After upgrading to 27.0.1, I can no longer access one secure site. I now get Error code: ssl_error_bad_mac_alert. This worked before the update.

Question

I am trying to access the GUI administration page of my wireless controller. It is using a cert issued by the vendor that makes it, so the names do not match. I have created a permanent exception for the certificate. Whenever I try to access the site, I now get the following error every time:
Secure Connection Failed
An error occurred during a connection to 172.24.6.10:4343. SSL peer reports incorrect Message Authentication Code. (Error code: ssl_error_bad_mac_alert)
The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
Please contact the website owners to inform them of this problem. Alternatively, use the command found in the help menu to report this broken site.
This page worked fine before the most recent update.
Is there a setting or something I can change to allow this page to load?

Answer 1

Thank you both for your suggestions. I had seen the possible solutions of time and ipv6, but those did not help. I cannot recycle the wireless controller, as that would disrupt my business's network too much.
Cor-el, your answer was what worked for me. I went through each security.ssl3. setting like you suggested and found that
security.ssl3.dhe_rsa_des_ede3_sha is where the error was coming from.
With that one set to false, I was able to connect to the admin page again. When I set it back to true, the error comes back.
I also found that specifically any one of the following were needed for teh connection to work as long as the one above was false.
security.ssl3.rsa_aes_128_sha
security.ssl3.rsa_aes_256_sha
security.ssl3.rsa_des_ede3_sha
so I am leaving the one that caused the error disabled and it is working again.
Thanks!