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Re: [SIKKERHED] Annoncere hvilket OS der køres



donald_j_axel <sslug@sslug> writes:

> Netcraft kan stadig finde ud af både server version og OS! De bruger
> sikkert nogle andre teknikker. Her tcpdump:

Opgaven med at finde ud af hvilken kerne en maskine kører kaldes
fingerprinting. Dette involverer gerne at afprøve hvordan maskinen man
vil undersøge, svare på en række grænsefælde i TCP/IP. For eksempel
kan man kikke på hvad der sker hvis man sender en pakke der har
underlige sammensætnigner af flag sat.

Det er også derfor at Netcraft for nogle sites rapporterer at de kører
IIS på Solaris. Det sker med nogle former for load balancing hvor
selve TCP/IP forbindelsen terminerer i en Solaris-boks med hele
HTTP-protokollaget går til en IIS-boks.

Forslag til læsning:
http://www.insecure.org/nmap/nmap-fingerprinting-article.html

-- 
 Peter Makholm     |   First you fall in love with Antarctica, and then it
 sslug@sslug |                                     breaks your heart
 http://hacking.dk |                                         -- Antarctica


 
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