How to hide username and password in url

Hi All,

We are getting this issue after login into portal 7.0.

http://<host>:<port>/irj/portal?login_submit=on&login_do_redirect=1&no_cert_storing=on&checksubmit=on&j_user=username&j_password=password&uidPasswordLogon=Log+on&j_authscheme=default.

In URL username and password is displaying.

How to hide username and password in url?

Please help me regarding this issue.

Thanks & Regards,

Preethi Ande