topic Re: X-Windows and subnet? in Operating System - HP-UX

X-Windows and subnet?

Vic S. Kelan — Thu, 09 Feb 2006 08:59:41 GMT

Hello All,

I have 7 hpux servers that all were in a subnet, we promoted 4 of the servers to production and the networking folkes moved it to a different subnet.

Ever since I am unable to connect to the 4 servers via x-windows. I was able to connect to all when they were in the same subnet.

Networkers have all ports open on the firewall and I can telnet to the 6000 port on my PC from the production server and from my PC can query the 177 udp port.

I came accross this post and have done everything in it, unfortunately it wasnt conclusive:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=950134
Please help!!

Re: X-Windows and subnet?

Steve Steel — Thu, 09 Feb 2006 10:12:38 GMT

Hi

Tunnel with ssh maybe

xdmcp does not go through a firewall well

how do you make the connection

When the connection fails is there a message in /var/dt/Xerrors on the machine you tried to contact

Does ping -ov host show the same route there and back

On the machines not moved and your pc does nslookup of ip and name work

do the moved systems resolve well on the other subnet

Steve Steel

Re: X-Windows and subnet?

Vic S. Kelan — Thu, 09 Feb 2006 10:46:38 GMT

Hello Steve;

thanks for your response, I use winaxe + for my connection.

The /var/dt/Xerrors file is empty for the four production servers that I have the issue on.

Ping -ov from the production server to the development servers work, but does not work from the development to the production servers that are now in a different subnet. Normal ping and telnet works across both servers???

nslookup resolves perfectly on my PC, dev servers and production. So thats not an issue.

Could you point me to how to tunnel X with ssh please in case I cant make any headway?

thanks

Re: X-Windows and subnet?

Arunvijai_4 — Thu, 09 Feb 2006 10:53:28 GMT

Hello,

Take a look at /opt/ssh/etc/sshd_config for x11 forwarding, ( I dont remember the exact parameter name, no VPN from home :-(). Or, you can use Putty for SSH connection, it has got options for X11 forwarding thro SSH.

-Arun

Re: X-Windows and subnet?

Steve Steel — Thu, 09 Feb 2006 10:56:33 GMT

Hi

This is quite good

http://opensores.thebunker.net/pub/mirrors/ssh-faq/TheWholeSSHFAQ.html

You are not well setup since the ov only goes one way

Can you connect a pc to the development subnet and does it work there

Steve Steel

Re: X-Windows and subnet?

Vic S. Kelan — Thu, 09 Feb 2006 11:25:25 GMT

thanks guys, was able to use the ssh to connect to X.

Steve, do you know what I could look into for the ping -ov all the same, am concerned that does not work well.

I can connect to the dev with no issue, can ping to the prod with no issue but only fail to ping to prod with the -ov option....

anyhelp pls......