start the server $ ./wildfly/bin/standalone.sh in WildFly CLI configure OpenSSL security provider /core-service=management/security-realm=ApplicationRealm/server-identity=ssl:write-attribute(name=protocol,value=openssl.TLS) and restrict enabled protocols to just TLS 1.0 /core-service=management/security-realm=ApplicationRealm/server-identity=ssl:write-attribute(name=enabled-protocols,value=[ "TLSv1" ] now reload the server to make configuration changes take effect reload in new shell, perform HTTP request against server and check what TLS version is utilized $ curl -k -vvv https: //127.0.0.1:8443 > /dev/ null In my case, I can see that TLSv1.2 is being utilized for the connection. $ curl -k -vvv https: //127.0.0.1:8443 > /dev/ null * Trying 127.0.0.1:8443... * TCP_NODELAY set % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* Connected to 127.0.0.1 (127.0.0.1) port 8443 (#0) * ALPN, offering h2 * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/pki/tls/certs/ca-bundle.crt CApath: none } [5 bytes data] * TLSv1.3 (OUT), TLS handshake, Client hello (1): } [512 bytes data] * TLSv1.3 (IN), TLS handshake, Server hello (2): { [108 bytes data] * TLSv1.2 (IN), TLS handshake, Certificate (11): { [694 bytes data] * TLSv1.2 (IN), TLS handshake, Server key exchange (12): { [300 bytes data] * TLSv1.2 (IN), TLS handshake, Server finished (14): { [4 bytes data] * TLSv1.2 (OUT), TLS handshake, Client key exchange (16): } [37 bytes data] * TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1): } [1 bytes data] * TLSv1.2 (OUT), TLS handshake, Finished (20): } [16 bytes data] * TLSv1.2 (IN), TLS handshake, Finished (20): { [16 bytes data] * SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384 * ALPN, server accepted to use http/1.1 * Server certificate: * subject: CN=localhost * start date: Oct 30 09:07:52 2019 GMT * expire date: Oct 27 09:07:52 2029 GMT * issuer: CN=localhost * SSL certificate verify result: self signed certificate (18), continuing anyway. } [5 bytes data] > GET / HTTP/1.1 > Host: 127.0.0.1:8443 > User-Agent: curl/7.65.3 > Accept: */* > { [5 bytes data] * Mark bundle as not supporting multiuse < HTTP/1.1 200 OK < Connection: keep-alive < Last-Modified: Thu, 03 Oct 2019 07:37:54 GMT < Content-Length: 1504 < Content-Type: text/html < Accept-Ranges: bytes < Date: Wed, 30 Oct 2019 09:09:38 GMT < { [5 bytes data] 100 1504 100 1504 0 0 94000 0 --:--:-- --:--:-- --:--:-- 94000 * Connection #0 to host 127.0.0.1 left intact