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SOCKS proxy runs very slow

diego | Last updated: Aug 05, 2016 03:07PM UTC

I configured my burp suite by default port (127.0.0.1:8080). I'm running Firefox 48, Java 8_101 (Both Latest versions) CA certificate is already installed. The problem is: When I use SOCKS proxy in User Options->Connections->SOCKS proxy (even with checked/unchecked Do DNS lookups over SOCKS proxy) I make a test with Firefox Developer Tools and take the time how much it takes to load a website IE: https://ipinfo.io(can be any other medium website) and it takes over 30-40, sometimes 50 seconds to load completely. But when I put this SOCKS proxy directly in my Firefox network configuration (obviously not using Burp Suite) and Test load time, this website is loaded in just 8 seconds, 15 maximum. Am I doing something wrong in Burp Suite configuration that makes this a problem?

Liam, PortSwigger Agent | Last updated: Aug 08, 2016 10:24AM UTC

Burp Suite uses core java API's to handle SOCKS. You could try using a different version of Java? Is it just one application that you are having this issue with?

Burp User | Last updated: Mar 20, 2018 05:33PM UTC