hostnamectl; # tested on
   Static hostname: giada
         Icon name: computer-desktop
           Chassis: desktop
  Operating System: Debian GNU/Linux 10 (buster)
            Kernel: Linux 4.19.0-17-amd64
      Architecture: x86-64

su - root
apt update
# will install Java Web Start and openjdk-11-jre
apt install icedtea-netx java-common

# make backup
cp -v /etc/java-11-openjdk/security/ /etc/java-11-openjdk/security/

# open up OpenJDK Java Security Config
vim /etc/java-11-openjdk/security/

# remove MD5 from this line
jdk.jar.disabledAlgorithms=MD2, RSA keySize < 1024, DSA keySize < 1024, include jdk.disabled.namedCurves
# (yes can also remove the trailing line-break-indicator \)

or the admin-user will run into

now restart the web browser and reconnect with web interface of lantronics

then greetings

yes we trust

now icedtea kvm web console should start up… and it is possible to interact with the dedicated server