Cisco Asdm-Idm Launcher Upgrade Your Firewall

You are here: Home Blog System Engineering Networking Cisco ASDM Launcher fails with latest Java 8 Cisco ASDM Launcher fails with latest Java 8 You have a Cisco ASDM launcher and your launcher does not start anymore with JRE 7, JRE 8, JRE 9, JRE 10, JRE 11, JRE 12.

You get the error: Error: Unable to launch device manager from Probably this issue came from an Java Update.

Table of Contents Identify the error What is the root cause How to fix it Modify the existing JRE for your Cisco ASDM Prepare a dedicated JRE only for Cisco ASDM (hard way, but more secure) 1.

What is the root cause Oracle has disabled any well known unsafe and unsecure cipher and algorithm.

You can re-enable this again, but sadly you have to enable it fully for the complete installation of Java.

This means you have to enable unsecure protocols for any java application.

Typically it is no issue, but could be in some security relevant environments.

Cisco Asdm-Idm Launcher Upgrade Your Firewall

How to fix it Best way would be to upgrade your Firewall to later Software version.

This is the most secure way for all other application, since you limit the bad unsecure protocols to Cisco ASDM only.

To achieve this, copy your existing JRE to a special location, and create a script which sets JAVAHOME and PATH to run java from this new folder.

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