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Reading VPC Flow Logs for a NACL issue

Clients cannot load a site on a public web server. VPC Flow Logs show the lines below. What is the cause?

2 1111 eni-0a1 198.51.100.7 10.0.1.20 51544 443 6 10 840 ... ACCEPT OK
2 1111 eni-0a1 10.0.1.20 198.51.100.7 443 51544 6 10 4200 ... REJECT OK

A.The security group is missing an outbound rule for port 443B.The route table lacks the local VPC routeC.The OS firewall on the instance is dropping packetsD.The network ACL lacks an outbound rule for ephemeral ports 1024-65535

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Reading VPC Flow Logs for a NACL issue

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