Patent ID: 8749805

Claim:
A method of processing at least one packet in a network image forming apparatus including a plurality of network interfaces having different network addresses and different allowable services respectively, the method comprising: setting an allowable service for each of the plurality of network interfaces; receiving at least one packet through at least one network interface among the plurality of network interfaces; comparing information included in the received packet with service information saved for network interface through which the packet is received; and performing an operation requested by the received packet when the operation requested by the received packet is determined to correspond with the allowable service set for the network interface through which the packet is received based on the comparing result, wherein the operation requested by the received packet is at least one of printing operation, scanning operation or faxing operation, wherein the plurality of network interfaces have different network addresses and different allowable services respectively, wherein the at least one packet includes an operation request, and the network interface is a path for receiving the operation request by receiving the at least one packet, wherein user account information which allows a plurality of users to use the plurality of network interfaces differently each other are saved in the network image forming apparatus, wherein the comparing information included in the received packet with service information saved for each network interface comprises comparing the information included in the received packet with the saved user account information, and wherein the user account information includes allowable protocol and allowable network interface for each user.