A Software Defined Perimeter (SDP) is a security framework that restricts network access to resources on a need-to-know basis, effectively making the infrastructure invisible to unauthorized users. It employs a zero trust approach, whereby devices and users must be thoroughly authenticated and authorized before they can access any network services, regardless of their location. This method reduces the attack surface by creating a dynamic, context-aware boundary around networked resources. Timus SASE SDP uses a combination of encrypted connections, thorough identity verification via a rich set of zero-trust policy checklist, and adaptive multi-factor authentication among others to ensure that only authorized users and devices can access the specific network services they require.