Enforce network policy and apply Threat Defense inspection at the perimeter with the Cisco Secure Firewall 1230 appliance. The platform carries a Secure Firewall 1230 designation with Threat Defense, making it relevant where the network design calls for a Cisco firewall appliance that combines traffic-policy enforcement with threat-focused security functions. It is a security appliance for placement at a network boundary rather than a general-purpose network connectivity device. CON-SW-CSF1230T names the orderable Cisco configuration associated with the Secure Firewall 1230 Threat Defense appliance. Match the ordering code to the required firewall model and the Threat Defense requirement before installation. At the perimeter, a firewall evaluates traffic against defined security policy, while threat defense functions focus on identifying and controlling suspicious or harmful traffic crossing that boundary. This makes the appliance relevant for protected WAN, internet-edge, branch, and segmented-network connections. The Threat Defense designation distinguishes this configuration within the Secure Firewall 1230 family. It identifies a firewall appliance selection intended for deployments that require both firewall enforcement and threat defense capability in the same security platform designation. Retain the exact code with the technical design when the specified Cisco Secure Firewall 1230 configuration is required, particularly where equipment records distinguish appliance model and security-function designation.