The Nittany Lions have dropped six of their last seven games.
Cephas entered the portal after not playing a snap in the Peach Bowl.
Dylan Lugris was the lone goal scorer for the Nittany Lions.
Dupuis spent the last four seasons as the Old Dominion wide receivers coach.
Lustig brings over 20 years of coaching experience to Penn State.
The hiring comes after the departure of former special teams coordinator Stacy Collins.