An image forming apparatus manages a plurality of external apparatuses while collecting information regarding each external apparatus through a network using a communication condition acquired through the network. A managed object specifying part specifies managed object apparatuses that are managed by the image forming apparatus through a communication part. An apparatus correspondence communication condition acquiring part receives via the communication part information regarding communication condition corresponding to the managed object apparatuses specified by the managed object specifying part, and stores in a memory part the received information by relating to identification information of the managed object apparatuses. An apparatus monitoring part refers to the communication conditions stored in the memory part on an individual managed object apparatus basis so as to acquire state information via the communication part, and stores the acquired state information in the memory part. An information providing part provides to external apparatuses through the communication part the state information of each managed object apparatus stored in the memory part.