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Why does Firefox get "SecureConnectionFailed - PR_CONNECT_ABORTED_ERROR" when connecting to website that has the SHA1 hash disabled?

Security consultants have advised that cipher suites using the SHA1 hash are no longer considered secure and should not be enabled. Using the nmap tool we can identify wh… (læs mere)

Security consultants have advised that cipher suites using the SHA1 hash are no longer considered secure and should not be enabled.

Using the nmap tool we can identify which cipher suites use the SHA1 hash.

On our webserver, (IIS version 8.5 on Windows 2012 R2 ) if we eliminate cipher suites that contain the SHA1 hash, the Firefox browser cannot browse the site. Error displayed = Secure Connection Failed - PR_CONNECT_ABORTED_ERROR We tested versions up to Firefox ( v75.0 ).

Other browsers such as Chrome and IE have no issues browsing our site with the SHA1 hash disabled.

Once the SHA1 hash is enabled, Firefox works fine. Seeking a solution that will satisfy the security folks and our Firefox users.

Asked by SPI_help for 2 måneder siden

Last reply by jscher2000 for 2 måneder siden