000018889 - How many levels of Sub-CA chaining are supported in Sentry CA 3.x?

Document created by RSA Customer Support Employee on Jun 16, 2016Last modified by RSA Customer Support Employee on Apr 21, 2017
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Article Number000018889
Applies ToSentry CA 3.x
TechNote 0131
IssueHow many levels of Sub-CA chaining are supported in Sentry CA 3.x?
Have the Sub-CA chaining more than 11 levels.
When starting Sentry CA services, the following error message appears:
The secure directory server does not appear to be reachable.  Remember that you must start it before attempting to start the Web server. You will be unable to make client-authenticated connections to this server until you restart it with a running directory server.

test.xxxxx.com: error setting default verify locations:
[unable to contact directory server]
CauseSentry CA supports up to 11 chained CAs.  Exceeding this limit will result in the above error message on startup.
ResolutionDo not setup the Sub-CA chaining for more than 11 levels.

For Netscape browsers to correctly follow this chain, all intermediate CAs must have the appropriate netscape_cert_type extension for the given protocol.  So for SSL, intermediate CAs MUST have bit 5 (SSL CA) asserted (similarly, for S/MIME, intermediate CAs would need bit 6 - S/MIME CA - asserted).  The Root CA does not need this assertion.
Legacy Article IDa4075

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