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Re: nmap output bug?
From: Daniel Miller <bonsaiviking () gmail com>
Date: Mon, 24 Oct 2011 10:24:55 -0500

On 10/21/2011 08:24 AM, Paul Griggs wrote:
Hi dev list,

I'm parsing nmap standard output using various techniques, and just discovered an anomaly.  For reasons that are not clear to me, sometimes the line that reports an open port 
contain "<portnumber>/tcp open" with a single space between "tcp" and "open", and other times with two spaces between "tcp" and 
"open".  I can't imagine any legitimate reason for it.  Yeah, I should probably be parsing XML instead, but I thought I would throw this out there.

Paul




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Paul,

The reason is that the output is placed in a variable-width table for each host. You could have up to 5 spaces there, in reality. Here is an example, using X instead of spaces:

PORTXXXXXXSTATEXSERVICE
1/tcpXXXXXopenXXtcpmux
31337/tcpXopenXXElite

And yes, you really should be parsing the XML, or at the very least, the grepable output (-oG).

Dan

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  • nmap output bug? Paul Griggs (Oct 24)
    • Re: nmap output bug? Daniel Miller (Oct 24)
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