Introduction

The Cisco Secure Firewall 4200 is a standalone modular security services platform that includes the Secure Firewall 4215, 4225, and 4245.

The Secure Firewall 4200 supports Cisco Secure Firewall Threat Defense and Cisco Secure ASA software. See the Cisco Secure Firewall Threat Defense Compatibility Guide and the Cisco Secure Firewall ASA Compatibility guide, which provide Cisco software and hardware compatibility, including operating system and hosting environment requirements, for each supported version.