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Remediation

Attach a Lambda Function to a VPC​

Configure the Lambda function to run within a Virtual Private Cloud (VPC) by associating it with appropriate subnets and security groups. Ensure the selected subnets have network connectivity to the required resources.

From Command Line​

Use the update-function-configuration command with the --vpc-config parameter:

aws lambda update-function-configuration \
    --function-name {{function-name}} \
    --vpc-config SubnetIds=subnet-id1,subnet-id2,SecurityGroupIds=sg-id

Notes​

  • Select private subnets that provide access to required resources such as Amazon RDS, ElastiCache, or internal services.
  • Ensure the associated security group allows the necessary inbound and outbound traffic.
  • If the function requires outbound internet access, configure a NAT Gateway in the VPC.