I have recently installed Ubuntu 14.04 LTS and my LAN Internet is not working. My wifi is working properly but I can access LAN Internet.
First it keep connecting but later it says you are now offline. On my windows 8 it is working fine.
Can anybody please help.
Here are the results of ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 20:89:84:40:63:01  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:16
Here are the sittings of my window 8 and how they look like:
Ethernet: Ethernet Tab
Broadband: Broadband Tab
More Link you can find in the @Rishabh answer.
 
     
    