# Cis Azure Foundations 7.9

> Cis Azure Foundations 7.9 is an Agent Skill for devops & security published in the CyberStrikeus/CyberStrike repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Ensure 'Authentication type' is set to 'Azure Active Directory' only for Azure VPN Gateway point-to-site

- Skill name: `cis-azure-foundations-7.9`
- Category: [DevOps & Security](https://www.openparable.com/skill/devops-security/1)
- Source: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Cloud_Providers/Microsoft_Azure/CIS_Microsoft_Azure_Foundations_Benchmark_v5.0.0/cis-azure-foundations-7.9/SKILL.md
- Repository: CyberStrikeus/CyberStrike (1,211 GitHub stars when collected)

## SKILL.md

# Ensure 'Authentication type' is set to 'Azure Active Directory' only for Azure VPN Gateway point-to-site configuration

## Description

Enable only 'Azure Active Directory' (Microsoft Entra ID) authentication for Azure VPN Gateway point-to-site connections.

## Rationale

Microsoft Entra ID authentication provides strong security and centralized identity management, and reduces risks associated with static credentials and certificate management.

## Impact

Azure VPN Gateways incur hourly charges, with additional costs for point-to-site connections and data transfer. Pricing varies by SKU and usage. Refer to https://azure.microsoft.com/en-us/pricing/details/vpn-gateway/ for details.

## Audit Procedure

### Using Azure Portal

1. Go to `Virtual network gateways`.
2. Under `VPN gateway`, click `VPN gateways`.
3. Click the name of a VPN gateway.
4. Under `Settings`, click `Point-to-site configuration`.
5. Ensure `Authentication type` is set to `Azure Active Directory` only.
6. Repeat steps 1-5 for each VPN gateway.

### Using Azure Policy

- **Policy ID:** 21a6bc25-125e-4d13-b82d-2e19b7208ab7 - **Name:** 'VPN gateways should use only Azure Active Directory (Azure AD) authentication for point-to-site users'

## Expected Result

All Azure VPN Gateway point-to-site configurations should have `Authentication type` set to `Azure Active Directory` only, with no other authentication methods (Azure certificate, RADIUS) enabled.

## Remediation

### Remediate from Azure Portal

1. Go to `Virtual network gateways`.
2. Under `VPN gateway`, click `VPN gateways`.
3. Click the name of a VPN gateway.
4. Under `Settings`, click `Point-to-site configuration`.
5. Ensure `Authentication type` click to expand the drop-down menu.
6. Check the box next to `Azure Active Directory`, and uncheck the boxes next to `Azure certificate` and `RADIUS authentication`.
7. Provide a `Tenant`, `Audience`, and `Issuer` for the `Azure Active Directory` configuration.
8. Click `Save`.
9. Repeat steps 1-8 for each VPN gateway requiring remediation.

## Default Value

'Authentication type' is selected during creation of point-to-site configuration.

## References

1. https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-about-vpngateways
2. https://learn.microsoft.com/en-us/azure/vpn-gateway/point-to-site-entra-gateway
3. https://learn.microsoft.com/en-us/azure/vpn-gateway/openvpn-azure-ad-tenant

## CIS Controls

| Controls Version | Control                                            | IG 1 | IG 2 | IG 3 |
| ---------------- | -------------------------------------------------- | ---- | ---- | ---- |
| v8               | 5.6 Centralize Account Management                  |      | x    | x    |
| v7               | 16.2 Configure Centralized Point of Authentication |      | x    | x    |

## Profile

Level 2 | Manual

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Source: https://www.openparable.com/skill/devops-security/cis-azure-foundations-7-9 (OpenParable). Cite the canonical URL above.