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WooYing

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Microsoft CA Server

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              I have a question if I want to setup certificate on AD, where all computers and servers join to the domain will automatically generate a cert and also set to expire if the computer is not on the domain for sometime, what would be the best way to go about that.  I also want to use the same cert for Cisco Wireless Access Points to handle authentication on TACAS.  Which means that I also want the ability to generate certificate for linux devices.  Also, I want the ability to run PKI encryption on Outlook.  Lots of requirements and I am hoping a all in one solution can handle this.  Thanks for reading.
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btan

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A certificate has a fixed valid period (1,2, 3 years up to the current validity of the CA certificate)
A certificate will not auto expire or will be auto-cancelled if the server is off for an extended period of time.  In AD the server credentials to access AD domain resources expires after tombstone period (90-180) days depending on your settings.

In the above links look at certificate revocation list (CRL) setup. This will allow you via the CA administration to revoke a certificate. Which you need to prevent users/systems from accessing wifi.
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