i can not on or off firewall
i can not on or off firewall and other option in security & privacy , because authentication is locked and when i click on lock icon to open it , it is on authenticating (not open anyway)
macbook pro 13 retina early 2015*(MF839)
MacBook Pro with Retina display, OS X Yosemite (10.10.2), OS X Yosemite 10.10.3