The embodiments of the invention disclose a data packet filtering method and device, gateway equipment and a storage medium. The method comprises the following steps of receiving a data packet; matching the data packet with filtering configuration information, and obtaining the setting state of an associated port of the data packet from the filtering configuration information; acquiring the real link state of the associated port; and filtering the data packet according to the setting state and the real link state. In the invention, on the basis of the existing filtering rule of packet filtering based on network address conversion, data link dynamic detection is added to filter a data packet so that gateway equipment can filter the same data packet received through different paths; and a network flow and the occupation of a network bandwidth are reduced based on transmission reliability, and network bandwidth transmission efficiency and a network defense capability are increased to someextent.