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X



Does anyone know of a way to test whether or not X can make it between points A
and B?

I'm working on a program from a remote box A, and I have MI/X at box B.

issuing the following command gives:
====
[root@nic-31 .vnc]# xclock -d 144.15.8.165:0.0&
[1] 1263
[root@nic-31 .vnc]# Error: Can't open display:
[1]+  Exit 1                  xclock -d 144.15.8.165:0.0
[root@nic-31 .vnc]#
====
also, doing
====
[root@nic-31 .vnc]# export DISPLAY=144.15.8.165:0.0
[root@nic-31-c29-111 .vnc]# xclock&
[1] 1267
[root@nic-31-c29-111 .vnc]# _X11TransSocketINETConnect: Can't connect: errno = 1
13
Error: Can't open display: 144.15.8.165:0.0
[1]+  Exit 1                  xclock
====
both methods give errors, so I'm assuming that either

1)  I've messed something up.

-or-

2)  The firewall I'm behind currently won't let X through

Either is quite possible..

Is there a way to assure that 2 is the cause?

Thanks in advance,

Brian