Cisco ASA ASDM in Linux — oracle JRE only

Before anyone else is starring at

java.lang.NoSuchMethodError:
sun.security.x509.NetscapeCertTypeExtension.get

or

java.lang.NumberFormatException: For input string: "72-internal" 

and wonders why the ASDM won’t work with Debian GNU/Linux. For some reason it’s just not compatible with openjdk. Install oracle-jdk as explained on https://wiki.debian.org/JavaPackage and make pretty sure that your package stays recent.

After installing it, I still had to change the JVM in itweb-settings to

/usr/lib/jvm/jdk-8-oracle-x64/jre

Shiny enterprise world.