James,

On 10/13/25 8:01 PM, James H. H. Lampert wrote:
On 10/13/25 4:36 PM, Christopher Schultz wrote:

Do you have any reverse proxy or anything like that? Does Tomcat serve HTTPS directly? If not, it will not return HSTS headers.

Hmm. It is definitely serving HTTPS directly, because I'm seeing the same cert serial number as the one in the Java Keystore I personally plugged into their Tomcat server.

Okay. Can you show your Tomcat version number, security header filter config, including the <filter-mapping> from web.xml, the context-path of the web application, and a sample of:

curl -v https://example.com/yourapp/does_not_exist?

-chris


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