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Penetration Testing: Port identification methodology

Port identification methodology

From: Erik Norman <erik.norman_at_ccnox.com>
Date: Mon, 2 Jul 2001 12:13:35 +0200

Hi all,

I have a question regarding methodology while performing a
PT. It concerns identifying programs/services.

Imagine a full nmap scan has been performed. A handfull
of open ports was found on a particular server. The
usual 25, 53, 80 etc are identified, but one or two ports
stand out from the crowd. Looking in various 'common ports'
files does not provide a hint what the port is used for.

Connecting with telnet yields no text, and a tcpdump
dump does not provide any text (in clear anyway).

Now what!???

How should one approach this?

/Erik

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Received on Jul 02 2001

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