Backend Mystery · Card #48
How do you secure inter-service communication in a microservices architecture?
Starting from the basis of understanding that your inter-service communication is meant to only happen inside private networks (ideally, no public traffic should reach these services), here are some recommendations:
- Use encrypted channels, such as TLS to prevent common attacks such as man-in-the-middle.
- Use an API gateway to manage and authenticate traffic that reaches this private network.
- Enforce authentication and authorization for inter-service messages, making sure that only valid microservices can reach each other, and when they do, they only have access to what it makes sense for them to have.
security microservices