DNS Woes

[Aaron Matteson]

stucklenp at charter.net became daring and sent these 1.3K bytes,
> I have a challenge: since running "yum update" and blindly  accepting all the packages and then rebooting, I have not been able to get my Fedora box on the Web.  Since that system is my firewall box it is really important that I get it running again. Note that I get the same symptoms with or without the firewall running.
> 
> The NIC is configured to "Automatically obtain IP address settings with DHCP" and "Automatically obtain DNS information from provider" (I have tried manually setting DNS addresses as well.)
> 
> When the network service is started, the NIC does get a valid IP from the ISP, as verified by the ISP.  As well, I see the lease information in the messages log.
> "...dhclient: bound to <myIP> -- renual in 13961 seconds...
> ifup: done... 
> network: Bringing up interface etho: succeeded"
>  
> 
> Other Symptoms: 
> ping <external IP> results in "Destination port Unreachable."
> ping <leased IP> Works fine.
> 
> Redhat Network Configuration show the NIC active and "ok"
> resolve.conf contains the correct IPs for the ISP's DNS servers.
> 
> To add insult to injury, when I plug my Windoze box into the cable modem and set its IP to use DHCP, I have no problem attaching to the Web. 

I had this problem once albeit was a coincidence, but try powering off
your modem (pull the power plug) and powering it back up. This fixed me
up.

-- 
  0 1 0  Aaron M Matteson - GnuPG:0xD144B7FF
  0 0 1  Real programmers don't document. If it was hard to write,
  1 1 1  it should be hard to understand!
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