> I've been looking at https://wiki.jasig.org/display/CASUM/Single+Sign+Out
> and am wondering if I would be correct in assuming that single sign-out is
> on by default?

It's on by default in the sense that the server always attempts to
send a SAML LogoutRequest request to all clients when the SSO session
ends.  That notice is only helpful, though, if clients receive it and
understand it.  Most of the official clients (Java, phpCAS,
mod_auth_cas, .NET) can be configured to handle LogoutRequest
correctly.  Since there's really not a "default" configuration for the
clients, single sign-out effectively works only if your CAS server can
contact all the clients and they all have been configured to handle
the LogoutRequest message.  Since client setup is required, I don't
think it's correct to say single sign-out is enabled by default.

M

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