The document discusses Mule's support for SAML (Security Assertion Markup Language) for exchanging security information between federated systems. It notes that the current Mule implementation supports SAML 1.1 with CXF web services only. It provides instructions on adding the SAML module JAR, configuring the security manager and security realms, and configuring security filters on CXF endpoints. It also briefly describes the two SAML profiles: sender vouches and holder of key.