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I'm trying to use a KVM Console via an SSH tunnel and I'm getting a Connection Refused Java Error. Here is what I'm doing:

On my Macbook I am establishing an SSH tunnel to my remote server via a jumphost with the following command:

ssh -L 1234:TARGET_SERVER:443 jumphost.foo.com

Next I connect to the remote server's GUI via: https://127.0.0.1:1234

Everything works great. I log into the server, click the Java KVM Console button and my browser downloads the viewer.jnlp applet. Inside the jnlp file all the HTTPS references list https://127.0.0.1:443 and when running this jnlp file Java returns an error saying,

Unable To Launch Application

So I go into the file using VI and I change all the port 443 settings to port 1234. Now everything references https://127.0.0.1:1234. I then run the JNLP file again (using javaws) and I'm getting somewhere. I first get the message about this being an Untrusted connection, should I continue? I select Continue. Next it downloads the KVM application and the next message is: Do you want to run this application? So I select Run.

This is when Java fails and effectively says Connection Refused in the Java Console Logs. What I assume is the problem is likely related to the SSH tunnelling, but I cannot figure out what I need to do in order to correct the problem. I need to run a Java JNLP through a Jumphost using a tunnel and knows what the solution; also access a remote server which is offline and only accessible through the IPMI connection.

Java Console Log:

--Java Web Start 11.191.2.12 x86_64

Using JRE version 1.8.0_191-b12 Java HotSpot(TM) 64-Bit Server VM

User home directory = /my/homedir

----------------------------------------------------

c:   clear console window

f:   finalize objects on finalization queue

g:   garbage collect

h:   display this help message

m:   print memory usage

o:   trigger logging

p:   reload proxy configuration

q:   hide console

r:   reload policy configuration

s:   dump system and deployment properties

t:   dump thread list

v:   dump thread stack

0-5: set trace level to <n>

----------------------------------------------------

Missing Application-Name manifest attribute for: https://127.0.0.1:1234/software/avctNuova.jar.pack.gz

MAC OS X

KVM/VM Client Version: 5.04.02 (Build 192)

replace numpad

replace numpad

** Max Size: W = 1920 H = 976

** Window Pref Size: W = 1024 H = 812

** Max Size: W = 1920 H = 976

** Window Pref Size: W = 1024 H = 812

JNLPClassLoader: Finding library libVMAPI_DLL.dylib

JNLPClassLoader: Finding library libjawt.dylib

JNLPClassLoader: Finding library libavctKVMIO.dylib

Try again with the reduced mode protocol list

Already tried the reduced mode protocol list, quitting

java.net.ConnectException: Connection refused (Connection refused)

    at java.net.PlainSocketImpl.socketConnect(Native Method)

    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)

    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)

    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)

    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)

    at java.net.Socket.connect(Socket.java:589)

    at java.net.Socket.connect(Socket.java:538)

    at java.net.Socket.<init>(Socket.java:434)

    at java.net.Socket.<init>(Socket.java:211)

    at com.avocent.protocol.apcp.ProtocolAPCP.createBasicSocket(Unknown Source)

    at com.avocent.protocol.apcp.ProtocolAPCP.getAvspSocket(Unknown Source)

    at com.avocent.protocol.apcp.ProtocolAPCP.getAvspPrimarySocket(Unknown Source)

    at com.avocent.protocol.avsp.AvspKvmSession.connectToPort(Unknown Source)

    at com.avocent.protocol.avsp.AvspKvmSession.connectToPort(Unknown Source)

    at com.avocent.api.viewer.RPAPIClientViewer.sendConnectRequestToServer(Unknown Source)

    at com.avocent.api.viewer.RPAPIClientViewer.openViewerClient(Unknown Source)

    at com.avocent.app.kvm.DefaultViewerMainController.startSession(Unknown Source)

    at com.avocent.app.kvm.DefaultViewerMainController.startApp(Unknown Source)

    at com.avocent.nuova.kvm.CiscoViewerMainController.startApp(Unknown Source)

    at com.avocent.nuova.kvm.Main.runApp(Unknown Source)

    at com.avocent.nuova.kvm.Main.main(Unknown Source)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    at java.lang.reflect.Method.invoke(Method.java:498)

    at com.sun.javaws.Launcher.executeApplication(Unknown Source)

    at com.sun.javaws.Launcher.executeMainClass(Unknown Source)

    at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)

    at com.sun.javaws.Launcher.run(Unknown Source)

    at java.lang.Thread.run(Thread.java:748)

CoreSessionListener : connection failed

in CoreSessionListner : fireOnSessionStateChanged 

 KVM session state SESSION_FAILED