We all know that Firefox does not come with flash player by default unlike Google Chrome. To get it working you have to download adobe flash player from the official site and install it. Earlier adobe released the .deb version of the adobe flash player and it now discontinued it. At present we can either get the .rpm yum or the archive format .tar.gz of flash player. This tutorial is a guide to install adobe flash player from the archive tar.gz file for Mozilla Firefox.
Install Adobe flash from Archive tar.gz
Download the flash player (tar.gz format) from Adobe page.
Extract the file using the command tar -zxf <filename>
Make a folder called plugins in the mozilla directory (~/.mozilla) using the command mkdir ~/.mozilla/plugins
Move libflashplayer.so file to the plugins directory using the command mv libflashplayer.so ~/.mozilla/plugins
Restart firefox for the change to take effect.