update README

Author: 依诺

README.md

@@ -12,6 +12,7 @@
 ## Core Features
 **Secure Access**
 - **Account and Password Security Management**：Safely manage database account passwords without manual maintenance, effectively preventing sensitive information leakage.
+- **Intranet Access Support**：Enables database access through an internal network, keeping data within the premises and significantly enhancing data security and privacy protection.
 - **Fine-grained Permission Control**：Supports instance, database, table, field, and row-level access control, precisely restricting caller permissions to prevent unauthorized operations and ensure data security.
 - **High-risk SQL Identification and Blocking**: Built-in rich rule engine that identifies and blocks potential high-risk SQL in real time to mitigate security risks.
 - **SQL Audit Trail**: Records all SQL operation logs, supporting full traceability and compliance audits to meet regulatory requirements.

doc/README-zh-cn.md

@@ -11,6 +11,7 @@
 ## 核心特性
 **安全访问**
 - **账号密码安全托管**：安全管理数据库账号密码，无需人工维护，有效防止敏感信息泄露。
+- **支持内网访问**：提供内网访问数据库能力，数据不出域，有效保障数据安全与隐私。
 - **细粒度权限管控**：支持实例、库、表、字段及行级别的精细化访问控制，精准限制调用方权限，杜绝越权操作，保障数据安全。
 - **高危SQL识别与拦截**：内置丰富的规则引擎，实时识别并拦截潜在高危SQL，防范安全风险。
 - **SQL审计追踪**：记录所有SQL操作日志，支持完整追溯与合规审计，满足监管要求。