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A security group rule intended to allow HTTP traffic is written as: Protocol: TCP, Port Range: 8080, Source: 0.0.0.0/0. Why might HTTP requests on port 80 fail?

medium📝 Debug Q7 of 15
AWS - Security Groups and Network ACLs
A security group rule intended to allow HTTP traffic is written as: Protocol: TCP, Port Range: 8080, Source: 0.0.0.0/0. Why might HTTP requests on port 80 fail?
ASecurity group rules do not affect HTTP traffic
BPort 8080 is not the standard HTTP port
CProtocol should be UDP for HTTP
DSource IP range is incorrect
Step-by-Step Solution
Solution:

  1. Step 1: Identify standard HTTP port

    HTTP standard port is 80, not 8080.

  2. Step 2: Understand impact of port mismatch

    Allowing port 8080 does not allow traffic on port 80.

  3. Final Answer:

    Port 8080 is not the standard HTTP port -> Option B

  4. Quick Check:

    HTTP uses port 80, not 8080 = D [OK]
Quick Trick: HTTP standard port is 80, not 8080 [OK]
Common Mistakes:
MISTAKES
  • Confusing port numbers
  • Wrong protocol for HTTP

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