Network is Unreachable in Ubuntu 7.04

[RESOLVED] Network is Unreachable in Ubuntu 7.04

Hi - I have had this network up and running on my Ubuntu machine. Then it inexplicably stopped. Here is some more info, can you please help:

- ubuntu 7.04 64bit version running on dual core 3800+
- the command "host gmail.com" seems to return success ("gmail.com has address 64.233.171.83 ...." - meaning DNS is working correctly???)
- ping gmail.com returns: "connect: Network is unreachable"
- can not browse the internet or run any other program that reaches outside the router
- resolv.conf has the correct router address
- successfully can ping router from ubuntu
- other nodes on my lan can ping the ubuntu machine
- can access router with browser
- can print successfully to my wireless print server on the lan
- static ip is being setup correctly
- have done multiple reboots and /etc/init.d/networking restart all to no avail
- this seemed to start during the next session after i got moblock up and working

checked everything i about networks - can you suggest a next step to check or tweak??

thanks,
GT

 

Do you use a firewall on that system? If so, have you tried to disable it for testing purposes?

 

falko - thanks.

i had never installed a firewall. my worry is that in using moblock some of the config somewhere may have been changed to not all any sites outside 192.168.*.*. Perhaps this went against some of the setting used by a firewall.

so i checked iptables and all 3 of them look to be empty.

i am not sure what to look for in checking the routing statements. i ran the command but not sure how to interpret the output. could this be the area to check? what about other areas?

thanks,
jk