Stop using localhost:3000 or localhost:8080

Stop using localhost:3000 or localhost:8080

Most development environments operate on some variation of http://localhost:8080 with no network restrictions, while production environments implement firewalls, TLS, and segmentation. This discrepancy creates a significant security gap.

To address this, I developed a Docker development environment that enforces production security constraints from the start, including network segmentation, egress filtering, and HTTPS.

The advantage of this approach is that when issues arise, developers gain insights into why production has these security constraints, rather than simply understanding that they exist.

For more details, visit the blog: https://blog.mandraketech.in/java-secure-devcontainer