Department of Computer Science and Engineering Department of Electrical and Computer Engineering Standards & Open Source Research Division Telefonica I+D Huawei This document describes a Framework for Interface to Network Security Functions (I2NSF) in [RFC8329] for Security Management Automation (SMA) in Cloud-Based Security Systems. This security management automation facilitates Closed-Loop Security Control, Security Policy Translation, and Security Audit. To support these three features in SMA, this document specifies an extended architecture of the I2NSF framework with new system components and new interfaces. Thus, the SMA in this document can facilitate Intent-Based Security Management with Intent-Based Networking (IBN) in [RFC9315].