pseudo host/domain names for internal server, with FireFox Linux

I have internal server running on a FireFox Linux box. I only intended to use it internal within out organization. It is accessed with a internal "IP" address, for web, ftp, ssh shell, etc.
But I would wish to able to access it with a hostname and domain name, like, ""  just internally of course.  So far I have no trouble change the server's name to "belltower" and I know  Is there a way to make an entry in the DNS of our network (or will DNS automatically learn here is a new host?) so  it maps   to    (the internal IP)
Do I need to contact our net administrator this?  If I do what should I ask.  
Also, do I need to set a domain name for the server?


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You can invent your own internal domain name.
It can be toplevel domain like .local windows domain would use if said nothing
It can be sub-domain of public domain
It has to be set up in internal private DNS server either way. Most home routers let you do that without extra systems involved. Also windows server has such function.
zzhang2006ProfessorAuthor Commented:
Thanks, gheist,
I am not sure the DNS our IT administrator told me to use is internal or external. It has an IP address of Does that sound like internal?  In any case. Does it make sense to ask the IT administrator in my company, to add an entry in the DNS table, so it maps
       The domain and host name I choose to the local IP address, say -->.    (Do want to ask a silly question)

Also, assuming DNS can be set right, are there anything need to be done on the Linux server box, other that the machine name?
Yes 10.x sounds internal network

Better so that you have 2 separate zones for public use for internal use

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zzhang2006ProfessorAuthor Commented:
Thanks, it worked!
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