2 nics gateway

Hi!
I have a Problem with the following configuration:

Network1 Linux-Box Network2 Gateway-InternetPC
192.168.1.0/24 eth0<--> eth1 10.151.1.0/24 -> 10.151.1.1

I would like to route everything from Network1 into Network2 but everything
i tried didn´t work.
Ip Forwarding is enables... thats the only thing i got to work properly!

All Pc´s in Network1 should be able to access the internet through the
gateway-internet pc

can somebody recommend some good howtos or give me some kind of newbie
setup guide?


thanks a lot!

regards
andre

Andre Nottenkaemper wrote:

> Network1 Linux-Box Network2 Gateway-InternetPC
> 192.168.1.0/24 eth0<--> eth1 10.151.1.0/24 -> 10.151.1.1
>
> I would like to route everything from Network1 into Network2 but
> everything i tried didn?t work.
> Ip Forwarding is enables... thats the only thing i got to work properly!
>
>
> All Pc?s in Network1 should be able to access the internet through the
> gateway-internet pc
>
> can somebody recommend some good howtos or give me some kind of newbie
> setup guide?

Have you enabled IP-forwarding ?

echo "1" > /proc/sys/net/ipv4/ip_forward

Eggert

> Have you enabled IP-forwarding ?
>
> echo "1" > /proc/sys/net/ipv4/ip_forward
>
> Eggert

yea. thats the only thing i did and which i´m 100% sure i did it right
i believe i need to add some routes (route add blahblah) but i´m not sure
how and what i have to set up.

Andre Nottenkaemper wrote:

> can somebody recommend some good howtos or give me some kind of newbie
> setup guide?

http://www.netfilter.org/documentation/index.html#HOWTO
http://www.yolinux.com/TUTORIALS/Lin...rkGateway.html

Or you use one of the preconfigured firewall scripts:
http://monmotha.mplug.org/firewall/index.php

you only have to configure your interfaces eth0 and eth1, and the respective
IP ranges, and it works out of the box.
Eggert

On Fri, 17 Oct 2003, Andre Nottenkaemper <(E-Mail Removed)> wrote:
> I have a Problem with the following configuration:
>
> Network1 Linux-Box Network2 Gateway-InternetPC
> 192.168.1.0/24 eth0<--> eth1 10.151.1.0/24 -> 10.151.1.1
>
> I would like to route everything from Network1 into Network2 but everything
> i tried didn´t work.
> Ip Forwarding is enables... thats the only thing i got to work properly!
>
> All Pc´s in Network1 should be able to access the internet through the
> gateway-internet pc

- Network1 boxes need a default gw to Linux-Box eth0 IP.

- Linux-Box needs default gw to Gateway-InternetPC (which I assume you
did).

- Gateway-InternetPC and Network2 boxes need to use Linux-Box eth1 IP as
gw for 192.168.1.0/24 network (and Gateway-InternetPC needs to masquerade
Network1 along with Network2 to internet).

An alternate to last item would be for Linux-Box to masq Network1 traffic
going out its eth1.

--
David Efflandt - All spam ignored http://www.de-srv.com/
http://www.autox.chicago.il.us/ http://www.berniesfloral.net/
http://cgi-help.virtualave.net/ http://hammer.prohosting.com/~cgi-wiz/

You are using a 192.168.x.y network for your internal (protected) network...
this is good, but simple ip forwarding doesn't work with private (ie
illegal) addresses. You need to use some form of network address
translation (NAT), probably good to used IP Masquerade. You also need to
implement a set of firewall scripts, read the NAT and IP Filtering HOWTO's

Regards,

Sean
"Andre Nottenkaemper" <(E-Mail Removed)> wrote in message
news:fm3z6jtx06q5$.(E-Mail Removed)...
>
> > Have you enabled IP-forwarding ?
> >
> > echo "1" > /proc/sys/net/ipv4/ip_forward
> >
> > Eggert
>
> yea. thats the only thing i did and which i´m 100% sure i did it right
> i believe i need to add some routes (route add blahblah) but i´m not sure
> how and what i have to set up.
>