Terrascan by Tenable vs. tfRails comparison

Terrascan by Tenable

vs. Tf-Rails

Architecture

The main distinctions between IaC testing tools arise from their ability to perform impact analysis against the runtime environment, considering potential resource drift, and to evaluate impacts beyond the unit level. Focusing solely on unit-level testing may lead to overlooking critical issues or generating false-positive alerts.

Merges runtime and build

Yes

Full posture impact analysis

Yes

OpenSource

Yes

Terrascan by Tenable is an open-source static analysis tool for securing Infrastructure as Code (IaC) configurations. Its architecture consists of a policy engine with predefined and customizable policies, support for multiple IaC frameworks, and easy integration with CI/CD pipelines and DevOps tools. Terrascan scales with your organization's needs, provides CLI and API support, and offers detailed reporting and visualization for vulnerability remediation. Overall, it ensures secure, compliant infrastructure deployments across various development environments.

Terrascan by Tenable

vs. Tf-Rails

Use Case

When selecting a Terraform testing tool, it is essential to ensure that the tool is capable of addressing various use cases to thoroughly assess critical elements of a change, such as Availability, Resilience, Security, and Cost.

User defined policies

No code solution | supporting posture based rules

Code

Rules categories

Cost, Security, Resilience

Security

Terrascan by Tenable is useful for various security and compliance use cases: Detecting misconfigurations: Identify and remediate security vulnerabilities in IaC configurations during development. Ensuring compliance: Validate infrastructure configurations against industry standards, such as CIS benchmarks and NIST guidelines.

Terrascan by Tenable

vs. Tf-Rails

Coverage

When evaluating IaC testing tools, support for multiple languages may seem like a desirable feature; however, it is less important than the tool's overall quality. A high-quality tool should prioritize accurate and comprehensive tests for a specific language, ensuring better issue detection and reducing false positives. In essence, it's better to have an effective testing tool for one language than a mediocre one for multiple languages.

Supported IaC

No code solution | Terraform

Terraform, CloudFormation, Arm

Supported cloud

AWS

AWS, Azure, GCP