start > CentOS > 5 > Remote X Display

Remote X Display

Created by dave. Last edited by dave, 14 years and 260 days ago. Viewed 6,574 times. #2

[diff] [history] [edit] [rdf]

labels

attachments

Displaying Remote X Applications On Your Local Display

...ie, connect to a remote machine, run the X application there, but displayed on your local CentOS 5 desktop.

The "correct" solution is to use tunneled X displays through ssh:

$ ssh -Y user@remote
remote$ application

But We're Banging Rocks Together Here

If your remote system doesn't have ssh for whatever reason, you have to do a bunch of things to do it old-school:

add to /etc/gdm/custom.conf in the [security] section:

# If true this will basically append -nolisten tcp to every X command line, a
# good default to have (why is this a "negative" setting? because if it is
# false, you could still not allow it by setting command line of any particular
# server).  It's probably better to ship with this on since most users will not
# need this and it's more of a security risk then anything else.
# Note: Anytime we find a -query or -indirect on the command line we do not add
# a "-nolisten tcp", as then the query just wouldn't work, so this setting only
# affects truly local sessions.
DisallowTCP=false

add to /etc/sysconfig/iptables BEFORE the line about ESTABLISHED,RELATED

-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 6000 -j ACCEPT

recycle iptables:

$ sudo service iptables restart

restart X (ie logout, log back in)
in your local terminal, get the xauth cookie. You want the one which is for your local system, and is NOT the /unix socket:

$ xauth list
centos5-dave/unix:0  MIT-MAGIC-COOKIE-1  3ff263c171f0dea508c3ebf4b80365cb
centos5-dave:0  MIT-MAGIC-COOKIE-1  f1e47ba23d87b8ec8db65cda67e99684

on the remote system (bash/ksh presumed), you have to export your DISPLAY setting, then add the xauth cookie for that display:

remote$ export DISPLAY=172.30.0.154:0.0
remote$ xauth add 172.30.0.154:0  MIT-MAGIC-COOKIE-1  f1e47ba23d87b8ec8db65cda67e99684

You should now be able to open xlogo as a simple connectivity test.

no comments | post comment

see also:
Linux	Power Connect 622...	Remote+X+Disp...	Split Screen
snipsnap-index	snipsnap-search	dedupe	Growing iSCSI
Linux	linux	Simple SOCKS proxy	Steps+For+Simple+Sysad...
Dedupe To Tape	Autosupport mai...	Booting	NDMP Restore ...
Ot...	Netscreen	Interstellar (I...	CentOS/5

Remote X Display

Displaying Remote X Applications On Your Local Display

Virtual Dave Megaplex:

Useful: