Re: Xdm serving network from my machine!
There's not much of a difference between this and them getting a telnet
prompt. Sure they can look at your front door, but they don't get
anywhere unless they have a key. If this is still a big problem, look
into /etc/host.deny, or see what port it is on and try /etc/services.
Found it in /etc/services, comment these out and restart inetd (killall
-HUP inetd):
xdmcp 177/tcp # X Display Mgr. Control Proto
xdmcp 177/udp
Good luck,
Brandon
On Mon, 22 Sep 1997, Buddha Buck wrote:
> Greetings,
>
> I run Debian "unstable" connected to a dorm network at my school.
> Recently, people have started experimenting with Win95-based X servers,
> which apparantly broadcast messages across the network looking for
> XDMCP servers willing to use their display. I found about this by
> reading a school-based newsgroup where someone mentioned getting a XDM
> login screen from my machine.
>
> At the very least, I consider this a security problem. I don't want
> to have to run x via startx, but I -really- don't want to offer login
> screens to everybody on the local net. If that is how xdm is
> configured by default, I'll definately file a bug on it.
>
> How can I configure xdm so that it will -only- serve local servers?
-----
Brandon Mitchell E-mail: bhmit1@mail.wm.edu
Homepage: http://www.geocities.com/SiliconValley/7877/home.html
PGP: finger -l bhmit1@cs.wm.edu
"We all know Linux is great...it does infinite loops in 5 seconds."
--Linus Torvalds
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