The initial configuration performed in Burp Suite creates a listening port on TCP 8080. This port is used by Burp Suite to intercept all web traffic and also to receive the incoming traffic returned in response. By configuring the IceWeasel web browser proxy configuration to point to this port, we indicate that all traffic generated in the browser should be routed through Burp Suite Proxy. Thanks to the capabilities provided by Burp, we can now modify the en-route traffic at will.