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linux的netstat命令

時間: 佳洲1085 分享

linux的netstat命令

  Linux系統(tǒng)下netstat命令可以顯示網(wǎng)絡(luò)的狀態(tài)。下面由學習啦小編為大家整理了linux的netstat命令的相關(guān)知識,希望大家喜歡!

  linux的netstat命令詳解

  Linux netstat命令用于顯示網(wǎng)絡(luò)狀態(tài)。利用netstat指令可讓你得知整個Linux系統(tǒng)的網(wǎng)絡(luò)情況。

  1.語法

  netstat [-acCeFghilMnNoprstuvVwx][-A<網(wǎng)絡(luò)類型>][--ip]

  2.參數(shù)說明:

  -a或--all 顯示所有連線中的Socket。

  -A<網(wǎng)絡(luò)類型>或--<網(wǎng)絡(luò)類型> 列出該網(wǎng)絡(luò)類型連線中的相關(guān)地址。

  -c或--continuous 持續(xù)列出網(wǎng)絡(luò)狀態(tài)。

  -C或--cache 顯示路由器配置的快取信息。

  -e或--extend 顯示網(wǎng)絡(luò)其他相關(guān)信息。

  -F或--fib 顯示FIB。

  -g或--groups 顯示多重廣播功能群組組員名單。

  -h或--help 在線幫助。

  -i或--interfaces 顯示網(wǎng)絡(luò)界面信息表單。

  -l或--listening 顯示監(jiān)控中的服務(wù)器的Socket。

  -M或--masquerade 顯示偽裝的網(wǎng)絡(luò)連線。

  -n或--numeric 直接使用IP地址,而不通過域名服務(wù)器。

  -N或--netlink或--symbolic 顯示網(wǎng)絡(luò)硬件外圍設(shè)備的符號連接名稱。

  -o或--timers 顯示計時器。

  -p或--programs 顯示正在使用Socket的程序識別碼和程序名稱。

  -r或--route 顯示Routing Table。

  -s或--statistice 顯示網(wǎng)絡(luò)工作信息統(tǒng)計表。

  -t或--tcp 顯示TCP傳輸協(xié)議的連線狀況。

  -u或--udp 顯示UDP傳輸協(xié)議的連線狀況。

  -v或--verbose 顯示指令執(zhí)行過程。

  -V或--version 顯示版本信息。

  -w或--raw 顯示RAW傳輸協(xié)議的連線狀況。

  -x或--unix 此參數(shù)的效果和指定"-A unix"參數(shù)相同。

  --ip或--inet 此參數(shù)的效果和指定"-A inet"參數(shù)相同。

  linux的netstat命令實例

  顯示詳細的網(wǎng)絡(luò)狀況

  # netstat -a

  顯示當前戶籍UDP連接狀況

  # netstat -nu

  顯示UDP端口號的使用情況

  # netstat -apu

  Active Internet connections (servers and established)

  Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name

  udp 0 0 *:32768 *:* -

  udp 0 0 *:nfs *:* -

  udp 0 0 *:641 *:* 3006/rpc.statd

  udp 0 0 192.168.0.3:netbios-ns *:* 3537/nmbd

  udp 0 0 *:netbios-ns *:* 3537/nmbd

  udp 0 0 192.168.0.3:netbios-dgm *:* 3537/nmbd

  udp 0 0 *:netbios-dgm *:* 3537/nmbd

  udp 0 0 *:tftp *:* 3346/xinetd

  udp 0 0 *:999 *:* 3366/rpc.rquotad

  udp 0 0 *:sunrpc *:* 2986/portmap

  udp 0 0 *:ipp *:* 6938/cupsd

  udp 0 0 *:1022 *:* 3392/rpc.mountd

  udp 0 0 *:638 *:* 3006/rpc.statd

  顯示網(wǎng)卡列表

  # netstat -i

  Kernel Interface table

  Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg

  eth0 1500 0 181864 0 0 0 141278 0 0 0 BMRU

  lo 16436 0 3362 0 0 0 3362 0 0 0 LRU

  顯示組播組的關(guān)系

  # netstat -g

  IPv6/IPv4 Group Memberships

  Interface RefCnt Group

  --------------- ------ ---------------------

  lo 1 ALL-SYSTEMS.MCAST.NET

  eth0 1 ALL-SYSTEMS.MCAST.NET

  lo 1 ff02::1

  eth0 1 ff02::1:ff0a:b0c

  eth0 1 ff02::1

  顯示網(wǎng)絡(luò)統(tǒng)計信息

  # netstat -s

  Ip:

  184695 total packets received

  0 forwarded

  0 incoming packets discarded

  184687 incoming packets delivered

  143917 requests sent out

  32 outgoing packets dropped

  30 dropped because of missing route

  Icmp:

  676 ICMP messages received

  5 input ICMP message failed.

  ICMP input histogram:

  destination unreachable: 44

  echo requests: 287

  echo replies: 345

  304 ICMP messages sent

  0 ICMP messages failed

  ICMP output histogram:

  destination unreachable: 17

  echo replies: 287

  Tcp:

  473 active connections openings

  28 passive connection openings

  4 failed connection attempts

  11 connection resets received

  1 connections established

  178253 segments received

  137936 segments send out

  29 segments retransmited

  0 bad segments received.

  336 resets sent

  Udp:

  5714 packets received

  8 packets to unknown port received.

