I am using Ubuntu 10.04 with KDE on it.
I am facing a problem in connecting to a wired LAN internet connection.
I want to connect to wired internet connection with static IP and authentication.
How can I manage this via terminal?
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How to configure the network interface using the terminal
You can configure a network interface from the command line using the networking utilities. You configure your network client hosts with the command line by using commands to change your current settings or by editing a number of system files. To configure your network interface card to automatically connect when wired cable is connected you can follow this "simple" steps:
To configure DHCP address, edit the
/etc/network/interfaces and enter the following lines replacing
eth0 in the example with your network interface card:
`sudo nano /etc/network/interfaces` You should see something similar to this: auto eth0 iface eth0 inet dhcp in my computer it looks like this: auto lo iface lo inet loopback
So if your network card appears as
eth2 for example then you would leave the file like this:
auto eth2 iface eth2 inet dhcp
Same procedure as above but you would need to include more information.
Like above, replace
eth0 with your networks card name:
sudo nano /etc/network/interfaces
auto eth0 iface eth0 inet static address 192.168.0.100 gateway 192.168.0.1 netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.0.255
After entering all the details which are needed for your static IP you would need to restart networking services using the following command:
sudo /etc/init.d/networking restart
You can add hostname and/or IP addresses to the file
/etc/hosts for static lookups.
To cause your machine to consult with a particular server for name lookups you simply add their addresses to
For example a machine which should perform lookups from the DNS server at IP address 192.168.0.1 would have a
resolv.conf file looking like this:
sudo nano /etc/resolv.conf
search test.com nameserver 192.168.0.1
in my case it looks like this:
search cantv.net nameserver 127.0.0.1
most answers on this issue are most likely to confuse readers when demostrating what to put in the
/etc/resolv.conf because they use local addresses for the nameserver.
"For example a machine which should perform lookups from the DNS server."
Here DNS server and nameserver mean the same thing. So instead of placing a LAN address in there, put an actual DNS server address. (ie. Google DNS server)
this link explains the used of the resolv.conf file in more depth. https://theos.in/desktop-linux/resolve-conf-linux-example/
In my case, what worked is:
echo "nameserver 184.108.40.206" >/run/resolvconf/resolv.conf ping -c 5 www.google.com
If it does not work, run:
ip link set enpxxx down ip link set enpxxx up dhclient enpxxx
ping should work now.
ping -c 5 www.google.com
I found this solution on this page of the ubuntu (french) wiki