Advice on how to make my network more efficient

I have a network with the following two sub-networks:

Network 1 (private): Class C network:

Server: Intel P4 processor, with Win2K Server (Active Directory is
installed and, I think, by means of it, accesses and permissions for
users and files are setup)

The rest of the machines on this private network have OSs ranging
from Win95 to Win2000, and processors ranging from Pentium MMX to
P-III processsors. All Ethernet cards are of 100 MBps.

Subnet Mask: 255.255.255.0 for all of them

All class C network machines communicate with each other through
an Encore 10BaseT switch.

Network 2: IP numbers of the form 182.168.xxx.xxx, which I think,
corresponds to public IP addresses.

Subnet Mask: 255.255.255.0

All Network 2 machines communicate with each other through a
NetGear 100 BaseTX switch.


For the internet access, behind an ADSL modem/router, there is an
Intel P4 processor machine, with Linux Fedora Core 1 installed
(Bridge). This machine has 3 Ethernet cards whose IPs have been
configured manually:

eth0: 192.168.10.2;
eth1: 192.168.0.254 to network 1.
eth2: a public IP to network 2.

A Billion ADSL modem/router is connected to eth0 for internet
access, and... serves both networks.

For better understanding, I have made the following sketch:


Internet---ADSLmodem/router---Linux bridge---Encore switch
(Billion 711CE) Fedora Core1 (Network 1)
|
|
|
|
NetGear switch
(Network 2)


Both networks have access to a common folder in the Linux machine.

I am trying to make network 1 more efficient (fast in all sense)
Initially, I thought about changing the switch of network 1 for a
faster one. What further options do I have in order to make network 1
more efficient in terms of speed, access, and sharing of files ?

Your help, suggestions, and comments will be much appreciated.

Thanks.

 > Network 2: IP numbers of the form 182.168.xxx.xxx, which I think,
 > corresponds to public IP addresses.

ahh..ou..missunderstodd it.

So if it is a public ip network: how is it routed to the world, and from
the wrold back to you?

regards, enno


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