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Date:      Thu, 9 Aug 2001 10:42:45 +0200 (CEST)
From:      =?iso-8859-1?q?m=20p?= <sumirati@yahoo.de>
To:        bsd2000au@yahoo.com.au, crimsun@email.unc.edu
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Yep-I been hacked! Whats psyBNC? Someone installed it
Message-ID:  <20010809084245.72214.qmail@web13306.mail.yahoo.com>

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Hi Dan
>  --- "Daniel T. Chen" <crimsun@email.unc.edu> wrote: >
> Sounds like a bnc used for irc, meaning that someone
> > connects to your
> > computer via the bnc app and uses your hostmask to
> > connect to an irc
> > server.
> Yep that's it...but I don't have an IRC server
> installed ? How are they compromising me by doing
> this?
> Whats a BNC app?
> Thanks for your help
> Keith

Hi Keith,

what a BNC app is? A bouncer. What is done by the bouncer:

User connect to the "BNC" app at your computer at whatever port above 1024
he/she choose. The program makes a connection to different IRC servers (or is
connected all the time). 
The bouncer is sending all what it gets from IRC back to the user connected
from an external host.

To the log: someone (your user?) tried to download the bouncer from an page
which have it. Then tried to make (or: BUILD/compile) the application. Then
moved the application to a directory called log, renamed the application from
psyBNC to log and the config file also. Then he/she started the bouncer looked,
it was running and logged of.

Possibly you don't want your users anymore to:

- use a c compiler on your machine
- letting them connect to whatever they want

Try:
- Change rights on the c compiler
- Install at least some packet filters

Hope that helps

Marc



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