Burp Suite Professional Error Permission denied: connect

放包报错：

Burp Collaborator Health Check

出现如下报错

解决办法：burp的jar包要链接一个443的外网...我拿火绒之前把他阻断了，放行就可以了。

全绿真舒服

一开始网上那个报错说IPv4的原因或者java版本的原因，还有证书的原因，都试过，一项项排除，在虚拟机里面也试过，都ok没问题，真机死活不行，放包就断，就报那个错，最后把火绒退出了，但阻断的规则还生效，没注销，干脆把burp 的jar包联网的那个放行，就可以了。真的吐了....

一般报错看前辈填过的坑：https://www.cnblogs.com/junsec/p/10486081.html

或者去burp官网社区去查：https://forum.portswigger.net/thread/polling-server-connection-fails-on-private-collaborator-instance-d27938bf

没查到就自己在burp官网提问或者发email，我发的报错模板如下，参考。看官网回复的挺积极的，然后先拿虚机的burp凑合用，实在不行适当放过，时间宝贵。报错提交list：

Initiating health check
Server address resolution Success
Server HTTP connection Warning
Server HTTPS connection (trust enforced) Warning
Server HTTPS connection (trust not enforced) Warning
Server SMTP connection on port 25 Success
Server SMTP connection on port 587 Warning
Server SMTPS connection (trust enforced) Warning
Server SMTPS connection (trust not enforced) Warning
Polling server address resolution Success
Polling server connection Error

An HTTP connection to the capture server at wttmiopvb62c8ztl5huni7jtjkpx3gnyr1g.burpcollaborator.net could not be opened.
An HTTPS connection to the capture server at wttmiopvb62c8ztl5huni7jtjkpx3gnyr1g.burpcollaborator.net could not be opened.
An SMTP connection to the capture server at wttmiopvb62c8ztl5huni7jtjkpx3gnyr1g.burpcollaborator.net port 587 could not be opened.
An SMTPS connection to the capture server at wttmiopvb62c8ztl5huni7jtjkpx3gnyr1g.burpcollaborator.net 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.burpcollaborator.net could be opened. The collaborator will not work in this configuration.

I tried many methods, but still can’t solve it. Has anyone encountered this problem? Can you tell me how to solve it? I would appreciate it.