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Kerberos Ticket Renewal Lifetime


humbletech99
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I've got a fairly new 2003 Active Directory and recently I have had two independent reports of users not being able to get into a file server that they were able to one week before. After a log off and log on they have been ok.

I believe this is due to the fact the users haven't logged off in a week and their Kerberos credentials expired. So I've checked domain policy and it seems that the policies are as follows:

Maximum lifetime for service ticket		   600 minutes
Maximum lifetime for user ticket 10 hours
Maximum lifetime for user ticket renewal 7 days

The last one was of interest here so I just changed it to 60 days.

Maximum lifetime for user ticket renewal   60 days

I would like to ask what people's opinion's are on this, especially if there are any other veteran mcses out there, regarding the security implications of this change.

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