I switched to openSUSE-Tumbleweed and it works.
Hello,   I am using Centos 7 and Firefox to try and launch the console of a Dell iDRAC. I am using Java version "1.8.0_131", Java(TM) SE Runtime Environment (build 1.8.0_131-b11), Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode).    When I connect to the iDRAC and click to launch the console it fails to open.  When I click launch to open the console I accept the Security Warning.  It says, Trying to launch iDRAC6 Virtual Console Client from Dell Inc. It asks, Do you want to Continue. The connection to this website is untrusted. I click "continue".   The box with the error stated, "Unsigned application requesting unrestricted access to system. The following resource is signed with a weak signature algorithm MD5withRSA and is treated as unsigned: [URL]".   The Exception is below: JNLPException[category: Security Error : Exception: null : LaunchDesc:  [URL]" spec="1.0+">         iDRAC6 Virtual Console Client     Dell Inc.      [URL]" kind="splash"/>                 ip=1.1.1.1      vmprivilege=true      helpurl= [URL]      title=idrac-GJVDXQ1%2C+PowerEdge+R610%2C+User%3Anyiadmin      user=572660336      passwd=1159126505      kmport=5900      vport=5900      apcp=1      version=2                            [URL]" download="eager" main="true"/>            [URL]" download="eager"/>      [URL]" download="eager"/>            [URL]" download="eager"/>      [URL]" download="eager"/>            [URL]" download="eager"/>      [URL]" download="eager"/>            [URL]" download="eager"/>      [URL]" download="eager"/>            [URL]" download="eager"/>      [URL]" download="eager"/>            [URL]" download="eager"/>      [URL]" download="eager"/>            [URL]" download="eager"/>      [URL]" download="eager"/>            [URL]" download="eager"/>      [URL]" download="eager"/>            [URL]" download="eager"/>      [URL]" download="eager"/>      ]     at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResourcesHelper(Unknown Source)     at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResources(Unknown Source)     at com.sun.javaws.Launcher.prepareResources(Unknown Source)     at com.sun.javaws.Launcher.prepareAllResources(Unknown Source)     at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)     at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)     at com.sun.javaws.Launcher.launch(Unknown Source)     at com.sun.javaws.Main.launchApp(Unknown Source)     at com.sun.javaws.Main.continueInSecureThread(Unknown Source)     at com.sun.javaws.Main.access$000(Unknown Source)     at com.sun.javaws.Main$1.run(Unknown Source)     at java.lang.Thread.run(Thread.java:748)   Is it possible to resolve?   Thank you.
iDRAC JNLPException Security Error