Lee Roache scored the only goal of the game as Barnet maintained their lead at the top of the Conference table.
Scarborough keeper Leigh Walker was in impressive form, denying Giuliano Grazioli, Nick Bailey and Ismail Yakubu as Barnet began aggressively.
Dwane Lee rattled the woodwork as the home side maintained their dominance, but could not find a way through.
Neil Redfearn went close for the visitors before Roache stabbed home Simon King's cross for the winner.
Barnet: Tynan, Hendon, Yakubu, King, Clist, Bailey, Lee,
Sinclair (Lopez 90), Batt (Roache 74), Grazioli, Hatch.
Subs Not Used: Gore, Strevens, McBean.
Booked: Grazioli, Hatch.
Goals: Roache 77.
Scarborough: Walker, Baker, Foot, Hotte, Nicholson, Thompson,
Redfearn, Cryan, Gilroy (Kerr 80), Senior, Hackworth.
Subs Not Used: Hayfield, Gill, Burton, Lyth.
Booked: Gilroy, Senior.
Att: 2,504
Ref: G Ward (Kent).