View Full Version : [ubuntu] Networking or security problem ?

February 25th, 2011, 10:51 AM
Please see this post (http://ubuntuforums.org/showthread.php?t=1693652) , as I'm not 100% convinced that this is a security (firewall) problem.

Could be network, I don't know. :confused:

February 25th, 2011, 12:24 PM
I can't ping 'out' to the internet, either by IP or by domain name on the client computer, yet can do 'all' on the gateway.

February 25th, 2011, 01:20 PM
The only way I could get the client to have access to the internet, was to reboot the gateway computer into Windows XP, .. works fine.

Any way I can check/double check that all the network settings are correct ?


February 27th, 2011, 03:53 AM
The setup is as follows ..

Internet <<==>> ppp0 <> Ubuntu gateway <> eth0 <<==>> Client PC

The gateway computer has the 'share' option enabled, and the client computer has the gateway IP address set in NM. I use NM for both computers.

Gateway computer
Client computer

Problem - can connect to the internet okay with gateway, but NOT client.

Here is the ifconfig from gateway

removed per request.

Here is the ifconfig from client

removed per request

I have GUFW installed on both computers, but there is nothing in the logs to suggest a 'block'.

If I restart the network on the gateway, I have to do this again ..

sudo ifconfig eth0

I can also reboot the gateway into Win XP, and that connects okay, AND the client can then connect.

So is it the Ubuntu gateway or the Ubuntu client that needs some tweaking ?


February 27th, 2011, 08:54 AM
Can UFW/GUFW do ICS ??

February 27th, 2011, 01:11 PM
I still can't access the internet from the client computer. :(

February 28th, 2011, 01:55 AM
Anyone ??

February 28th, 2011, 08:09 AM
Closing this, as it is a duplicate. If you want a post moved, please use the "report abuse" link and ask for it to be moved.

I will move your other thread to the networking form, as what you want to do is a networking issue.