NetScaler MAS (Management and Analytics System) is the successor of Citrix Command Center and NetScaler Insight Center. MAS provides automation, monitoring, reporting, and deep analytics of networking products such as NetScaler and SD-WAN.
The following post describes how to configure SAML authentication with NetScaler as the IdP (Identity Provider) and Microsoft Office 365 as the SP (Service Provider). Going above just using SAML, a mixture of Azure Multi-Factor Authentication, User Certificates, LDAP and Negotiate authentication policies are used for authentication from external and internal locations.
Integrating reCAPTCHA by Google with Citrix NetScaler is a great move towards protecting internal resources from attackers. If someone or even a bot of computers are trying to brute force an account, or break in to your system, having reCAPTCHA is sure to defer such activies and make it a very difficult task to achieve.