INET_DISCARD_REASON - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// fwpsk.h

typedef enum {
  InetDiscardSourceUnspecified = 0,
  InetDiscardDestinationMulticast = 1,
  InetDiscardHeaderInvalid = 2,
  InetDiscardChecksumInvalid = 3,
  InetDiscardEndpointNotFound = 4,
  InetDiscardConnectedPath = 5,
  InetDiscardSessionState = 6,
  InetDiscardReceiveInspection = 7,
  InetDiscardAckInvalid = 8,
  InetDiscardExpectedSyn = 9,
  InetDiscardRst = 10,
  InetDiscardSynRcvdSyn = 11,
  InetDiscardSimultaneousConnect = 12,
  InetDiscardPawsFailed = 13,
  InetDiscardLandAttack = 14,
  InetDiscardMissedReset = 15,
  InetDiscardOutsideWindow = 16,
  InetDiscardDuplicateSegment = 17,
  InetDiscardClosedWindow = 18,
  InetDiscardTcbRemoved = 19,
  InetDiscardFinWait2 = 20,
  InetDiscardReassemblyConflict = 21,
  InetDiscardFinReceived = 22,
  InetDiscardListenerInvalidFlags = 23,
  InetDiscardUrgentDeliveryAllocationFailure = 24,
  InetDiscardTcbNotInTcbTable = 25,
  InetDiscardTimeWaitTcbReceivedRstOutsideWindow = 26,
  InetDiscardTimeWaitTcbSynAndOtherFlags = 27,
  InetDiscardTimeWaitTcb = 28,
  InetDiscardSynAckWithFastopenCookieRequest = 29,
  InetDiscardPauseAccept = 30,
  InetDiscardSynAttack = 31,
  InetDiscardAcceptInspection = 32,
  InetDiscardAcceptRedirection = 33,
  InetDiscardReasonMaxEnumValue
} INET_DISCARD_REASON, *PINET_DISCARD_REASON;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ne-fwpsk-inet_discard_reason)

Description

The INET_DISCARD_REASON enum defines the possible reasons that data is discarded by one of the transport layers.

Constants

InetDiscardSourceUnspecified:0

The outgoing packet's source address is unspecified.

InetDiscardDestinationMulticast:1

The outgoing packet's destination address is an unspecified address, and the transport does not support multicast addresses.

InetDiscardHeaderInvalid:2

The packet has an invalid header.

InetDiscardChecksumInvalid:3

The packet's checksum did not match.

InetDiscardEndpointNotFound:4

The intended endpoint for the packet could not be found.

InetDiscardConnectedPath:5

The packet remote address does not match the remote address of a connected endpoint.

InetDiscardSessionState:6

The packet cannot be delivered based on network layer information.

InetDiscardReceiveInspection:7

The connection was closed due to a receive inspection failure.

InetDiscardAckInvalid:8

The packet is an invalid ACK segment.

InetDiscardExpectedSyn:9

A SYN packet was expected but not received.

InetDiscardRst:10

The packet is an invalid RST segment.

InetDiscardSynRcvdSyn:11

A TCP connection in SYN_RCVD state received another SYN segment.

InetDiscardSimultaneousConnect:12

A TCP connection has encountered the simultaneous-connect condition.

InetDiscardPawsFailed:13

A TCP PAWS check failed.

InetDiscardLandAttack:14

The packet was detected as part of a LAND (Local Area Network Denial) attack,

InetDiscardMissedReset:15

An SYN segment outside the receive window was received on a SYN_RCVD connection. An RST may have been missed.

InetDiscardOutsideWindow:16

A TCP segment was outside the receive window.

InetDiscardDuplicateSegment:17

A duplicate TCP segment was received.

InetDiscardClosedWindow:18

The TCP receive window was closed.

InetDiscardTcbRemoved:19

The TCP connection was closed.

InetDiscardFinWait2:20

The TCP connection is closing.

InetDiscardReassemblyConflict:21

A TCP data reassembly conflict was encountered on reception of a FIN segment.

InetDiscardFinReceived:22

A FIN was already received on a TCP connection; no more data can be received.

InetDiscardListenerInvalidFlags:23

A segment with invalid flags was received by a listening TCP socket.

InetDiscardUrgentDeliveryAllocationFailure:24

There is insufficient memory for URG delivery on a TCP connection.

InetDiscardTcbNotInTcbTable:25

A TCP connection was closed due to urgent delivery.

InetDiscardTimeWaitTcbReceivedRstOutsideWindow:26

A TIME_WAIT state TCP connection received a RST segment outside the window.

InetDiscardTimeWaitTcbSynAndOtherFlags:27

A TIME_WAIT state TCP connection received a segment with SYN and one or more incompatible flags.

InetDiscardTimeWaitTcb:28

A TIME_WAIT state TCP connection received an invalid segment.

InetDiscardSynAckWithFastopenCookieRequest:29

The packet, a SYN-ACK containing a request for a Fast Open cookie, was discarded.

InetDiscardPauseAccept:30

This indicates the packet was discarded due to a pause in acceptance.

InetDiscardSynAttack:31

The packet was discarded as part of mitigating a SYN flood attack.

InetDiscardAcceptInspection:32

The packet was discarded during the acceptance inspection process.

InetDiscardAcceptRedirection:33

The packet was discarded because it was subject to acceptance redirection.

InetDiscardReasonMaxEnumValue

The maximum value for enumeration.

Remarks

See also

View the official Windows Driver Kit DDI reference

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