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      學(xué)習(xí)啦 > 學(xué)習(xí)電腦 > 操作系統(tǒng) > Linux教程 > linux的netstat命令

      linux的netstat命令

      時(shí)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(xué)習(xí)啦小編為大家整理了linux的netstat命令的相關(guān)知識(shí),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(gè)Linux系統(tǒng)的網(wǎng)絡(luò)情況。

        1.語(yǔ)法

        netstat [-acCeFghilMnNoprstuvVwx][-A<網(wǎng)絡(luò)類(lèi)型>][--ip]

        2.參數(shù)說(shuō)明:

        -a或--all 顯示所有連線(xiàn)中的Socket。

        -A<網(wǎng)絡(luò)類(lèi)型>或--<網(wǎng)絡(luò)類(lèi)型> 列出該網(wǎng)絡(luò)類(lèi)型連線(xiàn)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(xiàn)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(xiàn)。

        -n或--numeric 直接使用IP地址,而不通過(guò)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(hào)連接名稱(chēng)。

        -o或--timers 顯示計(jì)時(shí)器。

        -p或--programs 顯示正在使用Socket的程序識(shí)別碼和程序名稱(chēng)。

        -r或--route 顯示Routing Table。

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

        -t或--tcp 顯示TCP傳輸協(xié)議的連線(xiàn)狀況。

        -u或--udp 顯示UDP傳輸協(xié)議的連線(xiàn)狀況。

        -v或--verbose 顯示指令執(zhí)行過(guò)程。

        -V或--version 顯示版本信息。

        -w或--raw 顯示RAW傳輸協(xié)議的連線(xiàn)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(shí)例

        顯示詳細(xì)的網(wǎng)絡(luò)狀況

        # netstat -a

        顯示當(dāng)前戶(hù)籍UDP連接狀況

        # netstat -nu

        顯示UDP端口號(hào)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(jì)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(tīng)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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