  0 packet receive errors

  5419 packets sent

  TcpExt:

  1 resets received for embryonic SYN_RECV sockets

  ArpFilter: 0

  12 TCP sockets finished time wait in fast timer

  572 delayed acks sent

  3 delayed acks further delayed because of locked socket

  13766 packets directly queued to recvmsg prequeue.

  1101482 packets directly received from backlog

  19599861 packets directly received from prequeue

  46860 packets header predicted

  14541 packets header predicted and directly queued to user

  TCPPureAcks: 12259

  TCPHPAcks: 9119

  TCPRenoRecovery: 0

  TCPSackRecovery: 0

  TCPSACKReneging: 0

  TCPFACKReorder: 0

  TCPSACKReorder: 0

  TCPRenoReorder: 0

  TCPTSReorder: 0

  TCPFullUndo: 0

  TCPPartialUndo: 0

  TCPDSACKUndo: 0

  TCPLossUndo: 0

  TCPLoss: 0

  TCPLostRetransmit: 0

  TCPRenoFailures: 0

  TCPSackFailures: 0

  TCPLossFailures: 0

  TCPFastRetrans: 0

  TCPForwardRetrans: 0

  TCPSlowStartRetrans: 0

  TCPTimeouts: 29

  TCPRenoRecoveryFail: 0

  TCPSackRecoveryFail: 0

  TCPSchedulerFailed: 0

  TCPRcvCollapsed: 0

  TCPDSACKOldSent: 0

  TCPDSACKOfoSent: 0

  TCPDSACKRecv: 0

  TCPDSACKOfoRecv: 0

  TCPAbortOnSyn: 0

  TCPAbortOnData: 1

  TCPAbortOnClose: 0

  TCPAbortOnMemory: 0

  TCPAbortOnTimeout: 3

  TCPAbortOnLinger: 0

  TCPAbortFailed: 3

  TCPMemoryPressures: 0

  顯示監(jiān)聽的套接口

  # netstat -l

  Active Internet connections (only servers)

  Proto Recv-Q Send-Q Local Address Foreign Address State

  tcp 0 0 *:32769 *:* LISTEN

  tcp 0 0 *:nfs *:* LISTEN

  tcp 0 0 *:644 *:* LISTEN

  tcp 0 0 *:1002 *:* LISTEN

  tcp 0 0 *:netbios-ssn *:* LISTEN

  tcp 0 0 *:sunrpc *:* LISTEN

  tcp 0 0 vm-dev:ipp *:* LISTEN

  tcp 0 0 *:telnet *:* LISTEN

  tcp 0 0 *:601 *:* LISTEN

  tcp 0 0 *:microsoft-ds *:* LISTEN

  tcp 0 0 *:http *:* LISTEN

  tcp 0 0 *:ssh *:* LISTEN

  tcp 0 0 *:https *:* LISTEN

  udp 0 0 *:32768 *:*

  udp 0 0 *:nfs *:*

  udp 0 0 *:641 *:*

  udp 0 0 192.168.0.3:netbios-ns *:*

  udp 0 0 *:netbios-ns *:*

  udp 0 0 192.168.0.3:netbios-dgm *:*

  udp 0 0 *:netbios-dgm *:*

  udp 0 0 *:tftp *:*

  udp 0 0 *:999 *:*

  udp 0 0 *:sunrpc *:*

  udp 0 0 *:ipp *:*

  udp 0 0 *:1022 *:*

  udp 0 0 *:638 *:*

  Active UNIX domain sockets (only servers)

  Proto RefCnt Flags Type State I-Node Path

  unix 2 [ ACC ] STREAM LISTENING 10621 @/tmp/fam-root-

  unix 2 [ ACC ] STREAM LISTENING 7096 /var/run/acpid.socket

  unix 2 [ ACC ] STREAM LISTENING 9792 /tmp/.gdm_socket

  unix 2 [ ACC ] STREAM LISTENING 9927 /tmp/.X11-unix/X0

  unix 2 [ ACC ] STREAM LISTENING 10489 /tmp/ssh-lbUnUf4552/agent.4552

  unix 2 [ ACC ] STREAM LISTENING 10558 /tmp/ksocket-root/kdeinit__0

  unix 2 [ ACC ] STREAM LISTENING 10560 /tmp/ksocket-root/kdeinit-:0

  unix 2 [ ACC ] STREAM LISTENING 10570 /tmp/.ICE-unix/dcop4664-1270815442

  unix 2 [ ACC ] STREAM LISTENING 10843 /tmp/.ICE-unix/4735

  unix 2 [ ACC ] STREAM LISTENING 10591 /tmp/ksocket-root/klauncherah3arc.slave-socket

  unix 2 [ ACC ] STREAM LISTENING 7763 /var/run/iiim/.iiimp-unix/9010

  unix 2 [ ACC ] STREAM LISTENING 11047 /tmp/orbit-root/linc-1291-0-1e92c8082411

  unix 2 [ ACC ] STREAM LISTENING 11053 /tmp/orbit-root/linc-128e-0-dc070659cbb3

  unix 2 [ ACC ] STREAM LISTENING 8020 /var/run/dbus/system_bus_socket

  unix 2 [ ACC ] STREAM LISTENING 58927 /tmp/mcop-root/vm-dev-2c28-4beba75f

  unix 2 [ ACC ] STREAM LISTENING 7860 /tmp/.font-unix/fs7100

  unix 2 [ ACC ] STREAM LISTENING 7658 /dev/gpmctl

  unix 2 [ ACC ] STREAM LISTENING 10498 @/tmp/dbus-s2MLJGO5Ci

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