> For the complete documentation index, see [llms.txt](https://kunalwalavalkar.gitbook.io/write-ups/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kunalwalavalkar.gitbook.io/write-ups/root-me/web-server/http-user-agent.md). # HTTP - User-agent

Let's intercept the request using Burpsuite so that we can modify it.

We can now send the request to `Repeater`.

## User-Agent The **User-Agent** request header is a characteristic string that lets servers and network peers identify the application, browser used to make the request. We have to modify it to `admin`. ## HTTP Request ``` GET /web-serveur/ch2/ HTTP/1.1 Host: challenge01.root-me.org User-Agent: admin Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate, br DNT: 1 Connection: close Cookie: _ga_SRYSKX09J7=GS1.1.1697381490.9.1.1697381491.0.0.0; _ga=GA1.1.1863804672.1697290591 Upgrade-Insecure-Requests: 1 Sec-GPC: 1 ``` Finally, we have to send the request to the server.

## Flag ``` rr$Li9%L34qd1AAe27 ```