Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Re: SNI Sites not taking correct certificate.

Hi Militza,

 

You can use the openssl command-line tool to check if SNI is configured correctly.

Here's a command you can run:

openssl s_client -servername aks4.test.com -connect aks4.test.com:443 -tlsextdebug

This command will show you the details of the SSL/TLS handshake, including whether the server is using the correct certificate for the specified hostname

Check and share the test results.

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