browser extensions
Firefox (macOS)
After downloading the 2 files, we proceed to install the extension in Firefox by double clicking on the first file. To configure the PKCS#11, we must access the menu option Firefox -> Preferences -> Privacy & Security -> Security Devices
![](https://www.viafirma.com/wp-content/uploads/2021/02/fortress-macos-firefox-1-1024x635.png)
Next, on the Device Management screen, click Load. A new window will open. As the module name, we indicate: Fortress PKCS#11. Press the Browse… button and select the libfortress_pkcs11.dylib file that we have downloaded previously.
![](https://www.viafirma.com/wp-content/uploads/2021/02/fortress-macos-firefox-2-1024x554.png)
Finally, if we select Viafirma Fortress in the side panel, we can see on the right the information related to the component we have just added:
![](https://www.viafirma.com/wp-content/uploads/2021/02/fortress-macos-firefox-3-1024x552.png)