LINUX 網路監控命令(netstat)

muxinqing發表於2015-06-16
netstat命令


netstat命令用來列印Linux中網路系統的狀態資訊,可讓你得知整個Linux系統的網路情況。


netstat(選項)

-a或--all:顯示所有連線中的Socket;
-A或--:列出該網路型別連線中的相關地址;
-c或--continuous:持續列出網路狀態;
-C或--cache:顯示路由器配置的快取資訊;
-e或--extend:顯示網路其他相關資訊;
-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:線上幫助;
-i或--interfaces:顯示網路介面資訊表單;
-l或--listening:顯示監控中的伺服器的Socket;
-M或--masquerade:顯示偽裝的網路連線;
-n或--numeric:直接使用ip地址,而不透過域名伺服器;
-N或--netlink或--symbolic:顯示網路硬體外圍裝置的符號連線名稱;
-o或--timers:顯示計時器;
-p或--programs:顯示正在使用Socket的程式識別碼和程式名稱;
-r或--route:顯示Routing Table;
-s或--statistice:顯示網路工作資訊統計表;
-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:顯示版本資訊;
-w或--raw:顯示RAW傳輸協議的連線狀況;
-x或--unix:此引數的效果和指定"-A unix"引數相同;
--ip或--inet:此引數的效果和指定"-A inet"引數相同。

列出所有埠
[root@smsplatform01 ~]# netstat -a
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State      
tcp        0      0 localhost:ipp               *:*                         LISTEN      
tcp        0      0 localhost:smtp              *:*                         LISTEN      
tcp        0      0 *:40904                     *:*                         LISTEN      
tcp        0      0 localhost:memcache          *:*                         LISTEN      
tcp        0      0 *:sunrpc                    *:*                         LISTEN      
tcp        0      0 smsplatform01:ncube-lm      *:*                         LISTEN      
tcp        0      0 *:ssh                       *:*

列出所有已經再監聽埠
[root@smsplatform01 ~]# netstat -al
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State      
tcp        0      0 localhost:ipp               *:*                         LISTEN      
tcp        0      0 localhost:smtp              *:*                         LISTEN      
tcp        0      0 *:40904                     *:*                         LISTEN      
tcp        0      0 localhost:memcache          *:*                         LISTEN      
tcp        0      0 *:sunrpc                    *:*                         LISTEN      
tcp        0      0 smsplatform01:ncube-lm      *:*                         LISTEN      
tcp        0      0 *:ssh                       *:*                         LISTEN      

列出所有的tcp埠
[root@smsplatform01 ~]# netstat -at
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State      
tcp        0      0 localhost:ipp               *:*                         LISTEN      
tcp        0      0 localhost:smtp              *:*                         LISTEN      
tcp        0      0 *:40904                     *:*                         LISTEN      
tcp        0      0 localhost:memcache          *:*                         LISTEN      
tcp        0      0 *:sunrpc                    *:*                         LISTEN      
tcp        0      0 smsplatform01:ncube-lm      *:*                         LISTEN      
tcp        0      0 *:ssh                       *:*                         LISTEN      
tcp        0      0 smsplatform01:61004         smsplatform02:ncube-lm      ESTABLISHED
tcp        0      0 smsplatform01:61006         smsplatform02:ncube-lm      ESTABLISHED
tcp        0      0 smsplatform01:61007         smsplatform02:ncube-lm      ESTABLISHED
tcp        0      0 smsplatform01:61005         smsplatform02:ncube-lm      ESTABLISHED
tcp        0      0 smsplatform01:ssh           172.20.1.31:13120           ESTABLISHED
tcp        0      0 smsplatform01:ncube-lm      smsplatform01:59954         ESTABLISHED
tcp        0      0 smsplatform01:ssh           172.20.1.31:http-wmap       ESTABLISHED
tcp        0      0 smsplatform01:59954         smsplatform01:ncube-lm      ESTABLISHED

列出所有的udp埠
[root@smsplatform01 ~]# netstat -au
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State      
udp        0      0 *:sunrpc                    *:*                                     
udp        0      0 *:ipp                       *:*                                     
udp        0      0 *:rushd                     *:*                                     
udp        0      0 localhost:745               *:*                                     
udp        0      0 *:17343                     *:*                                     
udp        0      0 *:11648                     *:*  


