[CentOS] Re: vncviwer in listen mode poer number

Robert Moskowitz rgm at htt-consult.com
Thu Sep 25 18:51:36 UTC 2008


Scott Silva wrote:
> on 9-25-2008 10:55 AM Robert Moskowitz spake the following:
>> I am working on the Centos wiki instructions for doing an install via 
>> vnc:
>> http://wiki.centos.org/TipsAndTricks/VncHeadlessInstall
>>
>> CD is all burned and ready to go.  I then thought about the viewer 
>> settings particularly the port number and firewall rules.
>>
>> When I connect vncviewer to a vncserver it uses port(s) 590n where n 
>> is the display number.  OK, is that what happens when a server 
>> connects back to a -listen viewer?
>
> No
>
>
>> Seems not.  According to the man page, it seems the default is port 
>> 5500, so I have to open up this port on the 'client' system and of 
>> course allow it through my internal firewall (or put the install 
>> system on the same subnet as the client and not the one with the repo 
>> server).
>>
>> Do I have this figured out right?
>
> Yes. Port 5500 is the correct one, and you might need to also have 
> access to port 5900 on the new install machine just in case you get 
> disconnected. Then you can re-connect and finish.

Oh course, I will have to know its dhcp leased address, but not so hard, 
only 2 such on that subnet.

> I don't know if I would be comfortable installing over the internet 
> with VNC since it is clear-text, but I guess it would be OK. I would 
> change passwords on the new system after it is up just to feed my 
> paranoia. 

Oh, all internal 'intra-nets'.  I just have all of my production and lab 
nets connected to a firewall to control what goes on between them.  
Simple to add port 5500 to the vnc service definition.




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