Re: nat and dhcp
On Sun, 2004-03-21 at 04:13, uzoma nwosu wrote:
> I'm trying to turn my debian box into nat server. So far, I've got the
> kernel configured with all the netfilter stuff that the IP
> Masquerade-howto on tldp.org said (I'm running 2.4.24, with sarge/sid).
> I've installed dhcpd and it seems to run fine.
> So here's my problem: my laptop (which has a dhcp client thats works on
> campus) can ping my deskstop but that's all. It can't reach the net.
> I have done the echo 1 >/proc/sys/net/ipv4/ip_forward thing to turn it
> on and still nothing. So here is my dhcp.conf and my
> /etc/network/interface file snippets. ANY help would be greatly
> appreciated.
>
> king:/proc/sys/net/ipv4# more /etc/dhcpd.conf
> #
> # Sample configuration file for ISC dhcpd for Debian
> #
> # $Id: dhcpd.conf,v 1.4.2.2 2002/07/10 03:50:33 peloy Exp $
> #
>
> # option definitions common to all supported networks...
> option domain-name "mytalon.com";
> #option domain-name-servers king.mytalon.com;
>
> option subnet-mask 255.255.255.0;
> default-lease-time 600;
> max-lease-time 7200;
>
> #my declared subnet for eth1
> subnet 192.168.0.0 netmask 255.255.255.0 {
> range 192.168.0.1 192.168.0.10;
> option broadcast-address 192.168.0.255;
> # option routers prelude.fugue.com;
> }
>
> king:/proc/sys/net/ipv4# more /etc/network/interfaces
> # /etc/network/interfaces -- configuration file for ifup(8), ifdown(8)
>
> # The loopback interface
> auto lo
> iface lo inet loopback
>
> # The first network card - this entry was created during the Debian
> installation
> auto eth0
> iface eth0 inet dhcp
>
> #Second network card - 3Com vortex
> auto eth1
> iface eth1 inet static
> address 192.168.0.1
> netmask 255.255.255.0
> network 192.168.0.0
> broadcast 192.168.0.255
>
>
> Something else that I don't completely understand (this is my first time
> ever creating a network) is that my laptop picks up 192.168.2.1 from
> DHCPACK when ifup eth0. Shouldn't it receive on 192.168.0.1?
>
> thanks,
>
> Uzoma
>
I see you use dpcp on eth0.
That could be the problem if you dont get ip-adress in range
192.168.0.1-10.
But the first thing i would do is to deklare dns.
DO NOT USE A NAME LIKE eg. king.mytalon.com.
Use numbers eg 123.123.123.123
Restart service and reconnect laptop and see if ok.
Kenneth.
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