what is ldap, cas,shiboleth,opensso and their relationsihps

I am a little confused about ldap, cas, shiboleth, opensso and their relationshi开发者_运维知识库ps

can any guru explain a little bit?

Thanks

---

I don't know what you realy want to achive. But I found thes articles on wikipedia quite enlighting to get into this topic. Maybe it helps you to sort your problem out.

• LDAP
• CAS
• OpenSSo
• Shiboleth