Windows 查看端口占用情况 & 80端口被占用处理方法

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摘录时间:
2023-11-05 11:19:07

一 . 用netstat指令查看是端口占用情况

查看所有端口的占用情况
C:\Users\Administrator>netstat -ano
活动连接

  协议  本地地址          外部地址        状态           PID
  TCP    0.0.0.0:21             0.0.0.0:0              LISTENING       2228
  TCP    0.0.0.0:80             0.0.0.0:0              LISTENING       4
  TCP    0.0.0.0:135            0.0.0.0:0              LISTENING       740
  TCP    0.0.0.0:389            0.0.0.0:0              LISTENING       3428
  TCP    0.0.0.0:445            0.0.0.0:0              LISTENING       4
  TCP    0.0.0.0:902            0.0.0.0:0              LISTENING       2496
  TCP    0.0.0.0:912            0.0.0.0:0              LISTENING       2496
  TCP    0.0.0.0:1689           0.0.0.0:0              LISTENING       3428
  TCP    0.0.0.0:3306           0.0.0.0:0              LISTENING       2612
  TCP    0.0.0.0:3389           0.0.0.0:0              LISTENING       856
  TCP    0.0.0.0:4444           0.0.0.0:0              LISTENING       3428
  TCP    0.0.0.0:5985           0.0.0.0:0              LISTENING       4
  TCP    0.0.0.0:8085           0.0.0.0:0              LISTENING       8044
  TCP    0.0.0.0:47001          0.0.0.0:0              LISTENING       4
  TCP    0.0.0.0:49664          0.0.0.0:0              LISTENING       476
  TCP    0.0.0.0:49665          0.0.0.0:0              LISTENING       1012
  TCP    0.0.0.0:49666          0.0.0.0:0              LISTENING       848
  TCP    0.0.0.0:49667          0.0.0.0:0              LISTENING       1688
  TCP    0.0.0.0:49668          0.0.0.0:0              LISTENING       2004
  TCP    0.0.0.0:49669          0.0.0.0:0              LISTENING       600
  TCP    0.0.0.0:49670          0.0.0.0:0              LISTENING       584
  TCP    0.0.0.0:54021          0.0.0.0:0              LISTENING       3428
  TCP    10.159.64.24:139       0.0.0.0:0              LISTENING       4
  TCP    10.159.64.24:3389      10.159.44.100:45306    ESTABLISHED     856
  TCP    10.159.64.24:54021     10.159.64.24:60248     ESTABLISHED     3428
  TCP    10.159.64.24:60248     10.159.64.24:54021     ESTABLISHED     3428
  TCP    127.0.0.1:7085         0.0.0.0:0              LISTENING       8044
  TCP    127.0.0.1:54008        127.0.0.1:54009        ESTABLISHED     3428
  TCP    127.0.0.1:54009        127.0.0.1:54008        ESTABLISHED     3428
  TCP    127.0.0.1:54011        127.0.0.1:54012        ESTABLISHED     3428
  TCP    127.0.0.1:54012        127.0.0.1:54011        ESTABLISHED     3428
  TCP    127.0.0.1:54013        127.0.0.1:54014        ESTABLISHED     3428
  TCP    127.0.0.1:54014        127.0.0.1:54013        ESTABLISHED     3428
  TCP    127.0.0.1:54016        127.0.0.1:54017        ESTABLISHED     3428
  TCP    127.0.0.1:54017        127.0.0.1:54016        ESTABLISHED     3428
  TCP    127.0.0.1:54018        127.0.0.1:54019        ESTABLISHED     3428
  TCP    127.0.0.1:54019        127.0.0.1:54018        ESTABLISHED     3428
  TCP    127.0.0.1:54025        127.0.0.1:54026        ESTABLISHED     8044
  TCP    127.0.0.1:54026        127.0.0.1:54025        ESTABLISHED     8044
  TCP    192.168.58.1:139       0.0.0.0:0              LISTENING       4
  TCP    192.168.195.1:139      0.0.0.0:0              LISTENING       4
  TCP    [::]:21                [::]:0                 LISTENING       2228
  TCP    [::]:80                [::]:0                 LISTENING       4
  TCP    [::]:135               [::]:0                 LISTENING       740
  TCP    [::]:389               [::]:0                 LISTENING       3428
  TCP    [::]:445               [::]:0                 LISTENING       4
  TCP    [::]:1689              [::]:0                 LISTENING       3428
  TCP    [::]:3306              [::]:0                 LISTENING       2612
  TCP    [::]:3389              [::]:0                 LISTENING       856
  TCP    [::]:4444              [::]:0                 LISTENING       3428
  TCP    [::]:5985              [::]:0                 LISTENING       4
  TCP    [::]:8085              [::]:0                 LISTENING       8044
  TCP    [::]:47001             [::]:0                 LISTENING       4
  TCP    [::]:49664             [::]:0                 LISTENING       476
  TCP    [::]:49665             [::]:0                 LISTENING       1012
  TCP    [::]:49666             [::]:0                 LISTENING       848
  TCP    [::]:49667             [::]:0                 LISTENING       1688
  TCP    [::]:49668             [::]:0                 LISTENING       2004
  TCP    [::]:49669             [::]:0                 LISTENING       600
  TCP    [::]:49670             [::]:0                 LISTENING       584
  TCP    [::]:54021             [::]:0                 LISTENING       3428
  UDP    0.0.0.0:123            *:*                                    452
  UDP    0.0.0.0:500            *:*                                    848
  UDP    0.0.0.0:3389           *:*                                    856
  UDP    0.0.0.0:4500           *:*                                    848
  UDP    0.0.0.0:5050           *:*                                    452
  UDP    0.0.0.0:5353           *:*                                    1120
  UDP    0.0.0.0:5355           *:*                                    1120
  UDP    10.159.64.24:137       *:*                                    4
  UDP    10.159.64.24:138       *:*                                    4
  UDP    10.159.64.24:1900      *:*                                    716
  UDP    10.159.64.24:52841     *:*                                    716
  UDP    127.0.0.1:1900         *:*                                    716
  UDP    127.0.0.1:52844        *:*                                    716
  UDP    192.168.58.1:137       *:*                                    4
  UDP    192.168.58.1:138       *:*                                    4
  UDP    192.168.58.1:1900      *:*                                    716
  UDP    192.168.58.1:52843     *:*                                    716
  UDP    192.168.195.1:137      *:*                                    4
  UDP    192.168.195.1:138      *:*                                    4
  UDP    192.168.195.1:1900     *:*                                    716
  UDP    192.168.195.1:52842    *:*                                    716
  UDP    [::]:123               *:*                                    452
  UDP    [::]:500               *:*                                    848
  UDP    [::]:3389              *:*                                    856
  UDP    [::]:4500              *:*                                    848
  UDP    [::]:5353              *:*                                    1120
  UDP    [::]:5355              *:*                                    1120
  UDP    [::1]:1900             *:*                                    716
  UDP    [::1]:52840            *:*                                    716
  UDP    [fe80::557e:e741:6082:9989%4]:546  *:*                                    1012
  UDP    [fe80::557e:e741:6082:9989%4]:1900  *:*                                    716
  UDP    [fe80::557e:e741:6082:9989%4]:52839  *:*                                    716
  UDP    [fe80::e04c:f5c2:4a:3289%3]:1900  *:*                                    716
  UDP    [fe80::e04c:f5c2:4a:3289%3]:52838  *:*                                    716

