Kettering and Cambridge shared the points as a game of few chances finished goalless.
Tom Shaw saw his shot come back off the post for the U's in the first half, while at the other end Moses Ashikodi headed tamely at Danny Naisbitt.
Cambridge finished strongly as Ashley Carew forced a save from Lawrie Walker, while Shaw hit the post for a second time with a volley from 12 yards.
But the Poppies almost snatched it in injury time when Jerel Ifil fired over.
Kettering: Walker, Phil Ifil, Jerel Ifil, Taft, Davis, Noubissie, Meechan, Navarro, Kelly (Dossou 19), Ashikodi, Marna. Subs Not Used: Haxhia, Jones, Dance.
Booked: Jerel Ifil, Ashikodi.
Cambridge Utd: Naisbitt, Roberts, Coulson, Wylde, Jennings, Eades (Thorpe 68), Jarvis, Shaw, Platt (Patrick 68), Carew, Berry. Subs Not Used: McAuley, Marriott, Hudson.
Ref: Graham Horwood (Bedfordshire).