Patent ID: 7877671

Claim:
A computer-readable recording medium that stores therein a computer program to be executed on a control circuit of a communication apparatus for performing communication control processing, the communication apparatus being present between each of first and second local area networks (LANs) that includes a user network and a wide area network (WAN), and relaying a packet exchanged between the first and second LANs through the WAN while correcting an error in the packet, the computer program causing the control circuit to execute: determining whether to perform error correction on a packet received from the first LAN; adding, to a packet to be transmitted to the second LAN, information indicating that the packet is an error-correction target when the packet has been input from a predetermined port among a plurality of ports of an interface to the first LAN; and instantly transferring the packet to the second LAN when it is determined not to perform the error correction, wherein the communication apparatus includes a first communication apparatus present between the first LAN and the WAN, and a second communication apparatus present between the second LAN and the WAN.