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Intercept Local host sites for testing Collaborator Client

Murali | Last updated: May 19, 2021 02:45PM UTC

Hello all, I am trying to use my intranet site to test External service interaction (HTTP) using collaborator client. This is what the scenario looks like : 1) Application is hosted in an intranet server. 2) Burp Professional is installed on my machine. 3) I open Burp, start with a temporary project, intercepts the request coming through IE. 4) Sends the request to the repeater, and tests the request by clicking the 'Send' button - I get a valid response. 5) Opens Burp Collaborator tool, Generates a payload (1), replaces the payload with what's there in the hostname, and clicks Send. 6) Opens Collaborator Client, and Clicks poll now. Nothing happens - I can't see any entries coming in / recorded. I tried a similar exercise with an external site "https://www.proxysite.com/" and was able to see DNS and HTTP entries. Are there any limitations while working with local intranet sites? Or am I missing some steps here. Very badly need help. Thank you.

Hannah, PortSwigger Agent | Last updated: May 19, 2021 04:03PM UTC