Zero Trust Network Access (ZTNA) is literally zero trust network access, which enables network access while realizing the basic principle of zero trust: "Trust nothing." Until now, remote access using VPN has been the mainstream.

Especially around 2020, when the coronavirus was in full swing, VPNs became rapidly popular, and all employees started using VPNs to access internal systems, whereas previously only some employees could use them. There was a problem with the load easily increasing, which caused problems such as poor connections and delays.

In terms of security, attacks that target vulnerabilities in the VPN products themselves also occur, and if an external attacker is allowed to infiltrate via the VPN, they will be able to access all company resources, leading to a major incident.

Additionally, until now, the main routes for malware intrusion have been the web and email. Nowadays, VPNs account for over 60% to 80% of intrusions. For this reason, an increasing number of companies are replacing VPN with ZTNA. In the case of ZTNA, it is possible to design services and resources that can be accessed based on appropriate access rights for each user according to policies. Unlike a VPN, this means that you will not be able to access all of your company's resources, reducing risks.

In addition, ZTNA is deployed on the cloud, which solves the load problem, and because it operates like a reverse proxy on ZTNA's cloud, it has a structure that does not allow direct access to internal resources, providing stronger security. Masu.