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What method is typically used to authenticate a microservice before it communicates with another service?

easy🧠 Conceptual Q2 of 15
Cybersecurity - Security Architecture and Design
What method is typically used to authenticate a microservice before it communicates with another service?
AUsing plain HTTP without credentials
BMutual TLS (mTLS) authentication
CDisabling authentication for faster communication
DRelying on IP address filtering only
Step-by-Step Solution
Solution:

  1. Step 1: Identify authentication methods

    Mutual TLS (mTLS) is a common method for service-to-service authentication.

  2. Step 2: Evaluate other options

    Options B, C, and D are insecure or insufficient for authentication.

  3. Final Answer:

    Mutual TLS (mTLS) authentication -> Option B

  4. Quick Check:

    mTLS provides strong mutual authentication [OK]
Quick Trick: mTLS authenticates both client and server [OK]
Common Mistakes:
MISTAKES
  • Assuming IP filtering alone is secure
  • Thinking authentication can be skipped
  • Using unsecured HTTP for authentication

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