# Burp Proxy Introduction ### Introduction into BURP Burp is a Webapplication Proxy. To practice let's start the [DVWA ](/cas-cybersecurity/docker-basics.md#dawn-vulnerable-webapp-installation)Docker Container. > sudo docker start dvwa > > docker ps Our docker container listens on port 80. Instead of use the docker interface [http://172.17.0.1:80.\ ](https://cas-cyber.gitbook.io/cas-cybersecurity/web-application-security/http:/172.17.0.1:80.\ );
The reason for that is that we would not see any traffic in burp otherwise. Let's start burp and use burp defaults. ![](/files/-MhjOZl7YvyV8r79sbew) Burp listens on 127.0.0.1:8080. If we want burp to intercept webtraffic we need to configure this address as webproxy in our browser. ![Burp Interface](/files/-MhjSFiMaY7z1fBvJSgV) We have different Modules here (Proxy, Intruder, Repeater,Sequenzer,Decoder,Comparer...) Let's go hands on and practice :) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://cas-cyber.gitbook.io/cas-cybersecurity/web-application-security/burp-proxy-introduction.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.