Results 1 to 3 of 3
I have two interfaces on my ubuntu 8.04 machine, eth0 and eth1. eth0 is for internet(working) and eth1 uses dhcp with a static ip(not working) for my other computers on ...
Enjoy an ad free experience by logging in. Not a member yet? Register.
- 08-15-2008 #1Just Joined!
- Join Date
- Jun 2008
- Posts
- 84
Setting up a home network problem
I have two interfaces on my ubuntu 8.04 machine, eth0 and eth1. eth0 is for internet(working) and eth1 uses dhcp with a static ip(not working) for my other computers on the network.
My windows machine can't ping domain names or ips when connected to eth1. It acquires an ip address from my dhcp3 server and can ping the static ip, but nothing on the internet. I also tried disabling ufw.
-----------------------
/etc/network/interfaces
auto lo
iface lo inet loopback
iface eth0 inet dhcp
iface eth1 inet static
address 192.168.0.1
netmask 255.255.255.0
gateway 192.168.0.1
auto eth0
auto eth1
-----------------------
/etc/dhcp3/dhcpd.conf
default-lease-time 600;
max-lease-time 7200;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.0.255;
option routers 192.168.0.1;
option domain-name-servers 64.71.255.198;
option domain-name "shwick.mydomain";
subnet 192.168.0.0 netmask 255.255.255.0 {
range 192.168.0.2 192.168.0.100;
}
-----------------------
/etc/default/dhcp3-server
INTERFACES="eth1"
-----------------------
/etc/resolv.conf
search phub.net.cable.rogers.com
nameserver 64.71.255.198
I'm thinking this has something to do with the gateway. When I enter a gateway in interfaces for eth1, interface eth0 can't connect/ping the internet.
I read through the ubuntu server guide but I'm really confused right now, any help is welcome.
- 08-15-2008 #2
Have you enabled IP Forwarding?
/etc/sysctl.conf
You would also need to masquerade the internal network.Code:net.ipv4.ip_forward = 1
If for example your internal network is 192.168.0.0/24 the below would apply:
Code:iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -j MASQUERADE
- 09-24-2008 #3Just Joined!
- Join Date
- Jun 2008
- Posts
- 84
Sorry for the long time before reply.
The problem was that I didn't have port forwarding enabled. I disabled ufw because it was going to cause problems moving forward with other services. I used this as a guide to enable port forwarding with iptables: https://help.ubuntu.com/community/In...nectionSharing


Reply With Quote
