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Old 02-18-2009, 12:48 PM   #1
LQ Newbie
Registered: Mar 2007
Distribution: RHEL 5.1
Posts: 20

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In RHEL 5.1 unchecking "Deny TCP connections to Xserver" doesn't work

I would like to allow X connections and in RHEL 4.4 editing the /etc/X11/gdm/gdm.conf file to DisallowTCP=false did the trick.

But in RHEL 5.1, I can't seem to get the same result. Editing the /etc/gdm/custom.conf file under [security] and adding DisallowTCP=false doesn't work. Also going to gdmsetup -> security -> unchecking "Deny TCP connections to Xserver", which basically is the same thing, doesn't work.

When I test it out as a user with "xclock -display <ip address>:0.0"

I get the error:

Xlib: connection to "<ip address>:0.0" refused by server
Xlib: No protocol specified

Error: Can't open display "<ip address>:0.0"

I know xhost + is a solution, but because of security concerns, we are not allowed to use that.

Any suggestions?

Old 02-18-2009, 01:28 PM   #2
Senior Member
Registered: Nov 2004
Location: Texas
Distribution: RHEL, Scientific Linux, Debian, Fedora
Posts: 3,935
Blog Entries: 5

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Use X11 forwarding over ssh?


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