linux的netstat命令
linux的netstat命令
Linux系統下netstat命令可以顯示網絡的狀態。下面由學習啦小編為大家整理了linux的netstat命令的相關知識，希望大家喜歡!
linux的netstat命令詳解
Linux netstat命令用于顯示網絡狀態。利用netstat指令可讓你得知整個Linux系統的網絡情況。
1.語法
netstat [-acCeFghilMnNoprstuvVwx][-A<網絡類型>][--ip]
2.參數說明：
-a或--all 顯示所有連線中的Socket。
-A<網絡類型>或--<網絡類型> 列出該網絡類型連線中的相關地址。
-c或--continuous 持續列出網絡狀態。
-C或--cache 顯示路由器配置的快取信息。
-e或--extend 顯示網絡其他相關信息。
-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 顯示網絡界面信息表單。
-l或--listening 顯示監控中的服務器的Socket。
-M或--masquerade 顯示偽裝的網絡連線。
-n或--numeric 直接使用IP地址，而不通過域名服務器。
-N或--netlink或--symbolic 顯示網絡硬件外圍設備的符號連接名稱。
-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 顯示網絡工作信息統計表。
-t或--tcp 顯示TCP傳輸協議的連線狀況。
-u或--udp 顯示UDP傳輸協議的連線狀況。
-v或--verbose 顯示指令執行過程。
-V或--version 顯示版本信息。
-w或--raw 顯示RAW傳輸協議的連線狀況。
-x或--unix 此參數的效果和指定"-A unix"參數相同。
--ip或--inet 此參數的效果和指定"-A inet"參數相同。
linux的netstat命令實例
顯示詳細的網絡狀況
# 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
顯示網絡統計信息
# 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