The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate after a 4th generation (4G) communication system such as long-term evolution (LTE). An operating method of a device for a user plane function (UPF) in a core network of a wireless communication system may include receiving rule information for processing a packet from a device for a session management function (SMF), processing a packet including user traffic received from a first device based on the rule, and transmitting the processed packet to a second device. Herein, first device or the second device may be a different device which performs a function related to a user plane.