Firefox Java Plugin

If you need to access a legacy site (e.g., an old router admin panel, a corporate intranet tool, or an educational simulation) that requires the Java plugin, you cannot use modern Firefox. Here are your three workarounds:

You can download or older portable versions that still support NPAPI. However, do not browse the general web with this browser —it has unpatched security holes. Use it only for the specific legacy intranet site. firefox java plugin

This is the final version of Firefox that officially supported the Java plugin. Which versions of Firefox actually support Java Plugins? If you need to access a legacy site (e