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How to check if there is traffic to a particular Source IP


  1. Navigate to the network interface in EC2 as below.

a. Search for the IP address, click on flow logs and destination name.

b. Take note of the Network interface ID (eni-xxxxxxx) which you would need in Step 2.

2. On the CloudWatch page, look for the log stream related to the Network interface ID.

3. Look for the source IP that you want to check

a. If you see “REJECT OK”, it means that the security group does not allow the IP. Update the security group to include the IP.

b. If you don’t see any IP, it means that there is no traffic from the particular source (Check with your network team if the source is from onpremise)



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Arun Kumar

Cloud Architect | AWS, GCP, Azure, Python, Kubernetes, Terraform, Ansible