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Configuring Java to work with KVMoIP

As of Java version 7 onwards, the Java development team continue to make security "improvements" that inadvertently play havoc with Java embedded devices such as the web GUI's on KVMoIP and network switches.

As such, we have put together this knowledge base article that will guide you through the process of tweaking your Java settings to work with our Dell KVMoIP appliances.

Prerequisites:

1.) The source computer/laptop connecting to our KVMoIP appliance must be Linux or Windows based, MAC is not officially supported
2.) You must have administrator/root/superuser access to the aforementioned computer/laptop above!
3.) You need an up-to-date install of the Java Runtime Environment which at the time of writing this article is Version 8 Update 66

Step 1 - Modify 'java.security' File:

4.) On a Windows device, find and open the file 'java.security' in Program Files (x86) > Java > jreX.X.X_X > lib > security > java.security (X being your Java version so may differ!
5.) On a Linux device, find and open the file 'java.security' in /etc/java-7-openjdk/security/java.security
6.) Now look for a non commented out line that begins 'jdk.tls.disabledAlgorithms' comment it out and underneath it add a new line with:

jdk.tls.disabledAlgorithms=SSLv3, EC, ECDHE, ECDH

7.) Save and exit the file


Step 2 - White List KVM IP:

8.) Please add 'http' white list entries into the 'Security' tab in your Java control panel for the following KVM IP addresses:

37.26.104.1
37.26.104.2
37.26.104.3
37.26.104.4
37.26.104.5
37.26.104.6
37.26.104.7
37.26.104.8
37.26.104.9
37.26.104.10
37.26.104.180
37.26.104.181
37.26.104.182
37.26.104.183
37.26.104.184
37.26.104.185
37.26.104.186
37.26.104.187
37.26.104.188
37.26.104.189
37.26.104.190
37.26.104.191
37.26.104.192

Step 3 - Re-launch the Java Runtime Environment

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