-----Original Message-----
From: bascule [mailto:[EMAIL PROTECTED]]
Sent: Sunday, June 11, 2000 8:57 PM
To: [EMAIL PROTECTED]
Subject: [newbie] networking question
i am having trouble setting up two machines to talk to each other, i'll
put all the questions in this one post since they are all related,
1) do i need to 'fake' a domain for both machines to belong to or is it
enough to give each machine a name?
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Yes for most purposes you do.
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2)is the ip address of each nic the same as each machine or is that
different? (i ask because i know that one machine could have more than
one nic)
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It is different, but a part of the same subnet. Welcome to Networking 101.
Let's assume that machine A has two nic cards, for whatever purposes.
Then Machine B has one.
Machine A & B are connected to a common hub. Only ONE of the interfaces on A
is connected to the hub. The other is connected to another LAN, DSL/CABLE
modem, etc.
Now the interfaces on the same "segment" (in this case connected to the same
hub) would need to be on the same "subnet".
If you've elected to use the reserved IP's (a wise decision) of 192.168.0.1
thru 192.168.0.254 you can set up Machine B to use 192.168.0.2 or 3, etc.
Machine A can also use about any IP from 1 thru 254. 1 however is a special
case.
It is normally used for Routers or Gateways... so if A is to be a gateway...
Nat, etc...
192.168.0.1 is a good choice.
Two other things you need to know.
192.168.0.255 is called a "broadcast" address. The computers use this
reserved IP to "broadcast" to other nodes on the same "subnet" or LAN.
192.168.0.0 is the NETWORK address. Addresses ending in Zero refer to a
group or subnet.
Your Netmask is 255.255.255.0 since this is a class C network. The Netmask
is used to filter out packets. It helps distinguish their destination...
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3)do i need a default gateway or to set up any routing info if i only
have two machines connected via a hub?
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If machine A is going to be the gateway (I.E. connected to a Cable
Modem/DSL, etc.) IT is the default gateway.
In Linuxconf you ENABLE routing, but in the field where it says "Default
Gateway" you leave it BLANK on A. On machine B you fill in A's IP number...
Thus B uses A as it's gateway. Get it?
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4)i know about the reserved ip addresses but does it matter which
address in an allowed range is used? i have used 192.168.0.1 on one box
and 192.168.0.2 on the other
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See above
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5)what other quiestions should i have asked?!
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For starters dealing with DNS. DHCP for your OTHER Ethernet card. Security
levels. Samba, NFS, etc. quite a long list if you are going to set up
everything... though worth the effort.
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i have never connected two machines before, i have read a couple of
books but they are a little over my head and seem to assume a lot, my
machines both run mandrake 7-02 one is a 486 and one is an amdk6-2 400,
i have installed a netgear ea201 in each machine and according to the
diagnostic disk provided both are setup ok. of course until i know that
linux is configured properly in both machines i won't know this for
sure,
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Are you using a HUB? (this is a misnomer, it's really a concentrator, but
that's another matter...). You cannot simply connect the Ethernet ports
together. This doesn't work.
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any answers, recommended books, urls gratefully received,
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There are many books on this matter. If you are in a mixed environment one
of the newer ones about integrating Windows and Linux are particularly good.
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it is my intention to one day have the 486 machine be a firewall, i
perceive that one day the uk will have reasonably priced unmetered isp
access and i want to be ready!
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I hope your 486 has at least 64megs of RAM.
While a 486 does fine as a router, it normally does so if it is not bogged
down with things like Xwindows. You can use X to set things up though, then
merely have the computer come up in text mode.
-JMS
[EMAIL PROTECTED]
