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Cisco ASA 5510 version 7.1(2) Kerberos Clock error

Posted on 2007-03-17
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Last Modified: 2009-03-21
OK, here is the issue. We are runnning a Cisco 5510 ASA Version 7.1(2). The VPN CLient was working correctly until the Network engineer start updating the MS2003 AD with service pack 1 and DST patches. Now the clients can't connect and I am getting an Error on the ASA of "113020: Kerberos error?: Clock Skew with server greater than 300 seconds" The Clock on the ASA matches with the servers in the AD to the second....

The Date and Time between the ASA 5510 and the Domain COntrollers are correct....but the clients can't connect....

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Question by:avatech
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batry_boy earned 2000 total points
ID: 18741671
Here is a link to what I found on that error message:

http://www.cisco.com/en/US/products/ps6120/products_system_message_guide_chapter09186a008055fd2b.html#wp3153583

The recommended action is to

"Synchronize the clocks on the security appliance and the Kerberos server."

However, you say you've already done this.  Have you rebooted the ASA since the DST updates took place?  Does the timezone on the ASA match the Kerberos server?
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by:avatech
ID: 18742024
Yes, that is the weird part....The date, month, year, timezone, and clock match exactly between the ASA and the Domain Controllers....I have rebotted the ASA twice....still searching. I have even eabled NTp on the ASA, and the NTP is the Domain contoller providing time for the domain, P.C.'s.

It worked saturday at night at midnight, and once they started the Service pack upgrades and installation of the DST MS patches, BAm....VPn is done...
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by:batry_boy
ID: 18742152
I would say that it's time to try upgrading to the 7.2(2) version of the ASA code...do you have access to the updated code?q
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by:avatech
ID: 18742172
dont you need a CCO login with Cisco for the Upgrade? I dont have the CCO login....but I do have a smartnet agreement with this device, I may ahve to dig out the invoice....
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by:batry_boy
ID: 18742321
Yes, you will need a CCO login to download the latest code.  If you have an active SmartNet contract on the ASA then you are most certainly entitled to having a login with download rights.  If you never registered your SmartNet with the device, then you probably were not issued an account.  They will want your ASA serial number which can be obtained by issuing a "show version" command from the CLI.  You will also need your invoice...
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by:avatech
ID: 18743309
Very weird problem. Thanks for all the responses, Once I find a solution I will post it. I am going to contact Cisco today and activate the smartnet agreement..

Thanks
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by:avatech
ID: 18782833
Thanks for your help.  Of all the frantic things not to check was issuing the reload after setting the time manually and changing the time zone from command line.
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