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Certificates Revocation Checking

Hi. We use the Web Gateway as our internet proxy. One thing I have come across in Windows is the need to allow the following:

  1. Windows OS to download root certificate from the Microsoft Root Certification Program
  2. Windows OS to download the certificate revocation lists of the main internet Certificate authorities like Verisign etc.

Is there any built in rules in the Gateway for this? 

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Re: Certificates Revocation Checking


for 1: No. Do you have any details about the URLs which are called so I can have a look?

for 2: For the Known CAs in the Web Gateway there are also lists which contains all the CRL and OCSP responder URLs. You can make a rule that allows access if a URL from these lists is queried. There is not an existing rule set, but the rule would be like

URL is in list <Known CRL URLs> OR
URL is in list <Known OCSP URLs> 

Action: Stop Cycle 


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