Few questions...

Ayyasamy, Senthilkumar (UMKC-Student) saq66 at umkc.edu
Thu Jul 25 16:11:50 PDT 2002




> > I could not find any bro mailing list archive.
> 
> (it's available as a single flat file [:-(] by sending "get 
> bro archive"
>  in the body of a message mailed to majordomo at lbl.gov)

Thanks !!! I will be really useful for me.

> > Does bro detects illegal TCP acknowledgements and 
> > retransmissions which i could not see using ordinary 
> > dump utility?
> 
> Depends what you mean by "illegal".  It detects acknowledgments above
> sequence holes, and inconsistent TCP retransmission.  
> Unfortunately, when
> looking at a large volume of traffic, these show up due to 
> various things
> being broken (as mentioned in the Bro paper), so their presence isn't
> a useful indicator of an attack.

Have you observed it  in a practical network? 
-senthil



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