12 User [numbered = 1, shape = actor, width = 60]
13 Apache [numbered = 2, label = "Apache\nAuthenticates user"]
14 SSSD [numbered = 3, label = "SSSD\nProvides user info"]
15 Proxy [numbered = 4, label = "Proxy Transport\nRequest + Metadata"]
16 AAA [numbered = 5, label = "App Server\nAAA"]