RE: PIX and ttl

From: Fernando Cardoso (fernando.cardosoat_private)
Date: Fri May 25 2001 - 02:52:58 PDT

  • Next message: Fabio Pietrosanti (naif): "Re: PIX and ttl"

    > You are making sense and I have seen the same thing.  NMAP can't identify
    > the servers behind the PIX.  That's a good thing.
    
    Yes, I agree with you. But then, it also makes PIX identification easier.
    
    >
    > I am not sure how you identify the PIX. How do you fingerprint
    > servers when
    > you don't know what the servers are or if they are behind a PIX?
    
    It was easy this time. If the PIX has the "fixup protocol smtp" enabled it
    would act as a "proxy" for smtp connections. The banner you would see then
    is something like this:
    220 ********0********************************************0*2******00
    ***************2******200***0********0*00
    
    About the servers, IIS 5.0 was kind enough to provide me some info about the
    system :)
    
    Cheers
    
    Fernando
    
    --
    Fernando Cardoso - Security Consultant       WhatEverNet Computing, S.A.
    Phone : +351 21 7994200                      Praca de Alvalade, 6 - Piso 6
    Fax   : +351 21 7994242                      1700-036 Lisboa - Portugal
    email : fernando.cardosoat_private     http://www.whatevernet.com/
    
    
    >
    
    
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