 | | | Redhat NTPD Clock | Redhat NTPD Clock 2006-05-25 - By John Wirt
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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@(protected) -
>- VitalStream, Inc. http://www.vitalstream.com -
>- -
>- Change is inevitable, except from a vending machine. -
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>
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