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the burp Collaborator server used by the burp Collaborator client is not reachable

wd99999 | Last updated: Apr 21, 2022 11:19PM UTC

An HTTPS connection to the capture server at ck0vpewy7kl5t59tkxbxxe56axgautebie7.oastify.com could not be opened. Communication using other protocols did work; possibly a firewall is preventing this connection. No connections to the polling server at polling.oastify.com could be opened. The collaborator will not work in this configuration. My firewall is closed. How can I solve this? Thank you

Michelle, PortSwigger Agent | Last updated: Apr 22, 2022 08:08AM UTC

Thanks for your message. Are you able to browse to http://oastify.com from a browser that is not proxied via Burp? When you say your firewall is closed, do you mean you have no firewall running, or do you have a firewall running that is blocking some access?

Beniamino | Last updated: Jun 20, 2022 08:47AM UTC

hi, i have the same problem. No firewall in place An HTTP connection to the capture server at tgd0ina7r6b0eujf4m63ju08vz1cfvzd3gs.oastify.com could not be opened. An HTTPS connection to the capture server at tgd0ina7r6b0eujf4m63ju08vz1cfvzd3gs.oastify.com could not be opened. Communication using other protocols did work; possibly a firewall is preventing this connection. No connections to the polling server at polling.oastify.com could be opened. The collaborator will not work in this configuration.

Beniamino | Last updated: Jun 20, 2022 08:47AM UTC

burp version v2022.5.1

Ben, PortSwigger Agent | Last updated: Jun 20, 2022 12:25PM UTC

Hi Beniamino, As my colleague has mentioned further up this forum thread, are you able to successfully browse to http://oastify.com from a browser, that is not proxied via Burp, on the machine that you are using?

Beniamino | Last updated: Jun 20, 2022 12:54PM UTC

Hi, yes i can browse it. Thx

Beniamino | Last updated: Jun 20, 2022 01:01PM UTC