Obviously, it makes no sense to CONNECT when talking directly to the final server. It works even if a proxy doesn't understand TLS at all, because CONNECT can be issued inside plain HTTP and requires from the proxy nothing more than copying raw bytes around.īut the connection to the first proxy can be TLS (https) although it means a double encryption of traffic between you and the first proxy. That being said, the intent of CONNECT is to allow end-to-end encrypted TLS session, so the data is unreadable to a proxy (or a whole proxy chain). In fact CONNECT is orthogonal to TLS you can have only one, you can have other, or you can have both of them. Note how this says nothing about TLS (https). Google directly, but if you use another proxy yourself, instead you Hi proxy, please open a raw TCP connection to google any followingīytes I write, you just repeat over that connection without any This lets you explore the website as normal and study the interactions between Burp's browser and the server afterward, which is more convenient in many cases.TL DR a web client uses CONNECT only when it knows it talks to a proxy and the final URI begins with When a browser says: CONNECT HTTP/1.1 Here, you can see the history of all HTTP traffic that has passed through Burp Proxy, even while interception was switched off.Ĭlick on any entry in the history to view the raw HTTP request, along with the corresponding response from the server. In Burp, go to the Proxy > HTTP history tab. Go back to the browser and confirm that you can now interact with the site as normal. Click the Intercept is on button so that it now says The request is held here so that you can study it, and even modify it, before forwarding it to the target server.Ĭlick the Forward button several times to send the intercepted request, and any subsequent ones, until the page loads in Burp's browser.ĭue to the number of requests browsers typically send, you often won't want to intercept every single one of them. You can see this intercepted request on the Proxy > Intercept tab. Burp Proxy has intercepted the HTTP request that was issued by the browser before Using Burp's browser, try to visit and observe that the site doesn't load. Position the windows so that you can see both Burp and Burp's browser. This launches Burp's browser, which is preconfigured to work with Burp right out of the box. This enables you to study how the website behaves when you perform different actions.Ĭlick the Intercept is off button, so it toggles to Intercept is on.Ĭlick Open Browser. Intercepting HTTP traffic with Burp Proxyīurp Proxy lets you intercept HTTP requests and responses sent between Burp's browser and the target server.Managing application logins using the configuration library.Spoofing your IP address using Burp Proxy match and replace.Testing for reflected XSS using Burp Repeater.Viewing requests sent by Burp extensions using Logger.Resending individual requests with Burp Repeater.Intercepting HTTP requests and responses.Viewing requests sent by Burp extensions.Complementing your manual testing with Burp Scanner. ![]()
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