netstat (example)
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netstat
Ip:
Forwarding: 2
617002 total packets received
0 forwarded
0 incoming packets discarded
617002 incoming packets delivered
608841 requests sent out
20 outgoing packets dropped
Icmp:
465 ICMP messages received
43 input ICMP message failed
ICMP input histogram:
destination unreachable: 89
echo requests: 376
761 ICMP messages sent
0 ICMP messages failed
ICMP output histogram:
destination unreachable: 385
echo replies: 376
IcmpMsg:
InType3: 89
InType8: 376
OutType0: 376
OutType3: 385
Tcp:
3077 active connection openings
14213 passive connection openings
105 failed connection attempts
40 connection resets received
3 connections established
615718 segments received
608833 segments sent out
4991 segments retransmitted
2032 bad segments received
8554 resets sent
InCsumErrors: 2032
Udp:
424 packets received
395 packets to unknown port received
0 packet receive errors
464 packets sent
0 receive buffer errors
0 send buffer errors
UdpLite:
TcpExt:
94 resets received for embryonic SYN_RECV sockets
3274 TCP sockets finished time wait in fast timer
1 packetes rejected in established connections because of timestamp
31065 delayed acks sent
1 delayed acks further delayed because of locked socket
Quick ack mode was activated 628 times
270348 packet headers predicted
72374 acknowledgments not containing data payload received
224959 predicted acknowledgments
TCPSackRecovery: 71
Detected reordering 7 times using SACK
Detected reordering 1 times using reno fast retransmit
Detected reordering 1 times using time stamp
1 congestion windows partially recovered using Hoe heuristic
TCPDSACKUndo: 6
122 congestion windows recovered without slow start after partial ack
TCPLostRetransmit: 1
TCPSackFailures: 2
162 fast retransmits
5 retransmits in slow start
TCPTimeouts: 1563
TCPLossProbes: 1827
TCPLossProbeRecovery: 544
TCPSackRecoveryFail: 10
TCPDSACKOldSent: 647
TCPDSACKOfoSent: 1
TCPDSACKRecv: 506
5 connections reset due to unexpected data
3 connections reset due to early user close
150 connections aborted due to timeout
TCPDSACKIgnoredOld: 2
TCPDSACKIgnoredNoUndo: 351
TCPSpuriousRTOs: 1
TCPSackShifted: 47
TCPSackMerged: 92
TCPSackShiftFallback: 189
TCPRcvCoalesce: 28310
TCPOFOQueue: 663
TCPOFOMerge: 1
TCPFromZeroWindowAdv: 24
TCPToZeroWindowAdv: 24
TCPWantZeroWindowAdv: 13
TCPSynRetrans: 1197
TCPOrigDataSent: 474722
TCPHystartDelayDetect: 2
TCPHystartDelayCwnd: 64
TCPACKSkippedSeq: 3
TCPKeepAlive: 36
IpExt:
InOctets: 1208553310
OutOctets: 1067402986
InNoECTPkts: 615863
InECT0Pkts: 4695
InCEPkts: 4
Sctp:
0 Current Associations
0 Active Associations
0 Passive Associations
0 Number of Aborteds
0 Number of Graceful Terminations
0 Number of Out of Blue packets
0 Number of Packets with invalid Checksum
0 Number of control chunks sent
0 Number of ordered chunks sent
0 Number of Unordered chunks sent
0 Number of control chunks received
0 Number of ordered chunks received
0 Number of Unordered chunks received
0 Number of messages fragmented
0 Number of messages reassembled
0 Number of SCTP packets sent
0 Number of SCTP packets received
See also[edit]
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