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Web Scan with Proxy deployed in Network

Sofian | Last updated: Jun 10, 2021 09:59PM UTC

Hi Team, We are using Burp Suite Pro v2021.3.3. We are trying to scan one of our web instances which is public facing endpoint in our network and any traffic has to go thru our proxy in our network. I have my Burp suite proxy setup listening to port 4258 and the browser (fireFox) is also setup to use manual proxy listening at port 4258. However, when I initiate the scan, Burp is not able to reach the targeted URL of the web instance. With proxy enforcement in our environment, how can Burp Suite be setup to scan that web instance? Please advise. Thank you.

Ben, PortSwigger Agent | Last updated: Jun 11, 2021 07:33AM UTC

Hi Sofian, You can configure Burp to use an 'upstream' proxy by configuring details of your proxy in the User options -> Connections -> Upstream Proxy Servers section of Burp. Once configured, this means that outgoing requests will be sent to this proxy server rather than being issued directly to the destination web server. These settings can be tailored so that only requests to certain hosts are directed to the upstream proxy so you can control how this works in a granular fashion. There is more information on how our Upstream Proxy settings work on the following page: https://portswigger.net/burp/documentation/desktop/options/connections#upstream-proxy-servers

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