full-disclosure - AW: Windows Messenger Popup Spam on UDP Port 10 26

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From: nils.ketelsen at kuehne-nagel.com (Nils Ketelsen)
Subject: AW: Windows Messenger Popup Spam on UDP
  Port 10 26

At 11:16 23.06.2003 +0200, vogt@...senet.com wrote:

> > A professional ISP does not block any port. Blocking ports
> > can only be done on the customer side. The ISP does not know
> > which port i might need.
>
>This isn't about you. The ISP also has a responsibility to protect
>the internet at large. If millions of spam are sent each day because
>the average user is too stupid to close off his proxy, then the
>ISP can either shut him down, or block the proxy port. Obviously,
>shutting down isn't an option for business reasons.

In this case I would request all ISPs to block port 25. Millions of spams 
are sent via this port each day.

Nils