顯示正在使用Socket的程式識別碼和程式名稱
[root@smsplatform01 ~]# netstat -p
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name   
tcp        0      0 smsplatform01:61004         smsplatform02:ncube-lm      ESTABLISHED 6569/ora_arc0_oracl
tcp        0      0 smsplatform01:61006         smsplatform02:ncube-lm      ESTABLISHED 6577/ora_nsa2_oracl
tcp        0      0 smsplatform01:61007         smsplatform02:ncube-lm      ESTABLISHED 6573/ora_arc2_oracl
tcp        0      0 smsplatform01:61005         smsplatform02:ncube-lm      ESTABLISHED 6575/ora_arc3_oracl
tcp        0      0 smsplatform01:ssh           172.20.1.31:13120           ESTABLISHED 37508/sshd          
tcp        0      0 smsplatform01:ncube-lm      smsplatform01:59954         ESTABLISHED 6155/tnslsnr        
tcp        0      0 smsplatform01:ssh           172.20.1.31:http-wmap       ESTABLISHED 37197/sshd          
tcp        0      0 smsplatform01:59954         smsplatform01:ncube-lm      ESTABLISHED 6313/ora_pmon_oracl

直接使用ip地址,而不透過域名伺服器;

[root@smsplatform01 ~]# netstat -n
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State      
tcp        0      0 172.20.1.34:61004           172.20.1.35:1521            ESTABLISHED
tcp        0      0 172.20.1.34:61006           172.20.1.35:1521            ESTABLISHED
tcp        0      0 172.20.1.34:61007           172.20.1.35:1521            ESTABLISHED
tcp        0      0 172.20.1.34:61005           172.20.1.35:1521            ESTABLISHED
tcp        0    224 172.20.1.34:22              172.20.1.31:13120           ESTABLISHED
tcp        0      0 172.20.1.34:1521            172.20.1.34:59954           ESTABLISHED
tcp        0      0 172.20.1.34:22              172.20.1.31:8990            ESTABLISHED
tcp        0      0 172.20.1.34:59954           172.20.1.34:1521            ESTABLISHED
Active UNIX domain sockets (w/o servers)
Proto RefCnt Flags       Type       State         I-Node Path
unix  18     [ ]         DGRAM                    20061  /dev/log
unix  2      [ ]         DGRAM                    17931  @/org/kernel/udev/udevd
unix  2      [ ]         DGRAM                    20251  @/org/freedesktop/hal/udev_event
unix  3      [ ]         STREAM     CONNECTED     20465  
unix  3      [ ]         STREAM     CONNECTED     8890   @/tmp/.X11-unix/X0
unix  3      [ ]         STREAM     CONNECTED     17266  
unix  3      [ ]         STREAM     CONNECTED     11029  /tmp/orbit-gdm/linc-1a88-0-7b17782b4443e
unix  3      [ ]         STREAM     CONNECTED     20121  
unix  3      [ ]         STREAM     CONNECTED     20455  

顯示所有在用埠tcp程式名
[root@smsplatform01 ~]# netstat -antp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name   
tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN      5731/cupsd          
tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      5993/master         
tcp        0      0 0.0.0.0:40904               0.0.0.0:*                   LISTEN      5657/rpc.statd      
tcp        0      0 127.0.0.1:11211             0.0.0.0:*                   LISTEN      37557/memcached     
tcp        0      0 0.0.0.0:111                 0.0.0.0:*                   LISTEN      5609/rpcbind        
tcp        0      0 172.20.1.34:1521            0.0.0.0:*                   LISTEN      6155/tnslsnr        
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      5881/sshd           
tcp        0      0 172.20.1.34:61004           172.20.1.35:1521            ESTABLISHED 6569/ora_arc0_oracl
tcp        0      0 172.20.1.34:61006           172.20.1.35:1521            ESTABLISHED 6577/ora_nsa2_oracl
tcp        0      0 172.20.1.34:61007           172.20.1.35:1521            ESTABLISHED 6573/ora_arc2_oracl
tcp        0      0 172.20.1.34:61005           172.20.1.35:1521            ESTABLISHED 6575/ora_arc3_oracl
tcp        0    672 172.20.1.34:22              172.20.1.31:13120           ESTABLISHED 37508/sshd          
tcp        0      0 172.20.1.34:1521            172.20.1.34:59954           ESTABLISHED 6155/tnslsnr        
tcp        0      0 172.20.1.34:22              172.20.1.31:8990            ESTABLISHED 37197/sshd          
tcp        0      0 172.20.1.34:59954           172.20.1.34:1521            ESTABLISHED 6313/ora_pmon_oracl
tcp        0      0 ::1:631                     :::*                        LISTEN      5731/cupsd          
tcp        0      0 :::11614                    :::*                        LISTEN      6347/ora_d000_oracl
tcp        0      0 :::25449                    :::*                        LISTEN      5657/rpc.statd      
tcp        0      0 :::111                      :::*                        LISTEN      5609/rpcbind        
tcp        0      0 :::22                       :::*                        LISTEN      5881/sshd        
總結:用這個命令可以看出那個埠被佔用,開啟那些埠很好用命令  



來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/29065182/viewspace-1701153/,如需轉載,請註明出處,否則將追究法律責任。

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