title: Jenkins 2.121.1 use TLS 1.0
body: <p>For legacy reasons I have to use TLS 1.0 with Jenkins. I have just downloaded the setup and installed.</p>
  
  <p>How do I configure Jenkins to use TLS 1.0 instead of the default TLS 1.2?</p>
  
  <p>Inside my Jenkins.xml I have this </p>
  
  <pre><code>&lt;executable&gt;%BASE%\jre\bin\java&lt;/executable&gt;
    &lt;arguments&gt;-Xrs -Xmx256m -Dhudson.lifecycle=hudson.lifecycle.WindowsServiceLifecycle -Dhttps.protocols=TLSv1 -Dmail.smtp.starttls.enable=true -jar "%BASE%\jenkins.war" --httpPort=8080 --webroot="%BASE%\war"&lt;/arguments&gt;
  </code></pre>
  
  <p>There are 2 issues here:</p>
  
  <p>1) Is this the correct way?</p>
  
  <p>2) How do I verify which TLS is being used?</p>