AWS Classroom Series – 24/Feb/2020

NACL Ephemeral Ports

  • For internal communications with in aws vpc for certain cases like
    • Load balancing
    • Lambda functions etc AWS uses ephemeral ports for communications, so dont close ephemeral ports (32768-65535) for vpc range

How to trouble shoot Network Packets

  • AWS allows you to look at all the packets by using vpc flow log.

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