Instalando certificados de Burp en Firefox

Con Burp Intercept On, ir a 

http://burpsuite

Descarga CA Certificate

In Firefox, open the burger menu and click "Preferences" or "Options". 

 

From the navigation bar on the left of the screen, open the "Privacy and Security" settings.

Scroll down to the "Certificates" section and click the "View certificates" button. 

 

Importar: cacert.der

 

When prompted to edit the trust settings, make sure the checkbox "This certificate can identify websites" is selected and click "OK".