EFS

Teleskope's EFS connector scans Amazon Elastic File System (EFS) for sensitive data. Because EFS filesystems are mounted over NFS within a VPC, scanning requires a Teleskope Outpost — a lightweight agent deployed inside the same VPC as your EFS mount target. The Outpost handles all file I/O locally and reports findings back to the Teleskope hub over HTTPS.

Requirements

Requirement	Details
Teleskope Role	An IAM role in your AWS account with the EFS control-plane permissions below, trusted by the Teleskope hub
Teleskope Outpost	A Teleskope Outpost deployed in the same VPC as your EFS mount target — required for filesystem access
Network access	The Outpost node must be able to reach the EFS mount target on port 2049 (NFS)
Teleskope account role	Admin role in the Teleskope platform

---

1

Grant Teleskope Read Access to EFS

Attach the following least-privilege policy to the Teleskope IAM role in your account. This allows the Teleskope hub to discover EFS filesystems via the AWS control plane — no VPC access is required for this step.

Terraform

resource "aws_iam_policy" "teleskope_efs_policy" {
  name        = "TeleskopeEFSPolicy"
  description = "Grants Teleskope read access to discover EFS filesystems"

  policy = jsonencode({
    Version = "2012-10-17"
    Statement = [
      {
        Effect = "Allow"
        Action = [
          "elasticfilesystem:DescribeFileSystems",
          "elasticfilesystem:DescribeMountTargets",
          "elasticfilesystem:DescribeMountTargetSecurityGroups",
          "elasticfilesystem:DescribeTags",
          "elasticfilesystem:ListTagsForResource"
        ]
        Resource = "*"
      }
    ]
  })
}

resource "aws_iam_role_policy_attachment" "teleskope_efs" {
  role       = "TeleskopeRole"
  policy_arn = aws_iam_policy.teleskope_efs_policy.arn
}

2

Deploy a Teleskope Outpost in your VPC

EFS filesystems are accessed over NFS and require a node in the same VPC as the mount target. Teleskope uses an Outpost — a self-managed agent deployed in your environment — to handle all file access locally.

• Follow the Outpost setup guide to deploy the Outpost in the same VPC and availability zone as your EFS mount target

• Ensure the Outpost node's security group allows outbound access on port 2049 to the EFS mount target security group

• The EFS filesystem is mounted at /mnt/efs on the Outpost via the EFS CSI driver — the Outpost crawler walks the directory tree over the local mount

• The Outpost communicates results back to the Teleskope hub via HTTPS — ensure the Outpost has outbound internet access or a VPC endpoint to the Teleskope API

Currently, each Outpost supports one EFS filesystem. If you have multiple filesystems, deploy one Outpost per filesystem.

3

Enroll the EFS Connector in Teleskope

Once the IAM role and Outpost are in place, enroll the connector from the Teleskope settings page.

• Navigate to Settings → Connectors → AWS

• Click Enroll+

• Enter your AWS Account ID and the IAM role ARN for the Teleskope role you configured

• Navigate to EFS and enroll the desired accounts

• Teleskope will call DescribeFileSystems to discover filesystems in your account and display them in the connector settings

• Your Outpost will begin crawling the assigned filesystem according to the set crawling schedule