Under , click the Import / export CA certificate button. Select Certificate in DER format and click "Next".
Once you have the file, you must manually add it to Firefox’s certificate manager. Installing Burp's CA certificate in Firefox - PortSwigger burp certificate download firefox
Launch and ensure the Proxy listener is active (default is 127.0.0.1:8080 ). Open Firefox and navigate to http://burpsuite . Under , click the Import / export CA certificate button
Save the file (usually named cacert.der ) to a location you can easily access. Installing Burp's CA certificate in Firefox - PortSwigger
To successfully perform web penetration testing with Firefox , you must download and install the Burp Suite CA certificate. This process allows Firefox to trust the Burp Suite proxy, enabling it to intercept and inspect encrypted HTTPS traffic without showing security warnings.
There are two primary ways to obtain the certificate file from Burp Suite.