> I want to set-up Single Sign On (SSO) solution on Redaht Linux. However, > I have read many web site reference that use different application so I > am confused which on can be used for SSO? > Do I need configure all of them? Do I really need Kerberos 5? Yes. ftp://www.kalamazoolinux.org/pub/pdf/KerberosV-v3.pdf > Is TLS/SSL nessary for SSO? No