[SWLUG] Routing?

[alanh]

Hi All,

looking for some help with a project.....

I've set up a new linux server at  school, it's running samba on two 
seperate networks (main school network and the music dept network) 
which works just fine, pupils can save and retrieve files from the 
server on either of our two networks. Diagram shown below ;-

[(School network) 192.168.10.x] -----------[192.168.10.14 (Server 
asgard)  192.168.20.1]------------[192.168.20.x (music dept network)]

<------------------- School network ----------------------------->      
                            <-------------------------- Music Dept 
network --------------------->

Asgard has two network cards.

What i need to do now is to route packets from the 192.168.20.x network 
to out proxy server on the 192.168.10.x network. I thought I could do 
this using static routing but, my acute lack of knowledge in this area 
is now showing! Asgard is running Fedora Core 4 and our proxy servers 
internal address is 192.168.10.15.

What's the best way to enable the music systems to access the internet 
- squid, iptables? , can this be done using the routing table? I can 
ping each of the network cards in server asgard from my ibook attached 
to the music dept network but not the proxy or any other system on the 
school network.

No firewalling is required between the two networks, just web browsing. 
  Music dept workstations are all XP Pro ;-(

Many Thanks for any help / ideas

Alan (carmarthen)