origin addresses in the DHCP > address blocks, we solve the problem for everybody. No...you just speed up the migration (which has already begun) to spam proxies that use the local ISP's mail servers as smart hosts. Then you have to come up with a way to rate-limit customer outbound SMTP traffic. BTW...who brought SARS (or more likely just flu) to nanog30? I drove (so I didn't catch it on the plane) and symptoms (sore throat, congestion, very high fever) started thursday. I've spent most of the weekend in bed waiting to die. ---------------------------------------------------------------------- Jon Lewis *[email protected]*| I route Senior Network Engineer | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________
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