Cisco ISE and pxGrid use the IETF (Internet Engineering Task Force) standards to integrate with each other and with other interoperable security platforms. IETF is an open, international community of network designers, operators, vendors, and researchers who produce voluntary standards for the Internet. Cisco pxGrid is based on the IETF standards-track XMPP (Extensible Messaging and Presence Protocol) and RESTCONF (Representational State Transfer Configuration Protocol) technologies. These standards enable Cisco pxGrid to provide a scalable, secure, and open data-sharing platform that supports multiple security products and services. Cisco ISE uses the IETF standards-track RADIUS (Remote Authentication Dial-In User Service) and TACACS+ (Terminal Access Controller Access-Control System Plus) protocols to provide network access control and policy enforcement. Cisco ISE also supports the IETF standards-track SXP (Security Group Tag eXchange Protocol) to propagate security group tags across the network. By using the IETF standards, Cisco ISE and pxGrid can interoperate with other security platforms that support the same standards, such as Infoblox, Splunk, Rapid7, and more. References:
Cisco pxGrid - Cisco
ISE pxGrid General Information & FAQ - Cisco Community
How To: Integrate Cisco WSA using ISE and TrustSec via pxGrid
Infoblox DDI, Cisco ISE, and the pxGrid Solution Platform
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