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Spirent TestCenter: Why does an STC emulated device sends RST,ACK messages?

  • Spirent TestCenter.
  • If a TCP SYN packet is sent when a client wants to connect on a particular port, but if the destination/server, for some reason, does not want to accept the packet, it would send an ACK+RST packet.
  • RST/ACK is used to end a TCP session. The packet is ACKnowledging receipt of the previous packet in the stream, and then closing that same session with a RST (Reset) packet being sent to the far end to let it know the connection is being closed.
  • Since this is the normal way TCP operates, there's no way to disable it on the Spirent TestCenter Application.

Product : Spirent TestCenter,TCP