Nmap Development mailing list archives

Re: Port State NMAP Bug


From: Daniel Miller <bonsaiviking () gmail com>
Date: Fri, 22 Aug 2014 21:47:25 -0500

On Mon, Aug 18, 2014 at 3:29 AM, Arnaud Helin <arnaud.helin () approach be>
wrote:


The port 80 is open, but sometimes it has been shown as "filtered" and
sometimes "open/filtered", depending the scan range I did.

How to reproduce the problem:

- Launch kali
- In the command prompt, type: [first column is the command] [second
column is the result]

nmap -n -vv -r -p70-90 37.205.42.129

80/tcp filtered http

nmap -n -vv -r -p80-80 37.205.42.129

80/tcp open  http


Arnaud,

Thank you for this bug report. Please help us debug better by providing the
following information:

1. Output of nmap --version

2. Does the problem exist when you do not use the -r option?

3. Full output of a problem command with the -d option

4. Does the problem occur with root (or sudo) privilege, as an unprivileged
user, or both?

Thanks again,

Dan
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