The Port 6000 Mystery

6 months ago

EventSourcingDB 1.0 was released after extensive testing, but a bug was reported hours later regarding the Management UI not loading on port 6000.
The issue was traced to browsers blocking certain ports (6000-6063) by default for security reasons, a measure to prevent protocol confusion attacks.
Port 6000 is blocked because it's the default for the X Window System (X11), which could be exploited if browsers allowed connections to it.
The team had tested many ports but not those in the browser's 'bad ports' list, highlighting a gap in testing real-world user scenarios.
A solution was implemented to warn users when starting the Management UI on a blocked port and documentation was updated to prevent future issues.
The incident underscored the importance of understanding the ecosystem in which software operates, including browser security policies.
The bug report from a real user was valuable feedback, emphasizing the importance of community input in improving software.
EventSourcingDB reached 10,000 downloads on Docker Hub, marking a significant milestone for the project.

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