[plug] Lan network

Bret Busby bret at busby.net
Thu Mar 20 09:57:11 WST 2008

On Wed, 19 Mar 2008, Innis Cunningham wrote:

> ----------------------------------------
>> Date: Wed, 19 Mar 2008 23:40:43 +0900
>> From: bret at busby.net
>> To: plug at plug.org.au
>> Subject: Re: [plug] Lan network
>> On Wed, 19 Mar 2008, Tomasz Grzegurzko wrote:
>>> On Wed, Mar 19, 2008 at 4:45 PM, Innis Cunningham  wrote:
>>>>  Hi All
>>>>  I have 3 computers connected to my router and then to the net.
>>>>  1 W98 box and 2 Ubuntu 7.10 boxes.
>>>>  The Ubuntu boxes will quite happily talk to the windows box but
>>>>  I dont seem to be able to get them to talk to each other.
>>>>  Should I be able to set these boxes up to talk to one another
>>>>  out of the box or do I need to run an application to set this up.
>>>>  Is my router stopping the Ubuntu boxes from talking to each other.
>>>>  Thanks for any advice.
>>>>  Cheers
>>>>  Innis
>>> Quick question; what does it mean to "talk to one another"?
>>> Are we talking ping, file sharing?
>>> I'd doubt your router is stopping any communications between the two.
>>> Tomasz
>> I am wondering whether Innis has the Ubuntu boxes, each included in the
>> other's /etc/host file.
> Thanks Bret
> I think the answer to that is no.Seeing how I have never used that file before.
> I may have used the net for years but I have never had to set up a lan
>> Sometimes it is the simplest things, that make the difference.
> I am sure that is 100%correct and with what you and Tomasz have told me
> I hope I can get it sorted.
>> --
>> Bret Busby
> Cheers
> Innis

Hello, Innis.

The correct name for the file (typo above), is /etc/hosts .

You need to log in as root (I just use su - root , in a terminal/console 
window) and, running cat /etc/hosts should show you the contents of that 

While you can run the cat command, as an ordinary user, I think that, 
to edit the file, using vi or whatever, you need to be logged in as 

The format of entries in that file, is fairly simple and you should be 
able to see it from the existing entries in the file; each line (for the 
connected nodes of the LAN) is of the fomat
<IP address> <node computer name . domain name> <node computer name>
with a space or a tab space separating each of the three items.

I think that is how the format would b described, to the lines that 
describe the LAN nodes.

If I am wrong, I hope that others will correct me.

Bret Busby
West Australia

"So once you do know what the question actually is,
  you'll know what the answer means."
- Deep Thought,
   Chapter 28 of Book 1 of
   "The Hitchhiker's Guide to the Galaxy:
   A Trilogy In Four Parts",
   written by Douglas Adams,
   published by Pan Books, 1992


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