查看本地监听端口和远程端口

最新推荐文章于 2025-06-13 20:35:08 发布

转载最新推荐文章于 2025-06-13 20:35:08 发布 · 1.9k 阅读

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原文链接：https://my.oschina.net/u/269082/blog/897251

文章标签：

#python #java #c/c++

本文介绍如何使用lsof命令查看本地计算机上正在监听的端口，并演示了telnet命令检查远程服务器端口是否开放的过程。示例中包括了不同应用程序监听的不同端口和服务。

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查看本地监听端口

E5450:~/opengrok_env$ lsof -i
COMMAND    PID      USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
gvfsd-smb 2020 zhixinlyl   11u IPv4   26164      0t0 TCP 30.96.91.172:46732->30.96.88.255:netbios-ssn (ESTABLISHED)
adb       2172 zhixinlyl    6u IPv4   31071      0t0 TCP localhost:5037 (LISTEN)
firefox   2406 zhixinlyl   52u IPv4   91892      0t0 TCP 30.96.91.172:44132->140.205.32.75:https (ESTABLISHED)
firefox   2406 zhixinlyl   54u IPv4   78492      0t0 UDP *:48462
firefox   2406 zhixinlyl   55u IPv6   78494      0t0 UDP *:43172
firefox   2406 zhixinlyl   61u IPv4 1097190      0t0 TCP 30.96.91.172:46474->119.147.70.227:https (ESTABLISHED)
firefox   2406 zhixinlyl   82u IPv4 1029131      0t0 TCP 30.96.91.172:45680->42.156.235.98:https (ESTABLISHED)
firefox   2406 zhixinlyl   92u IPv4   94886      0t0 TCP 30.96.91.172:54268->101.227.160.102:https (ESTABLISHED)
java      4976 zhixinlyl   48u IPv6 101851      0t0 TCP *:http-alt (LISTEN)
java      4976 zhixinlyl   53u IPv6 101855      0t0 TCP *:8009 (LISTEN)
java      4976 zhixinlyl   69u IPv6 100684      0t0 TCP localhost:2424 (LISTEN)
java      4976 zhixinlyl   75u IPv6 102723      0t0 TCP localhost:8005 (LISTEN)

查看远程监听端口

E5450:~/opengrok_env$ telnet www.baidu.com 80
Trying 14.215.177.38...
Connected to www.a.shifen.com.
Escape character is '^]'.

E5450:~/opengrok_env$ telnet www.baidu.com 8080
Trying 14.215.177.37...

转载于:https://my.oschina.net/u/269082/blog/897251