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What's my Operating System

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Old 03-06-2013
mohtashims mohtashims is offline
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What's my Operating System

Can we know the operating given the IP address or DNS of the host.

All I have is


Last edited by mohtashims; 03-06-2013 at 08:48 AM..
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Old 03-06-2013
rbatte1 rbatte1 is offline Forum Staff  
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Can you resolve the server name?

nslookup myserver

You could try telnet, ftp or ssh to the address. It might give you a clue in the login prompt.

Can you not trace it with the network team? From the IP address, they should be able to trace to the physical server from the switches. At least you could then see the hardware and perhaps get console access.

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Old 03-11-2013
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verdepollo verdepollo is offline
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A useful method is to use nmap along with -O flag.

Be cautious however when using nmap inside a company network since sometimes (and more often than not) they ban its internal use for anyone outside their network team... Most networking guys would freak out if they detect a strange IP scanning their network.

In any case, there's no bulletproof method to detect the operating system flavour of a remote host with 100% effectiveness.

Last edited by verdepollo; 03-11-2013 at 06:06 PM..
Old 03-11-2013
alister alister is offline
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If you need to research the task, you can start with TCP/IP stack fingerprinting - Wikipedia, the free encyclopedia

There's not much there, but that wiki page and the phrase "OS fingerprinting" will get you started.

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Old 03-12-2013
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fpmurphy fpmurphy is offline Forum Staff  
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See NMAP Chapter 8. Remote OS Detection
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