View Full Version : [ubuntu] I see the LAN but can't browse the web

March 13th, 2009, 12:29 PM
I have Ubuntu 8.10 installed on a pc I use as a test web server. Everything was fine but I changed from DHCP to static IP because I had problems to reach the apache server from the other PCs. I am not 100% sure, but I think that everything was still working.

Then I modified the network domain in the Samba config file. And another thing I noticed is that while making network configurations I deleted by mistake the default cabled connection and since I created a new one there isn't a MAC address anymore.

Morale: the LAN works fine, but I can't browse the web anymore.

any ideas?


March 13th, 2009, 12:31 PM
Don't use Network Manager to setup a Static IP, it's just pathetic.

Anyway, you will just need to do it all manually. Don't forget to add a DNS to resolv.conf.

March 13th, 2009, 12:37 PM
Intrepid appears to have issues with static ip's and network manager. Actually though, the solution, often, is to do as you have done and delete the default connection and create one from scratch.

grab you mac address from runing

ifconfig -a

in a terminal. Most likely your ethernet connection will be eth0, grab the mac address associated with that (it'll look something like this 00:1b:61:b5:cd:f3)

Once you have that, just create a new connection.

Hope that helps

March 13th, 2009, 01:20 PM
I did find the MAC address but nothing changed.

Regarding setting the network configuration manually unfortunatelly I have no clue on how to do it. Can you help?

One additional note: I also tried to switch back to DHCP but I still can't browse the web.

March 13th, 2009, 02:00 PM
It really should work with dhcp, try deleting the connection and making a new one using dhcp, and the mac address of your card.

As for doing it manually:


you need to edit /etc/network/interfaces and make sure that it contains something like:

auto eth0
iface eth0 inet static

using your relevant ip addresses obviously. if you have the line:

iface eth0 inet dhcp

you need to replace it with this block of code, otherwise just add it to the file.

Make sure that you do not delete the lo interface or anything else in there :)

Hope that helps

March 13th, 2009, 06:09 PM
It works!

Actually it has been enough to delete the connection and create a new one with the same details and MAC address.

Thanks a lot for your help and the incredibly quick replies. This forum rocks!!!:D

March 13th, 2009, 06:12 PM
Glad to have helped :)