RE: Exploit on tcp/4128?

["Butterworth, Jim" <jim.butterworth () guidancesoftware com>]

Looks like a probe from Netcat, passing the IP required by the -n switch, and -v, echo back as  much information as you 
can about the connection attempt)  The question would be, what on your network, that you know of, is responsive to that 
port? Are any of the probed machines running processes you don't recognize?  Most likely looking for a backdoor that is 
assumed there by the command switch invoked.  This response looks like a neg response.

r/Jim Butterworth

-----Original Message-----
From: Lawrence Baldwin [mailto:baldwinL () mynetwatchman com] 
Sent: Monday, February 14, 2005 2:00 PM
To: incidents () securityfocus com; bugtraq () securityfocus com
Subject: Exploit on tcp/4128?

Anyone know what this is:

D:\nc>nc -n -v 64.132.205.69 4128
(UNKNOWN) [64.132.205.69] 4128 (?) open

'ÖP?    ?      Version?   1.3?   Error?   ?   ?   Msg?   Invalid Packet
'ÖP?    ?      Version?   1.3?   Error?   ?   ?   Msg?   Invalid Packet
'ÖP?    ?      Version?   1.3?   Error?   ?   ?   Msg?   Invalid Packet
'ÖP?    ?      Version?   1.3?   Error?   ?   ?   Msg?   Invalid Packet

'ÖP?    ?      Version?   1.3?   Error?   ?   ?   Msg?   Invalid Packet
'ÖP?
   ?      Version?   1.3?   Error?   ?   ?   Msg?   Invalid Packet    ^C


The same host above is scanning the *world* for this port:

http://www.mynetwatchman.com/LID.asp?IID=146159119

Regards,

Lawrence Baldwin
myNetWatchman.com
 
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