# Firefox

## Enable use of flash player plugin

**WARNING**: You are creating a Firefox browser which can use **deprecated**, **unsafe** plugins like Flash or Java. Please keep in mind to only access safe webpages with it. **You have been warned!**

Links:
* [Superuser.com - How to circumvent to disablement of flash plugin](https://superuser.com/a/1617236/1446767)

1. Download and install an older version of Firefox, e.g. version 51
2. Install flash plugin
3. Create a separate user profile for this installation
4. Symlink `libflashplugin.so` to `<user-profile-dir>/plugins/`
5. Edit `/etc/adobe/mms.cfg` and add the following lines:
   ```
   AllowListUrlPattern=https://example.url
   EOLUninstallDisable=1
   ```
   You may specify `AllowListUrlPattern` multiple times for multiple urls. `AllowListUrlPattern=*` or `AllowListUrlPattern=https://*` won't work
6. Start Firefox with new profile like this: `</firefox-path>/firefox --profile <profile-path> --no-remote`
    * Use `--no-remote` to create a new window in a new session
    * Otherwise an already open Firefox would spawn a new window