Redhat NTPD Clock

[John Wirt]

Hmm..can you  tell me how to set the security level?

Thank you, Rick.

John Wirt



Rick Stevens wrote:

>On Thu, 2006-05-25 at 00:58 -0400, John Wirt wrote:
>  
>
>>Thanks you several of you, I have RedHat booting to completion just fine 
>>except for one problem.
>>
>>Near the end of the boot sequence, RedHat apparently tries to connect to 
>>some time standard at 66.187.224.4. The sequence is:
>>
>>
>>  ntpd: Opening firewall for input from 66.187.224.4 port 123
>>  ntpd: Opening firewall for input from clock.redhat.com port 123
>>  iptables v 1.2.8: host/network clock.redhat.com not found [FAILED]
>>
>>     use iptables -h for assistance.
>>
>>However, iptables -h doesn't provide any help.
>>
>>What is the problem? How can I fix it?
>>    
>>
>
>You must have the firewall open ports for TCP and UDP port 53 (DNS).
>What's probably happening is that the system is trying to resolve
>clock.redhat.com (66.187.224.4 and 66.187.233.4) and can't because the
>firewall is blocking DNS issues.  This happens if you used the "maximum"
>setting on system-config-securitylevel as that blocks EVERYTHING
>(including DNS).  Use the "medium" security setting.
>
>----------------------------------------------------------------------
>- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
>- VitalStream, Inc.                       http://www.vitalstream.com -
>-                                                                    -
>-        Change is inevitable, except from a vending machine.        -
>----------------------------------------------------------------------
>
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