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nexus/wiki/concepts/Security-Group-Policy.md
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---
title: "Security Group Policy"
type: concept
tags: [AWS, Security, Firewall, Policy]
sources: []
last_updated: 2026-04-19
---
## Summary
Security Group Policy 是 Firewall Manager 中用于管理跨账户安全组规则的策略类型。
## Definition
在 Firewall Manager 环境中Security Group Policy 定义了安全组的创建、更新和清理规则,支持三种类型:
## Policy Types
### 1. Common Security Group通用安全组
- 附加基线安全组到资源
- 允许产品团队添加额外规则
- 确保所有账户拥有基础安全保护
### 2. Audit and Enforcement审计与强制
- 检测并拒绝过度宽松的规则
- 支持手动修复或自动修复
- 提供合规性仪表板视图
### 3. Unused Security Group Cleanup清理未使用
- 识别和删除冗余安全组
- 简化安全管理
- 减少攻击面
## Key Features
- 支持 AWS Organizations 组织单位OU级别应用
- 通过 Prefix List 共享规则
- 使用 RAM 实现跨账号资源共享
## Related Concepts
- [[Security Group]]
- [[AWS Firewall Manager]]