Red Hat

I'm trying to use VNC from my desktop to connect to a RedHat (RHEL6) Server. I connect but the screen is black. It I go into the Data Centre the screen is unlocked and all is okay there. I can connect no problem to other Desktops & Servers. Is there a setting maybe or can anybody suggest another product I could use for remote access?

Check whether your connection request from vnc is ever reaching its target, RHEL.

If you can take this vnc to another location (into the Data Centre) and it works, then the only difference is the network.

Check that the network gateway/router is configured to route your packets.

If you wait long enough does it timeout and give an error message?

Does the Data Centre have a firewall that is stopping you getting in?

The connection is being made; it asks me for the password to authenticate. It's after this that I get the black screen with the vnc screen. It does display the Server name so, I reckon the connection is being made.

Strange. I'd download a copy of putty and try with that for comparison if nothing else. I assume that your vnc is on windows?

Putty is a free and quick download.

Downloaded putty and it works perfectly. I was hoping to use VNC to see the actually Desktop. Thanks for the feedback.

Right, that proves that it's NOT a network routing problem.

It's a problem with vnc somewhere.

So vnc works fine inside your Data Centre but not outside!

Scratch head time!

Maybe vnc needs to use some ip port number which is not open in the Data Centre firewall?

---------- Post updated at 02:40 PM ---------- Previous update was at 02:32 PM ----------

http://www.cyberciti.biz/faq/linux-i...000-5800-5900/

Just found this:

Knowledge Base :: How do I allow connections through my firewall?

Have you looked at your ~/.vnc/xstartup file?
Are you only having issues on one server or many?
And yes you need to open the firewall for each VNC session. I used this to do my setup
redhat.com | Taking your desktop virtual with VNC