TLS版本

1) setProtocol="TLS" will enable SSLv3 and TLSv1
2) setProtocol="TLSv1.2" will enable SSLv3, TLSv1, TLSv1.1 and TLS v1.2
3) setProtocol="TLSv1.1" will enable SSLv3, TLSv1, and TLSv1.1
4) setProtocol="TLSv1" will enable SSLv3 and TLSv1
5) setProtocol="SSL" will enable SSLv3 and TLSv1
6) setProtocol="SSLv3" will enable SSLv3 and TLSv1
7) setProtocol="SSLv2" won't work

<Connector port="443" protocol="HTTP/1.1" SSLEnabled="true"
maxThreads="150" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLSv1.2"
keystore="/opt/salesforce/api/tomcat/vk_key/key.jks" keystorePass="password"
/>