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Old 07-15-2004, 02:00 PM   #1
Registered: Mar 2004
Posts: 43

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urgent:: internet connection sharing: DNS server not working


I am trying to put my linux box as a server for sharing inet connections (since win ICS sucks)

I am having two ethernet adapters : eth0->internet, eth1->lan

Since I use mandrake 10, it comes with a handy tool that configures theinternet connection sharing.

Now, I have setup the connection such that my comp can connect to internet thro eth0 and can ping the clients in the lan thro eth1. Also, the clients can ping an external ip address (eg. google) thro my machine.

But, if I ping "", it doesnt work. I am afraid it is the problem with DNS server. but, i dont know what and where to do anything.

Please help me in this.

Old 07-15-2004, 11:43 PM   #2
Registered: Jul 2004
Location: Rio de Janeiro - Brazil
Distribution: Conectiva 10 - Conectiva 8 - Slackware 9 - starting with LFS
Posts: 519

Rep: Reputation: 34
Your clients need to know its gateway and dns servers. You can do this in 2 ways. First, but hard to maintain is to configure your clients giving the dns address provided by your ISP. If you have windows clients, go to network neighborhood, choose nic card->tcpip->properties and configure the "dns tab". If your client is linux or other kind of *nix, edit "/etc/resolv.conf", inserting one line with "nameserver" for each dns server you have.
The second way is to setup a dns service in you linux server, looking for your ISP and serving your network. This way all you have to do is configure your clients, telling its dns server is the ip of your server once. If you have to change your dns server you have only to update your server.
I suggest you to install the software "dnsmasq" which is too easy to configure in your server.
As a refinement, you may install dhcpd in your server to distribute ip addresses to your clients and eliminate the need to configure each client. The dhcpd will give the ip address to the client and configure the dns and gateway.


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