显示linux操作系统当前打开的端口(port)

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#linux #当前 #打开的端口 #打开

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本文介绍如何使用lsof-i命令查看Linux系统中所有开放的端口及其对应的进程。通过该命令，可以详细了解到每个端口上的监听状态和连接情况，对于系统管理和故障排查具有重要意义。

参考自：

https://access.redhat.com/solutions/1987

How do I list the open ports on my system and the process that owns them?

使用lsof -i命令即可：

[root@abc ~]# lsof -i
COMMAND     PID      USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
rpcbind    1644       rpc    6u  IPv4  11565      0t0  UDP *:sunrpc 
rpcbind    1644       rpc    7u  IPv4  11567      0t0  UDP *:971 
rpcbind    1644       rpc    8u  IPv4  11568      0t0  TCP *:sunrpc (LISTEN)
rpcbind    1644       rpc    9u  IPv6  11570      0t0  UDP *:sunrpc 
rpcbind    1644       rpc   10u  IPv6  11572      0t0  UDP *:971 
rpcbind    1644       rpc   11u  IPv6  11573      0t0  TCP *:sunrpc (LISTEN)
rpc.statd  1701   rpcuser    7u  IPv4  11839      0t0  UDP *:48976 
rpc.statd  1701   rpcuser    8u  IPv4  11843      0t0  TCP *:63124 (LISTEN)
rpc.statd  1701   rpcuser    9u  IPv6  11847      0t0  UDP *:48394 
rpc.statd  1701   rpcuser   10u  IPv6  11851      0t0  TCP *:57162 (LISTEN)
rpc.statd  1701   rpcuser   59u  IPv4  11834      0t0  UDP localhost:659 
cupsd      1746      root    6u  IPv6  12130      0t0  TCP localhost:ipp (LISTEN)
cupsd      1746      root    7u  IPv4  12131      0t0  TCP localhost:ipp (LISTEN)
cupsd      1746      root    9u  IPv4  12134      0t0  UDP *:ipp 
sshd       1937      root    3u  IPv4  12699      0t0  TCP *:ssh (LISTEN)
sshd       1937      root    4u  IPv6  12701      0t0  TCP *:ssh (LISTEN)
master     2016      root   12u  IPv4  12911      0t0  TCP localhost:smtp (LISTEN)
master     2016      root   13u  IPv6  12913      0t0  TCP localhost:smtp (LISTEN)
postgres   2072 highgo432    3u  IPv4  13145      0t0  TCP *:postgres (LISTEN)
postgres   2072 highgo432    4u  IPv6  13146      0t0  TCP *:postgres (LISTEN)
postgres   2072 highgo432    8u  IPv6  13161      0t0  UDP localhost:59722->localhost:59722 
postgres   2074 highgo432    8u  IPv6  13161      0t0  UDP localhost:59722->localhost:59722 
postgres   2075 highgo432    8u  IPv6  13161      0t0  UDP localhost:59722->localhost:59722 
postgres   2076 highgo432    8u  IPv6  13161      0t0  UDP localhost:59722->localhost:59722 
postgres   2077 highgo432    8u  IPv6  13161      0t0  UDP localhost:59722->localhost:59722 
postgres   2078 highgo432    8u  IPv6  13161      0t0  UDP localhost:59722->localhost:59722 
postgres   4877 highgo475    3u  IPv4  18837      0t0  TCP *:5899 (LISTEN)
postgres   4877 highgo475    4u  IPv6  18838      0t0  TCP *:5899 (LISTEN)
postgres   4877 highgo475    8u  IPv6  18853      0t0  UDP localhost:60657->localhost:60657 
postgres   4879 highgo475    8u  IPv6  18853      0t0  UDP localhost:60657->localhost:60657 
postgres   4880 highgo475    8u  IPv6  18853      0t0  UDP localhost:60657->localhost:60657 
postgres   4881 highgo475    8u  IPv6  18853      0t0  UDP localhost:60657->localhost:60657 
postgres   4882 highgo475    8u  IPv6  18853      0t0  UDP localhost:60657->localhost:60657 
postgres   4883 highgo475    8u  IPv6  18853      0t0  UDP localhost:60657->localhost:60657 
sshd      14619      root    3r  IPv4  46824      0t0  TCP abc:ssh->192.168.80.1:64586 (ESTABLISHED)
[root@abc ~]#