[lug] Live boot network problem

[Glenn Murray]

Hi,

Thanks for all the responses (after I went to bed).  Here is some
background.  The new T440p comes with a new job, at Oracle, so I'm
connecting to the company network.  All of the configuration is
default---I've made no changes.   I've leaned that the corporate
firewall/proxy/whatever blocks external ping, so my attempt to ping Google
was pointless.  However, I can't open Google in a browser.

Thanks for your help.
Glenn

Here are the local pings asked about above.

kubuntu at kubuntu:~$ ping 10.135.122.1
PING 10.135.122.1 (10.135.122.1) 56(84) bytes of data.
64 bytes from 10.135.122.1: icmp_seq=1 ttl=255 time=0.490 ms

kubuntu at kubuntu:~$ ping 10.135.123.1
PING 10.135.123.1 (10.135.123.1) 56(84) bytes of data.
>From 10.135.123.128 icmp_seq=1 Destination Host Unreachable

I can ping my neighboring co-worker at 10.135.123.204 on
both Linux and Win7, so the problem is getting out of the
local network.

It connects under Win7:

C:\Users\gamurray>ipconfig
Windows IP Configuration
Ethernet adapter Bluetooth Network Connection:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
Wireless LAN adapter Wireless Network Connection:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : us.oracle.com
Ethernet adapter Local Area Connection:
   Connection-specific DNS Suffix  . : us.oracle.com
   IPv4 Address. . . . . . . . . . . : 10.135.123.234
   Subnet Mask . . . . . . . . . . . : 255.255.254.0
   Default Gateway . . . . . . . . . : 10.135.122.1

Pinging neighbor on Win7:

C:\Users\gamurray>ping 10.135.123.204
Pinging 10.135.123.204 with 32 bytes of data:
Reply from 10.135.123.204: bytes=32 time=1ms TTL=128


On Wed, May 14, 2014 at 12:31 AM, David L. Anselmi <anselmi at anselmi.us>wrote:

> Glenn Murray wrote:
>
>>
>> This looks like to me that DNS worked:
>>
>> kubuntu at kubuntu:~$ ping www.google.com
>> PING www.google.com (173.194.46.18) 56(84) bytes of data.
>>
>>> From 10.135.122.1 icmp_seq=2 Destination Host Unreachable
>>> From 10.135.122.1 icmp_seq=3 Destination Host Unreachable
>>>
>>
> Since 122.1 is the gateway, it would appear that it can't reach google.
>  So the problem may be at your router.
>
> Can you ping 122.1?  If so kubuntu is probably fine.
>
> But the /23 on kubuntu might not match the router (if it's a /24 for
> example).  That will make your head hurt worse than using a /23 in the
> first place.
>
> How did eth0 get configured?
>
>
> Dave
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