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North American Network Operators Group

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Re: ISPs are asked to block yet another port

  • From: Christopher L. Morrow
  • Date: Mon Jun 23 16:52:16 2003


On Mon, 23 Jun 2003, Paul Vixie wrote:

>
> > Its a sucky world sometimes. Perhaps Paul complained to
> > ATT/<other-unnamed-provider> with logs and such? :)
>
> oh yes.  i tried *several* ways to get their attention.  however, this
> kind of activity is so common these days that a noc literally has no
> choice but to focus their efforts on less common and more damaging
> things than relayprobing.  so i was not shocked that they did not
> answer me.

So, for <unnamed-provider-X> you have a Abuse Ticket number? Perhaps you
could send the one you think might apply to me off-list? :)

>
> > > so if you're going to block tcp/25 SYNs on outbound, please make sure
> > > you block SYN/ACK's on input too, or else you just give the spammers a
> > > little more work to do instead of a lot more work to do.
> >
> > Yup, this is in the works also... and yes, someone realized quickly enough
> > that the one-way filtering was dumb. oh well. live and learn!
>
> that's good news, thanks for sharing it.  any schedule for a fix :-) ??
>

I do not know what the timeframe is :( Sorry.




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