How to recover login window in Liferay?

I faced interesting situation when I was developing a Liferay portal:

I accidentally removed the Liferay login window! On Liferay everything is configured when you're logged in, but what to do if you remove the portlet where the login used to be and logout?

(By removing the portlet I don't mean undeploying but removin开发者_如何学Cg the instance from the live version of Liferay. So when you come to the main page, no login button is shown anymore!)

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I found one solution: http://www.myliferayserver.com/c/portal/login shows a login window although it would be deleted from the main page. After login to that page I could add the login back to its original place to main page of my portal.