Part 2: ZTNA vs VPN


In our earlier post we discuss about the basics of the ZTNA (zero-trust network access solution) and where to use ZTNA (zero-trust network access solution). We also discuss that a ZTNA (zero-trust network access solution) is a network access management solution that creates logical access boundaries based on user identities and context.

VPN ( Virtual Private network)

VPN so called Virtual Private network used to connect the corporate offices using the secure tunnel from the remote location and access the applications and services lying inside the corporate networks. 

VPN services are used by most of the world wide organizations to connect remotely and access application. The uses when connect to VPN services of the organization, they need a soft agent on to their desktop/laptop and connect by secure tunnels. 

Fig 1.1- VPN tunnel

VPN supports Layer 2 Tunnel Protocol (L2TP), IPsec and use of both. The combination of Layer 2 Tunnel Protocol (L2TP) and Internet Protocol Security (L2TP/IPsec) creates a highly-secure technology that enables VPN connections across public networks such as the Internet.

ZTNA (zero-trust network access solution)

As you know that ZTNA (zero-trust network access solution) is used to securely accessing corporate applications from remote locations. Ok then what is VPN then... It is also doing the same thing, then what's the difference ?

VPN connects a branch office to a corporate network using a private, encrypted tunnel. It is an appliance-based, customer-managed solution. But VPNs will not provide the zero trust security by which devices, users only verified at the time of login. Is that concern ? 

No, its not but with the new threads and man-in-the middle attacks, DDOS attacks keeps ZTNA (zero-trust network access solution) model more secure than the VPNs. ZTNA (zero-trust network access solution) continuously verified and validated the users, devices throughout the session.

The ZTNA (zero-trust network access solution) platform also uses the principle of least privilege (PoLP), which automatically defaults to the lowest level of access for all users and does not connect users or their devices to corporate networks.

The security controls can be applied inline and in real time with ZTNA (zero-trust network access solution), since it is primarily a cloud-based service.

Approach to the future with ZTNA vs VPN

Security in remote work environments can be based on zero trust, a comprehensive and multi-layered approach.

ZTNA (zero-trust network access solution) deals more deeply with network security than VPNs, which rely mostly on broad network-based protection.

ZTNA (zero-trust network access solution) does not require user devices to be installed with software and easier for third party partners and BYOD devices to connect to corporate resources.

With ZTNA (zero-trust network access solution), there will be less DDOS attacks as it is continuously verified and validated the users, devices throughout the session.

I would say that zero trust can be a more secure, safer alternative to VPNs.