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Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

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Old 11-13-2003, 08:43 AM   #1
gtkmike
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Registered: Nov 2003
Distribution: RedHat
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Routing


Hello,

I am setting up a Linux box to route to the internet. I have two nics installed and working fine. One serves the network...no problems the other serves to connect to the internet via DSL (DHCP) no problems there.

When I try to hit the internet from client (Linux) box on the network, it will not go.

I have done this in the past using RedHat 7.3 and PPP, however, I am now using RedHat 9 and DSL.

On the client box, I have the linux router in /etc/hosts. I also set the default route from the client to that box.

On the Linux router I have set up masquerading as follows:

in the /etc/rc.d/rc.local file, I added ip masquerading for eth0

The DSL interface automatically adds to the route table an entry for the DHCP ip address, and a default route (which is to the DSL modem/router)

How should the router and client be configured to handle the default route going to the DSL route?

Any assistance or pointers in the right direction is greatly appreciated,

Thanks,
Mike
 
Old 11-13-2003, 09:21 AM   #2
zaphodiv
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Registered: Oct 2003
Distribution: Slackware
Posts: 388

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You either need to give the clients and the server NIC which talks to the clients static ip addresses (eg 192.168.1.x) or give the server a static address and run dhcpd on the server set to listen on the LAN NIC and give out ip's to the clients.

You set the default gateway on the clients to the server's LAN ip.
If NAT/MASQ is enabled correctly it should then work. You might need to
turn on ip forwarding on the server.
 
  


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