Zero Trust Network Access (ZTNA) is a modern way to safeguard apps and services for both in-office and remote users. It integrates technologies and services to provide remote users with secure access to internal applications. In lay terms, ZTNA is a security architecture in which no one is trusted by default, either inside or outside the network. Instead, users must provide proof that they are legitimate before gaining access to network resources.
Anyone authenticated and using a VPN-based legacy network solution is given unrestricted access to everything on the same network. Only a password stops unauthorised users from accessing a resource. ZTNA changes that paradigm. Users can only "view" the programmes and resources that are explicitly allowed by their company's security policy.
In a traditional "castle and moat" cybersecurity approach, businesses rely on physical security measures to protect themselves from cyberattacks. This includes installing strict firewall rules and antivirus software, as well as ensuring that all computer systems are patched regularly. In addition, this approach typically involves staff familiar with basic cybersecurity concepts and practices. The problem with this approach is that it's tough to defend, as anyone with a legitimate reason to get inside can do so.
Companies take a different approach with zero trust network access: they assume that nobody is trustworthy by default - even within their own network! All users must prove themselves before accessing files or resources on company premises or remotely over the internet.
