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SubjectRe: Evil TCPD? (Was: Re: UseNet Gateway One Way ok?)
Date
  Jon Lewis <jlewis@inorganic5.fdt.net> writes:
>
> > - Intentionally drop packets... (give them _less_ than UDP priority)
> > ("He's sending packets too fast... drop 'em")
>
> This may keep their system busy, but it won't do a lot of good for your
> net connection either.
>
The best thing to do would be to accept the mail (with _really_ low
bandwidth) up to the final dot but instead of sending the final SMTP
"ok-delivered" message you do "getchar(SMTP); exit(99);". Bingo, their SMTP
is blocked until they decide to timeout (and it's a really long timeout at
this point). If enough people do this...

> BGP "accidents" with bogus as paths might be interesting too.
>
Since they connect directly to mae-east... it'd be possible to grab their
networks, though; simply publish two /16s for each /15 they announce, and
so on. (agis.net has a _lot_ of networks. Way too many, in fact. It seems
that they're equally interested in conserving IP numbers as in listening to
spam receivers' complaints.)

--
Corollaries:
1) When things just can't get any worse, they will.
2) Anytime things appear to be going better, you have overlooked something.
--
Matthias Urlichs \ noris network GmbH / Xlink-POP Nürnberg
Schleiermacherstraße 12 \ Linux+Internet / EMail: urlichs@noris.de
90491 Nürnberg (Germany) \ Consulting+Programming+Networking+etc'ing
PGP: 1024/4F578875 1B 89 E2 1C 43 EA 80 44 15 D2 29 CF C6 C7 E0 DE
Click <A HREF="http://info.noris.de/~smurf/finger">here</A>. 42

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