DNS etc.

[Petr Novotny]

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On 9 Apr 00, at 15:40, Pavel Kankovsky wrote:

> > Pokud kes odpovida na dotazy prichazejici pres 127.0.0.1, tak _je_
> > tezke ji donutit, aby se zeptala. Musite prinutit cloveka nebo
> > program, aby se v konkretnim okamziku nekam podival. (K tomu uz
> > potrebujete OPRAVDU hodne vedet.)
> 
> Ani moc ne. Trivialni (i kdyz ne vzdy mozny) postup je:
> 
> telnet good.guy smtp
> HELO evil.guy
> MAIL FROM:<foobar na bad.guy>
> RCPT TO:<foobar na good.guy>
> DATA
> .
> QUIT

Moment - tohle zpusobi DNS lookup KDE PRESNE? Reverzni 
lookup na adresu, z niz spojeni jde, delat nemusim. DNS lookup 
na bad.guy delat nemusim. Neco prehlizim?

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--
Petr Novotny, ANTEK CS
Petr.Novotny na antek.cz
http://www.antek.cz
PGP key ID: 0x3BA9BC3F
-- Don't you know there ain't no devil there's just God when he's drunk.
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