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JCMATTOS_41723
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Jan 17, 2008

Wildcard Certificates utilization?

We have dual LTM 8400's 9.4.1 and were looking into using wildcard certificates for our entire enterprise environment. We were wondering first does our current platform support this feature? And what kind of impact differences can we expect regarding utilization, performance, etc...Thx in advance!

5 Replies

  • SOL6823 details how to genarate a CSR for a wildcard cert (Click here).

     

     

    As for resources, are you asking if it's more resource intensive to decrypt SSL using a wildcard cert, or are you asking more generally about how much more CPU/memory it will take decrypting SSL versus passing it through encrypted?

     

     

    Aaron
  • Thx Hoolio, more along the lines of personal experience of using this feature in a production environment on this platform. A question was raised if using wildcard certs, will require more/less resources than using standard certs?
  • Posted By hoolio on 01/21/2008 8:17 AM

     

     

    SOL6823 details how to genarate a CSR for a wildcard cert (Click here).

     

     

    As for resources, are you asking if it's more resource intensive to decrypt SSL using a wildcard cert, or are you asking more generally about how much more CPU/memory it will take decrypting SSL versus passing it through encrypted?

     

     

    Aaron

     

     

     

    HI Aaron,

     

     

    I looked at the above solution and wanted to make sure.. that if I generate a CSR using

     

     

    *.apple.mysite.com this would cover everything under apple.mysite.com for ex:

     

    one.apple.mysite.com,

     

    two.apple.mysite.com, and

     

    apple.mysite.com;

     

     

    however it would not cover orange.mysite.com or noneapple.mysite.com

     

     

    Thanks,

     

    Jay
  • I have been using wildcard certs for some time (on BigIP and WebLogic), and have never seen nor heard of any issues regarding resources.

     

     

    I guess when the OpenSSL does hostname verification it sees the wilddcards and simply ignores that substring - in theory sounds plike a pretty cheap operation.
  • I agree, the performance for using a wildcard cert versus an explicit cert should be negligible.

     

     

    Aaron