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How do I allow self signed certificate in FF 61?

  • 3 replies
  • 1 has this problem
  • 2 views
  • Last reply by cor-el

kewi
kewi
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Hi

I am trying to access a site with a self signed certificate and there is no option to add a security exception. Get this code: SEC_ERROR_UNKNOWN_ISSUER

Have added a security exception through settings but still can't access the site.

What is going on??

Hi I am trying to access a site with a self signed certificate and there is no option to add a security exception. Get this code: SEC_ERROR_UNKNOWN_ISSUER Have added a security exception through settings but still can't access the site. What is going on??

All Replies (3)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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Can you post the certificate data?

You can check if there is more detail available about the issuer of the certificate.

  • click the "Advanced" button show more detail
  • click the blue error text (SEC_ERROR_UNKNOWN_ISSUER) to show the certificate chain
  • click "Copy text to clipboard" and paste the base64 certificate chain text in a reply

If clicking the blue error text doesn't provide the certificate chain then try these steps to inspect the certificate.

  • open the Servers tab in the Certificate Manager
    • Options/Preferences -> Privacy & Security
      Certificates: View Certificates -> Servers: "Add Exception"
  • paste the URL of the website (https://xxx.xxx) in it's Location field

Let Firefox retrieve the certificate -> "Get Certificate"

  • click the "View" button and inspect the certificate

You can see detail like the issuer of the certificate and intermediate certificates in the Details tab.

kewi
kewi Question owner
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BEGIN CERTIFICATE-----

MIID1zCCAr8CCQCyIVKOm3lw7TANBgkqhkiG9w0BAQsFADCBrDELMAkGA1UEBhMC QUExFDASBgNVBAgMC0REb1MtRmlsdGVyMRQwEgYDVQQHDAtERG9TLUZpbHRlcjEU MBIGA1UECgwLRERvUy1GaWx0ZXIxCzAJBgNVBAsMAkNBMSMwIQYDVQQDDBpwcm90 ZWN0QEREb1MtRmlsdGVyLmRvbWFpbjEpMCcGCSqGSIb3DQEJARYacHJvdGVjdEBE RG9TLUZpbHRlci5kb21haW4wHhcNMTgwMTA4MTA0MTI2WhcNMjcxMDA4MTA0MTI2 WjCBrTELMAkGA1UEBhMCQUExFDASBgNVBAgMC0REb1MtRmlsdGVyMRQwEgYDVQQH DAtERG9TLUZpbHRlcjEUMBIGA1UECgwLRERvUy1GaWx0ZXIxFDASBgNVBAsMC0RE b1MtRmlsdGVyMRswGQYDVQQDDBJERG9TLUZpbHRlci5kb21haW4xKTAnBgkqhkiG 9w0BCQEWGnByb3RlY3RARERvUy1GaWx0ZXIuZG9tYWluMIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEApcTkt6gJC/nhup2t7pMfO2Q0/N6D+faZGdUpNzuI 9OEBLpgJBDWLn3S/EkNoUd/sNxWZ1b6ZfZN6HhbBHg8L4iq/kMuGbak4tkQp8W3H dU9sBl4Sey4Xr73UlffEtp2Z/FctUkh64mAKMgRwZNEa4JOukbp/4uEMr6su3O8b 7lzLJEAJUfSYsxSrRJxFLzVJj+ZWJcnxPL3AWEnjDnqGkAP7Yiskw/2mS0t+yz3C YIYfIbbv/yGwPORsKM+b5fOISuSuIx1qu61gqnaHJmEkHz7tPk0IWSL7ipEiXNPp 58em6+x6R0eg+8Kcnf385WwDAXj1SUsyDqpWgRLsI1oyMwIDAQABMA0GCSqGSIb3 DQEBCwUAA4IBAQAW+7V+f4GsNGspP04xXnbiLjMAVyLllxySstANjorUe0C8/2bi K0bcpZudPfw2tY0XyDOqFsyi0gQlsqiD7IXOyM2uXZ57ymc/GhcTCPGaKvq23OKS lryKu67nDHEFxM4do+bRWkHi8WkTqAxxJmBy2+0J6Aky3j7Zrr2DsloDMZSItEQt n4eMRU4+yJWD5pC+WpTexZGKFdSHQxdpZs1iowB0uIXQmiLWQEMSNrXZArqv4iwk Byoo1p5Mb6u1TgMEX+yhs8ijlGwU1WH85uh5Pl0y0QnVu6M4Q+beZ4895OefTxBm MpUGLeCV+XmGyP6hnyF+7ouHYgkdRI5TRhof

END CERTIFICATE-----
cor-el
cor-el
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  • Top 10 Contributor
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This issuer of the certificate is DDoS-Filter.domain. A Google search brings up results like these that seem to indicate that this is a problem with the website that is protected with some DDos protection service that may not work properly and their certificate is send instead of the certificate from the website.