Network security device and hardware firewall device

The invention relates to the field of hardware firewalls, and discloses a network security device and a hardware firewall device.The network security device comprises a storage box, the two sides of the inner wall of the storage box are each provided with a fixing structure, and each fixing structure comprises a movable rod, a movable column, a plate body, a clamping plate, a connecting block, a limiting block, an anti-skid pad, a locking block, a rolling wheel and a stroke groove; when extrusion force towards one side is applied to the clamping plate, the clamping plate can drive the moving column to move to the low concave position along the stroke groove through the movable rod, and the moving column is changed from an inclined shape to a vertical shape to be matched with the locking block to form clamping force. According to the fixing structure, the hardware firewall can be quickly disassembled and assembled through cooperation of a clamping plate, a movable rod and a plate body, the hardware firewall ca