Make a router

engnet · 03-16-2004, 12:34 PM

Hello all, I need some advice and any links to howto's that you may have.

I run a Active Directory network & Internet services for my dept, due to client/workstation increases we are nearly at full allocation of our class c IP range.

I have therefore been allocated a secondary class b 172.30.xxx.xxx range to blend into my network.

I have played with Linux routing services for simple internet>lan type situations, but would like to run Linux routing to bind my new IP ranges into an unrestricted network.

The network will hopefully be like this:

Class C IP Range: 193.xxx.xxx.xxx

Class B IP Range: 172.30.xxx.xxx

Gateway for internet and proxy connections: 193.xxx.xxx.1

All servers will reside on the Class C subnet and client workstations via the lan and wlan will be across the Class B subnet

Any ideas of were to start (other then a bottle of vodka) would be most welcome.

Many Thanks

Chris

Mara · 03-16-2004, 04:14 PM

The set of commands will be similar to:

Code:

ifconfig eth0 193.xxx.xxx.xxx
ifconfig eth1 172.30.xxx.xxx
route add default gw 193.xxx.xxx.1

How it works? First command assigns an IP to 1st NIC. Second - to the second one (you may have them in reverse order, of course). Two routing table entries should be added - for both networks. Then you need to tell it where to send all that doesn't fit the networks - that's the default gateway (and the third command).

engnet · 03-16-2004, 04:32 PM

Cheers Mara

I am aware that both will need to be setup via allocated eth devices, my problem is the routing table entries, having never done them before I was wondering were the best is that would have some basic info.

Cheers for your comments.

Chris

Peacedog · 03-16-2004, 04:45 PM

here is some additional info

http://linux-ip.net/html/ch-routing.html

http://www.tldp.org/HOWTO/HOWTO-INDE...tml#NETROUTING

good luck.