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Paul WolffFlag for United States of America

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Windows Firewall - Outbound traffic for Certificate Verification

We have an internal program that uses a public certificate for security. We need to lock down the application on devices so they do not have any access outside of the program (client connects to a server using several ports) and Logmein (for remote support).

I am using the Windows Firewall to block outbound traffic except for traffic we will allow for the program. The problem I am having is that the application will not run because the public certificate will not verify the certificate chain (for security on the user login). I have tried to turn off settings for revocation in Internet Options, but that is not what the problem is. It seems the app needs access to the internet to verify the certificate. So in Windows Firewall, I need to know what exactly do I need to open outbound?
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kevinhsieh
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Thanks for the info. So although there was no way to allow the specific URL for the CRL field on the certificate, I was able to work around this to block traffic and still allow this outbound using proxy. I was able to allow the URL and then the application security was functioning as needed! Thanks!