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flat file | to FQDN [DNS]
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fear_nothing
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Post Posted: Wed Apr 26, 2006 10:54 am   Post subject: flat file | to FQDN [DNS] Reply with quote Back to top  
Got a flat file of 500 or so IPs. I’m looking for a script or tool that will resolve each IP to a DNS name.

Ideas?

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-Fear

Remember when it comes to Information Security only the paranoid will survive….






Slashdot poster: I don't use commercial applications. I don't use programs for my security tests. I do the tests myself everyday.

Slashdot reply: You don't use programs? What, you put the cat-5 in your mouth and try to *taste* the intruders?

An infinite number of monkeys pounding away on keyboards will eventually produce a report showing that Windows is more secure and has a lower TCO, than linux.
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fear_nothing
Moderator
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Joined: 07 Nov 2001
Posts: 2766
Location: The end of the internet
Post Posted: Wed Apr 26, 2006 10:58 am   Post subject: Reply with quote Back to top  
Guess I just had a DUH! moment... nmap would fit the bill here Rolling Eyes

_________________
-Fear

Remember when it comes to Information Security only the paranoid will survive….






Slashdot poster: I don't use commercial applications. I don't use programs for my security tests. I do the tests myself everyday.

Slashdot reply: You don't use programs? What, you put the cat-5 in your mouth and try to *taste* the intruders?

An infinite number of monkeys pounding away on keyboards will eventually produce a report showing that Windows is more secure and has a lower TCO, than linux.
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EdisonRex
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Joined: 06 May 2002
Posts: 10153
Location: Not Moscow
Post Posted: Wed Apr 26, 2006 12:04 pm   Post subject: Reply with quote Back to top  
http://cr.yp.to/djbdns/tools.html

and feed your file to them as input

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T
Curmudgeon


Joined: 17 May 2001
Posts: 16184
Location: Airstrip One
Post Posted: Wed Apr 26, 2006 3:14 pm   Post subject: Reply with quote Back to top  
for /f %i in (filename.txt) do ping -n 1 -a %i >>results.txt

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