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TCP Connection Management and Problem Handling, the Connection Reset Function, and TCP "Keepalives" (Page 2 of 3) Handling Reset Segments When a device receives a segment with the RST bit sent, it tells the device to reset the connection so it can be re-established. Like all segments, the reset itself must be checked to ensure that it is valid (by looking at the value of its Sequence Number field). This prevents a spurious reset from shutting down a connection. Assuming the reset is valid, the handling of the message depends on the state of the device that receives it:
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