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How to turn off Java version check

Posted

I have a small Linux based pc running Firefox in kiosk mode. The pc is not connected to the Internet and only has acess to a dedicated server under my control, serving a few webpages and a java applet. Suddenly the system started complaining java my java version is outdated messing up the kiosk display.

- how did firefox figure out the java version is outdated if neither the frond end pc nor the back end server have access to the Internet - is there a way to turn off java security checking in one of the firefox config files? The kiosk pc boots from the network, the firefox profile is automatically generated, so I need a way to change this in the config files, not through the GUI as I won't be there every time the kiosk boots.

I'm running Firefox 13.0.1, I know this is old but security isn't an issue as I'm only accessing my own server and updating the firefox version on the PXE image is a pain.

Chosen solution

Turns out the 9Oracle) Java installation has a built-in expiration date. So it was Java blocking itself, not firefox blocking Java.

To disable the Java version check, start the Java control panel ('jcontrol'), in the 'Security' tab turn the security level to 'low'. This will disable all version checks and allow Java to run.

Needless to say this should only be applied when running in a completely controlled environment where you control the client and server (as is the case in my setup).

More information available at: http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/client-security.html

Read this answer in context 9

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.2 r202
  • The Adobe Reader plugin is used to enable viewing of PDF and FDF files from within the browser.
  • Java plug-in for NPAPI-based browsers.
  • This plug-in detects the presence of iTunes when opening iTunes Store URLs in a web page with Firefox.
  • This plugin provides integration with Gnome Shell for live extension enabling and disabling. It can be used only by extensions.gnome.org
  • DivX Web Player version 1.4.0.233
  • The Totem 3.4.3 plugin handles video and audio streams.

Application

  • User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:21.0) Gecko/20100101 Firefox/21.0

More Information

Application Basics
Name
Firefox
Version
13.0.1
User Agent
Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20100101 Firefox/13.0.1
Profile Directory
Open Directory
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Crash Reports
about:crashes
Memory Use
about:memory
Extensions
Name
Version
Enabled
ID
Important Modified Preferences
Name
Value
browser.cache.disk.capacity
1048576
browser.cache.disk.smart_size.first_run
false
browser.places.smartBookmarksVersion
3
browser.startup.homepage_override.buildID
20120614114901
browser.startup.homepage_override.mstone
13.0.1
extensions.lastAppVersion
13.0.1
network.cookie.prefsMigrated
true
places.history.expiration.transient_current_max_pages
53109
privacy.sanitize.migrateFx3Prefs
true
Graphics
Adapter Description
VMware, Inc. -- Gallium 0.4 on llvmpipe (LLVM 0x209)
Vendor ID
VMware, Inc.
Device ID
Gallium 0.4 on llvmpipe (LLVM 0x209)
Driver Version
2.1 Mesa 8.0.5
WebGL Renderer
VMware, Inc. -- Gallium 0.4 on llvmpipe (LLVM 0x209) -- 2.1 Mesa 8.0.5
GPU Accelerated Windows
0
AzureBackend
skia
JavaScript
Incremental GC
1
Library Versions
Expected minimum version
Version in use
NSPR
4.9
4.9
NSS
3.13.4.0 Basic ECC
3.13.4.0 Basic ECC
NSS Util
3.13.4.0
3.13.4.0
NSS SSL
3.13.4.0 Basic ECC
3.13.4.0 Basic ECC
NSS S/MIME
3.13.4.0 Basic ECC
3.13.4.0 Basic ECC

philipp
  • Top 10 Contributor
  • Moderator
2042 solutions 8887 answers

Helpful Reply

hello, please see http://kb.mozillazine.org/Extensions.blocklist.enabled (the blocklist now also holds the information for crashy drivers and old plugins)

Chosen Solution

Turns out the 9Oracle) Java installation has a built-in expiration date. So it was Java blocking itself, not firefox blocking Java.

To disable the Java version check, start the Java control panel ('jcontrol'), in the 'Security' tab turn the security level to 'low'. This will disable all version checks and allow Java to run.

Needless to say this should only be applied when running in a completely controlled environment where you control the client and server (as is the case in my setup).

More information available at: http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/client-security.html

Modified by systeemgod