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Collaborator - Cannot verify interactions

Fabien | Last updated: Feb 27, 2019 01:31PM UTC

I set up a Burp Collaborator on a VPS running Ubuntu 18.04 with the following configuration : { "serverDomain" : "burp.example.net", "workerThreads" : 10, "eventCapture": { "localAddress" : "x.x.x.x", "publicAddress" : "x.x.x.x", "http": { "ports" : 80 }, "https": { "ports" : 443 }, "smtp": { "ports" : [25, 587] }, "smtps": { "ports" : 465 }, "ssl": { "certificateFiles" : [ "/etc/letsencrypt/live/burp.example.net-0001/fullchain.pem", "/etc/letsencrypt/live/burp.example.net-0001/privkey.pem", "/etc/letsencrypt/live/burp.example.net-0001/cert.pem" ] } }, "polling" : { "localAddress" : "x.x.x.x", "publicAddress" : "x.x.x.x", "http": { "port" : 9090 }, "https": { "port" : 9443 }, "ssl": { "certificateFiles" : [ "/etc/letsencrypt/live/burp.example.net-0001/fullchain.pem", "/etc/letsencrypt/live/burp.example.net-0001/privkey.pem", "/etc/letsencrypt/live/burp.example.net-0001/cert.pem" ] } }, "metrics": { "path" : "collab", "addressWhitelist" : ["0.0.0.0/1"] }, "dns": { "interfaces" : [{ "name": "ns1", "localAddress" : "x.x.x.x", "publicAddress" : "x.x.x.x" }], "ports" : 53 }, "logLevel" : "DEBUG" } When running the Health Check, all connection tests pass but all Verify interaction with DNS/HTTP/... fail with Error. I tried with both 1.7.35 and latest beta version of Burp with the same result. Unfortunately i did not find any additional log to help me troubleshoot the issue. If anyone had this problem before and solved it, any help would be greatly appreciated.

Burp User | Last updated: Feb 28, 2019 09:07AM UTC

I finally figured it out. Turns out the 'optional' polling location was my issue. Somehow the polling over HTTPS is failing and using the port 9090 unencrypted solved the problem.

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