X Windows Security With 2nd Session

[Art Lemasters <alemas@rmi.net>]

     In order to run a second X Windows session, I was advised to
add

:1 local /usr/X11R6/bin/X :1 vt8 -bpp 16

to the /etc/X11/xdm/Xservers
file.  What about security for the second vt session (local/
external Internet)?  Should I add some lines to the
/etc/X11/xdm/xdm-config
file--lines that begin with
"DisplayManager.", as are for the :0 session?

I'm not concerned about any local security threat (any in the subnet),
but am concerned with any possible threat from outside the subnet
(in this case, the Internet).

...running potato here, BTW.

Art