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connection failed issue when scanning

Bappe | Last updated: Dec 17, 2019 04:29AM UTC

Why burp shows connection failed in event log window while performing new automated scan though the application is reachable with browser or ping utility ?

Ben, PortSwigger Agent | Last updated: Dec 17, 2019 08:44AM UTC

Hi, Does the connection failed event happen immediately or at some point after the scan has started? Are you using a LAN proxy to access the internet?

Burp User | Last updated: Dec 17, 2019 09:33AM UTC

Hi Ben wright, When i start automated scan , it will run the scan fine but in the event box shows that the connection is failed . i am not using any LAN proxy. though the application server reachable from ping utility and application is browse from any browser.

Ben, PortSwigger Agent | Last updated: Dec 17, 2019 10:13AM UTC

Hi, Are there any other error messages displayed in the Event log (make sure to switch on all the filters; Critical, Error, Info and Debug) when this happens?

Burp User | Last updated: Dec 17, 2019 11:35AM UTC

hi wright dec, yes some times it shows application authentication error message.

Ben, PortSwigger Agent | Last updated: Dec 17, 2019 11:36AM UTC

Hi Bappe, Are you able to send us an email with a screenshot of the errors that you are receiving (if you can send this to support@portswigger.net) we will then have a better idea of what is happening during your scan?

Burp User | Last updated: Dec 17, 2019 11:55AM UTC

Hi ben, sorry i can't send email right now. because the issue happened with my client. i will send mail later.

Ben, PortSwigger Agent | Last updated: Dec 17, 2019 12:07PM UTC

Hi Bappe, That is fine. Please send us the details whenever you are ready to. If Burp cannot authenticate against the site then it is likely to have connection issues but we can confirm what is happening when we receive the details in your email.

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