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HTTPS Inspection - Chain Errors

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Hi all,

I have a gateway running 80.20 M2 and I recently enabled SSL Inspection for a small group. It is working correctly (I see our cert in the browser and no warnings), but I see some strange errors in the logs and sometimes in the browser about the "certificate chain not signed by a trusted CA".

When I look at the certificate, it seems to be missing the original CA and didn't insert our CA/cert.

For example, normal certs look like: DigicertCA-->www.CDWG.com
Inspection working: MYEnterpriseCA-->www.CDWG.com
When I see errors it looks like: www.CDWG.com

Am I missing something?

Thanks!

--Ben

2019-03-29 12_45_01-csd8-management - Remote Desktop Connection Manager v2.7.png2019-03-29 12_54_01-Certificate Viewer_ “www.cdwg.com”.png

 

3 Solutions

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Re: HTTPS Inspection - Chain Errors

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Hi @Benjamin_Lamber 

the DigiCert certificate is not in R80.20 root certificate store.

So you get a certificate chain error.

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Re: HTTPS Inspection - Chain Errors

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Thank you, this was ultimately the issue. For some reason Check Point did not have Digicert Global Root G2/G3 in the certificate store. I was able to download them from their support site and add them.

Is there a way to ensure that the Check Point cert store is being automatically updated, apart from checking the box?

Thank you very much!

--Ben

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Re: HTTPS Inspection - Chain Errors

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It’s impossible for a gateway to be running R80.20.M2 because that’s a Management-only release. What is the gateway actually running here? Also, is this happening consistently for specific sites or at random?

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Re: HTTPS Inspection - Chain Errors

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Hi @Benjamin_Lamber 

the DigiCert certificate is not in R80.20 root certificate store.

So you get a certificate chain error.

View solution in original post

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Re: HTTPS Inspection - Chain Errors

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Here the root certificate. This certificate is not in the root certificate store.

Screenshot_20190330-180412_Chrome.jpg

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Re: HTTPS Inspection - Chain Errors

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Here the intermediate certificate:

Screenshot_20190330-183202_Chrome.jpg

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Re: HTTPS Inspection - Chain Errors

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And here the web server certificate:

Screenshot_20190330-182852_Chrome.jpg

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Re: HTTPS Inspection - Chain Errors

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Sorry for the german names in the pictures. I write on a samsung tab s4 and I cannot change the browser to english.

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Re: HTTPS Inspection - Chain Errors

Jump to solution

Thank you, this was ultimately the issue. For some reason Check Point did not have Digicert Global Root G2/G3 in the certificate store. I was able to download them from their support site and add them.

Is there a way to ensure that the Check Point cert store is being automatically updated, apart from checking the box?

Thank you very much!

--Ben

View solution in original post