Hi folks,

I have 2 boxes connected with a crossover cable for broadband sharing. Both of them can ping to each other. Broadband sharing has no problem.

PC1 - RH9
eth0 - connected to broadband
eth1 - connected to PC-2, IP 192.168.0.1

PC2 - Gentoo box
eth0 - connected ot PC-1, IP 192.168.0.2


On PC1-RH9
==========
I could "ssh -l root 192.168.0.1" and start applications of PC2-Gentoo box displaying them on screen.

But I could not make it the other way round, i.e.

On PC2-Gentoo
=============
# ssh -l root 192.168.0.1
root@192.168.0.1's password:
Last login: Fri Nov 7 16:06:41 2003 from 192.168.0.2
[root@localhost root]# konqueror
konqueror: cannot connect to X server

Kindly advise how to fix this problem. Thanks in advance.

B.R.
satimis

Take a look at PC1's sshd_config file. Make sure X11Forwarding is set to yes. If not, make the change and restart SSH. Also, try adding the -X option:

ssh -X root@192.168.0.1

Hi,

Now my problem changed.

PC1-Gentoo box could connect X-server of PC1-RH9 box. But PC1-RH9 box could NOT connect X-server of PC2-Gentoo box]

On PC1-RH9 box
# ssh -X root@192.168.0.2
ssh: connect to host 192.168.0.2 port 22: Connection refused
# ssh -l root 192.168.0.2
ssh: connect to host 192.168.0.2 port 22: Connection refused

Port 22 seemed locked permanently.

Ping PC2 was OK

Both abovementioned commands worked on PC2-Gentoo box

It looks a little bid funny to me. I have not touched any files on both boxes since last posting except turning off both boxes for a while.

I was searching to temporarily stop iptables on PC2-Gentoo box without result.

B.R.
satimis

Hi all,

Finally I discover the cause of the problem but still there are some minor problems remained unsolved.


PC1-RH9 box
==========
Recently I am testing Shorewall 1.4.7 on this box so that there are 2 firewalls, Shorewall and Iptables, running on the same box but without conflict. I have configured Shorewall 1.4.7 including IP masquerading leaving Iptables untouched as default firewall eversince the intallation of RH9.

After stopping Iptables
# /etc/init.d/iptables stop

Then PC1-RH9 box, both as ROOT and USER, can connect both ROOT's and USER's X-server of PC2-Gentoo box.


PC2-Gentoo box
============
This box also has 2 NICs
eth0 connected to broadband via ADSL modem when it works as standalone workstation. At time of testing SSH there is no connection

eth1 connected to PC1-RH9 box

If I add 'adsl-start' in /etc/conf.d/local.start, this box can't connect X-server of PC1-RH9 box (however login to PC1-RH9 box being possible). I have to remove it from /etc/conf.d/local.start. In the recent test I added it to reconfirm this discovery.

Now another minor problem popup after removing 'adsl-start' at finish of the aforesaid reconfirmation. As ROOT PC1-Gentoo box can't connect X-server of PC1-RH9 box (login being possible)

# ssh -l root 192.168.0.1
root@192.168.0.1's password:
Warning: No xauth data; using fake authentication data for X11 forwarding.
Last login: Sun Nov 9 16:53:10 2003 from 192.168.0.2

# konqueror
Xlib: connection to "localhost:11.0" refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key
konqueror: cannot connect to X server localhost:11.0

# kedit
Xlib: connection to "localhost:11.0" refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key
kedit: cannot connect to X server localhost:11.0

But as USER PC2-Gentoo box can connect X-server of PC1-RH9 box.


My new questions are;

1) How to configure Iptables so that it can coexist with Shorewall without affecting SSH
2) How to solve the remaining problem in PC2-Gentoo box as mentioned above

Thanks in advance.

B.R.
satimis

I was wondering if you have ever resolved this problem. I just started getting it since I upgraded to the latest mandrake version. I have several linux boxes but only the 2 i upgraded to mandrake 10 are having exatly the same problem you describe in the last post.
Xlib: connection to "localhost:11.0" refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key

Brian

Hi,

I recalled that I solved the problem finally which happened sometime ago. Now I'm not on Redhat and Gentoo any more, having migrated to FreeBSD. Sorry I could not give you suggestion.

B.R.
satimis