how to ensure the security after enabling sso(single sign on) in OTM

 hello, according to the statement in OTM adminstrator guide, after enabling sso in OTM, OTM will provide any authentication .

  If a sso provider passes a authentication ,and then passes the login information in http request including parametre 'appuid' to OTM,user can login HTM and use its function .

how can we avoid user pass the login information in http request including parametre 'appuid' manually ,just input the url in IE address column.

http://$otm_url/glog.webserver.servlet.umt.Login?appuid=***=***

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Oracle Transportation Management supports SSO, where a central application (the SSO provider)
authenticates users and then passes the login information to Oracle Transportation Management,