---
name: microsoftdocs/azure-external-attack-surface-management
source: https://app.decimal.ai/s/microsoftdocs-azure-external-attack-surface-management@2/SKILL.md
source_sha256: d5a5b9439092
---

# Azure External Attack Surface Management Skill

This skill provides expert guidance for Azure External Attack Surface Management. Covers configuration. It combines local quick-reference content with remote documentation fetching capabilities.

## How to Use This Skill

> **IMPORTANT for Agent**: Use the **Category Index** below to locate relevant sections. For categories with line ranges (e.g., `L35-L120`), use `read_file` with the specified lines. For categories with file links (e.g., `[security.md](security.md)`), use `read_file` on the linked reference file

> **IMPORTANT for Agent**: If `metadata.generated_at` is more than 3 months old, suggest the user pull the latest version from the repository. If `mcp_microsoftdocs` tools are not available, suggest the user install it: [Installation Guide](https://github.com/MicrosoftDocs/mcp/blob/main/README.md)

This skill requires **network access** to fetch documentation content:
- **Preferred**: Use `mcp_microsoftdocs:microsoft_docs_fetch` with query string `from=learn-agent-skill`. Returns Markdown.
- **Fallback**: Use `fetch_webpage` with query string `from=learn-agent-skill&accept=text/markdown`. Returns Markdown.

## Category Index

| Category | Lines | Description |
|----------|-------|-------------|
| Configuration | L29-L42 | Configuring Defender EASM asset filters (domains, hosts, IPs, IP blocks, ASNs, pages, SSL certs, contacts), inventory filter parameters, data connections, and policy automation. |

### Configuration
| Topic | URL |
|-------|-----|
| Filter ASN assets in Defender EASM inventory | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/asn-asset-filters |
| Configure contact asset filters in Defender EASM | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/contact-asset-filters |
| Configure Defender EASM data connections to Log Analytics and ADX | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/data-connections |
| Apply domain-specific filters in Defender EASM | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/domain-asset-filters |
| Use host asset filters in Defender EASM | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/host-asset-filters |
| Use Defender EASM inventory filter parameters | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/inventory-filters |
| Filter IP address assets in Defender EASM | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/ip-address-asset-filters |
| Filter IP block assets in Defender EASM | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/ip-block-asset-filters |
| Configure page asset filters in Defender EASM | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/page-asset-filters |
| Configure Defender EASM policy engine automation | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/policy-engine |
| Use SSL certificate asset filters in Defender EASM | https://learn.microsoft.com/en-us/azure/external-attack-surface-management/ssl-certificate-asset-filters |