How can an administrator secure an ArcGIS Enterprise portal?

Configuring SSL/TLS and secure login methods is a critical way to secure an ArcGIS Enterprise portal. SSL (Secure Sockets Layer) and TLS (Transport Layer Security) provide encryption for data transmitted over the network, ensuring that any sensitive information exchanged between the server and the client remains private and protected from potential eavesdropping or interception. This is particularly important for web-based applications like an ArcGIS Enterprise portal, where users interact with the system over the internet or a network.

Additionally, implementing secure login methods, such as two-factor authentication or Single Sign-On (SSO), enhances security by adding extra layers of verification for users attempting to gain access to the portal. This reduces the risk of unauthorized access and helps maintain the integrity of the system.

While other methods like limiting access to local users might seem effective, they do not address the myriad of security concerns present when users access a system remotely or over the internet. Public Wi-Fi networks pose significant risks, and relying solely on email verification can leave the system vulnerable to phishing attacks and unauthorized account creations. Therefore, the combination of SSL/TLS for secure data transmission and robust login methods is the most effective approach to securing an ArcGIS Enterprise portal.