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Suppliers of:
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Credit:
The tool can be downloaded from: http://teso.scene.at/releases/telnetfp_0.1.1.tar.gz
This information has been provided by Palmers.
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The TelnetFP program determines a given hosts OS via telnet do/dont negotiation.
How does it work?
When a telnet connection is established, options are exchanged. This can be used to fingerprint a host, because of the options requests themselves and the order of which they are sent.
This program connects to a host's telnet daemon and reads the first set of options (do's in most cases). To these the proper answer is send. Now a second round of negotiation takes place. Options (dont's this time) are received and the fingerprint is completely received.
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