North American Network Operators Group|
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Re: short Botnet list and Cashing in on DoS
Gadi Evron wrote:
Next you'll block SIP if we start getting "spam calls"? Or any other application that pops up and is used by the same people sending spam today?
ISP's could then, I suppose, limit every user to 5 emails a minute (or any other number).You're fixing the symptom, not curing the cause. The immediate root cause is a compromised PC which among other things does send mail across port 25. Itīll also send mail using x-y-z webmail or misconfigured forms, etc.
Abuse using port 25 is a major issue today, why not solve it? If a user wants it open, they could always ask for it or even pay more money. Perhaps move to a static IP?It would be much more beneficial to deny all packets from AS's which don't have abuse in control.