Verifying Certificate Validity Using Certificate Revocation List
You can verify the validity of the certificate by using a Certificate Revocation List (CRL). You can also delete an unnecessary Certificate Revocation List.
1.
Press 
(Settings/Registration).
(Settings/Registration).2.
Press [Management Settings] → [Device Management] → [Certificate Settings].
3.
Press [Certificate Revocation List (CRL)] → select the next step.
Verify the validity of the certificate:
Select the certificate revocation list for the certificate you want to verify → press [CRL Details] → [Verify CRL].
Confirm the validity of the certificate with the displayed result.
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IMPORTANT
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For more information on the check result, see "Network/Security."
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Press [OK].
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NOTE
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To check the certificate authority, press [Serial No. List].
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Delete the certificate revocation list:
Select the certificate revocation list you want to delete → press [Delete].
Press [Yes].
4.
Press [OK] → [OK].
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IMPORTANT
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For instructions on how to install a certificate revocation list, see "Installing a Certificate File."
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NOTE
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Up to 50 certificate revocation lists can be registered.
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