If you're having issues connecting to server console because of old java version running on the server via a command like this
/usr/lib/jvm/jre1.8.0_361/bin/javaws 'viewer.jnlp(82.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx)'
and you get security warnings regarding certificates or algorithms, there are several options to try.
Run the
/usr/lib/jvm/jre1.8.0_361/bin/jcontrol
Navigate to Security tab and put the https endpoint in Exception Site List.
Edit the java.security file for your java installation e.g /usr/lib/jvm/jre1.8.0_361/lib/security/java.security and comment the
jdk.jar.disabledAlgorithms= jdk.tls.disabledAlgorithms=
2 lines.
Try conecting again.