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Re: Source of Windows PopUp SPAM: msg#00173

security.incidents

Subject: Re: Source of Windows PopUp SPAM

In-Reply-To: <3DAEF826.484292FA@xxxxxxx>

>Carv and all,
>
>A 'net send' sent a message in my tests using UDP-135.
>I suspect is varies with what protocols are bound by
>the applications in questions and the machines in use.
>The test systems I used did not have netbios/tcp
>bound (139). The message was sent from an XP professional
>machine to an XP home machine.

I have gathered some information at

http://www.akerman.ca/trojan-port-table.html#netsend

If anyone has tried disabling DCOM

http://www.uksecurityonline.com/husdg/windows2000/close135.htm

and that has prevented network "net send" but allowed local
(machine internal) popups, I'd be interested in hearing.

>--
>Gary Flynn
>Security Engineer - Technical Services
>James Madison University
>
>Please R.U.N.S.A.F.E.
>http://www.jmu.edu/computing/runsafe

-- Richard Akerman
http://www.akerman.ca/port-table.html
http://www.akerman.ca/trojan-port-table.html

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