You are currently accessing CAS over a non-secure connection. Single Sign On WILL NOT WORK. In order to have single sign on work, you MUST log in over HTTPS.
Security ki wajoohat ki bina par aap mehrbani farma kar apnay web browser say Log Out aur Exit zaroor ki jiyay jub aap aisi services isstamal kar chookay hoon jo tasdeek chahti hoon.