full-disclosure - Re: Nmap Online

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Message-ID: <1b0d006c0612051905h39ce657bh214cf60a48be253d@mail.gmail.com>
Date: Tue, 5 Dec 2006 20:05:51 -0700
From: "Ed Carp" <edcarp@...il.com>
To: full-disclosure@...ts.grok.org.uk
Cc: David Matousek <david@...ousec.com>
Subject: Re: Nmap Online

On 12/5/06, Simon Smith <simon@...soft.com> wrote:

> Why would you do this?

Well, for one, sometimes you need to do a port scan when you're not in
front of a system that has nmap installed on it.  I get a call about
once every couple of months, "why can't I get into my email server"
that's sitting behind a hardware router with a hole poked in it for
port 110.  Doing a port scan on the client's IP address ensures that
either yes, the port is open or no, it's not.  If it's open then I can
proceed with my troubleshooting - if not, I know where to look for the
problem.

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