Ubuntu

Will not ping other ip's

Asked by ED on 2007-09-26

Here is a problem I don't understand:

I have 2 Dell PC's and a Systec port server with consecutive IP addresses connected to a hub and the company lan

The one PC with 7.04 loaded new, no other OS, will not ping the windows box or the port server.
I can ping the Ubuntu box from the windows box. The ubuntu box will access the internet, (Ubuntu, Yahoo, Google etc) with Firefox.

ernie@Sparrow:~$ sudo ethtool -S eth0
NIC statistics:
     tx_deferred: 28
     tx_max_collisions: 0
     tx_multiple_collisions: 9
     tx_single_collisions: 8
     rx_bad_ssd: 0
ernie@Sparrow:~$ sudo ethtool -r eth0
ernie@Sparrow:~$ sudo ifconfig -s
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0 1500 0 1086764 0 0 0 1614 0 0 0 BMRU
lo 16436 0 0 0 0 0 0 0 0 0 LRU
ernie@Sparrow:~$ netstat -M
netstat: no support for `ip_masquerade' on this system.
ernie@Sparrow:~$ sudo ifconfig eth0
Password:
eth0 Link encap:Ethernet HWaddr 00:C0:4F:2E:DD:11
          inet addr:144.191.62.239 Bcast:144.191.62.255 Mask:255.255.255.0
          inet6 addr: fe80::2c0:4fff:fe2e:dd11/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:1358560 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4839 errors:0 dropped:0 overruns:0 carrier:0
          collisions:248 txqueuelen:1000
          RX bytes:126044005 (120.2 MiB) TX bytes:623353 (608.7 KiB)
          Interrupt:11 Base address:0x6000
ernie@Sparrow:~$ ping www.yahoo.com
ping: unknown host www.yahoo.com
ernie@Sparrow:~$ ping www.google.com
ping: unknown host www.google.com
ernie@Sparrow:~$ ping 144.191.62.238
PING 144.191.62.238 (144.191.62.238) 56(84) bytes of data.