Palo Alto Networks Trends

Ztna, also known as Zero Trust Network Access, is a security model that implements an adaptive trust model where access to a network or an application is only granted after explicit authorization. It creates an identity- and context-based, logical access boundary around an application or set. It is different from VPN as it only provides access to explicitly authorized applications and services, while VPN provides direct tunneled access to an endpoint on a corporate network. Ztna is considered better than VPN as it offers logical access perimeter and enables micro segmentation to protect assets outside the traditional perimeter. Ztna model offers secure access to the network while leaving applications vulnerable. In contrast, the Zero Trust Application Access (ZTAA) model provides secure application access only after device and user authentication. The difference between Ztna and SASE is that Ztna is the enforcement officer that ensures the perimeter is protected at the user level, while SASE is the security framework built from several tools combined.