Communication apparatus having network communication function, control method for the communication apparatus, and storage medium
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United States of America Patent
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Jun 10, 2014
Grant Date -
Apr 12, 2012
app pub date -
Sep 23, 2011
filing date -
Sep 23, 2011
priority date (Note) -
Withdrawn
status (Latency Note)
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Abstract
A communication apparatus having a communication function, which is capable of improving security while ensuring convenience in network communication using the ICMP Echo protocol. It is determined whether or not a source of a received packet is an apparatus lies in the same network as a network in which the communication apparatus is installed. According to the determination result, whether or not to respond to the received packet is judged based on one of a first judgment condition used in a case where the source lies in the same network as the network in which the communication apparatus is installed, and a second judgment condition used in a case where the source does not lie in the same network as the network in which the communication apparatus is installed. According to the judgment result, a response to the received packet is sent back.
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