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Logon to a website behind an Incapsula firewall

Rui | Last updated: Sep 01, 2018 12:00AM UTC

Hello I am testing a website behind an Incapsula firewall. I can login to the website if I am not accessing it through Burp Proxy. If I try to logon through Burp (i.e. I enter the userid and password in the logon form and submit), the site responds with an HTTP 401 error code and prompts for a host-based logon. I have disabled Burp Collaborator and the Collaborator extension, since these were listed as potential issues on another ticket. But that does not fix the problem. Any idea what can be done to fix this?

PortSwigger Agent | Last updated: Sep 03, 2018 02:00PM UTC