While there is no mention of primary or secondary defender, the rule clearly states what is allowed by each.
Rules for a primary defender:
"A dribbler shall not (1) charge into an opponent who has established a legal guarding position, or (2) attempt to dribble between two opponents, or (3) attempt to dribble between an opponent and a boundary, where sufficient space is not available for illegal contact to be
avoided"
"If a defender is able to establish a legal position in the straight line path of the dribbler, the dribbler must avoid contact by changing direction or ending his dribble"
"The dribbler must be in control of his body at all times. If illegal contact occurs, the responsibility is on the dribbler."
" If a dribbler has sufficient space to have his head and shoulders in advance of his defender, the responsibility for illegal contact is on the defender"
"In all guarding situations, a player is entitled to any spot on the court he desires, provided he legally gets to that spot first and without contact with an opponent. If a defensive or offensive player has established a position on the floor and his opponent initiates contact that results in the dislodging of the opponent, a foul should be called IMMEDIATELY"
(YOU MIGHT WANT TO READ THIS ONE: "A player may continue to move after gaining a guarding position in the path of an opponent provided he is not moving directly or obliquely toward his opponent when contact occurs. A player is never permitted to move into the path of an opponent after the opponent
has jumped into the air"

Rules primarily for a secondary defender:
"A defensive player is permitted to establish a legal guarding position in the path of an offensive player who receives a pass inside the lower defensive box regardless of his speed and distance.
A defensive player must allow an airborne player who receives a pass the space to land when the offensive player is inside the lower defensive box.
A player must allow a moving opponent without the ball the opportunity to stop or change direction. The speed of the player will determine the amount of distance an opponent must allow.
If an offensive player causes contact with a defensive player who has established a legal position, an offensive foul shall be called and no points may be scored. A defensive player may turn slightly to protect himself, but is never allowed to bend over and submarine an
opponent."