命令格式:netstat [options]
-a表示显示所有活动的TCP连接以及计算机监听的TCP和UDP端口。
-n表示只以数字形式显示所有活动的TCP连接的地址和端口号。
-o表示显示活动的TCP连接并包括每个连接的进程ID(PID)。

查看特定端口的占用情况(以80端口为例)
C:\Users\Administrator>netstat -aon|findstr 80
  TCP    0.0.0.0:80             0.0.0.0:0              LISTENING       4
  TCP    0.0.0.0:8085           0.0.0.0:0              LISTENING       8044
  TCP    127.0.0.1:7085         0.0.0.0:0              LISTENING       8044
  TCP    127.0.0.1:54025        127.0.0.1:54026        ESTABLISHED     8044
  TCP    127.0.0.1:54026        127.0.0.1:54025        ESTABLISHED     8044
  TCP    [::]:80                [::]:0                 LISTENING       4
  TCP    [::]:8085              [::]:0                 LISTENING       8044
  UDP    [fe80::557e:e741:6082:9989%4]:1900  *:*                                    716
  UDP    [fe80::557e:e741:6082:9989%4]:52839  *:*                                    716
  UDP    [fe80::e04c:f5c2:4a:3289%3]:1900  *:*                                    716
  UDP    [fe80::e04c:f5c2:4a:3289%3]:52838  *:*                                    716

在第2列可以找到,占用80端口的进程号为4。

二. 用tasklist指令查找进程号对应的名称

查找所有进程号对应的名称
C:\Users\Administrator>tasklist
映像名称                       PID 会话名              会话#       内存使用 
========================= ======== ================ =========== ============
System Idle Process              0 Services                   0          4 K
System                           4 Services                   0        140 K
smss.exe                       260 Services                   0      1,280 K
csrss.exe                      368 Services                   0      4,344 K
csrss.exe                      456 Console                    1      4,096 K
wininit.exe                    476 Services                   0      5,900 K
winlogon.exe                   512 Console                    1      8,456 K
services.exe                   584 Services                   0     13,848 K
lsass.exe                      600 Services                   0     16,572 K
svchost.exe                    676 Services                   0     26,880 K
svchost.exe                    740 Services                   0     24,716 K
svchost.exe                    848 Services                   0    140,064 K
svchost.exe                    856 Services                   0     50,948 K
svchost.exe                    912 Services                   0     32,872 K
dwm.exe                        932 Console                    1     29,708 K
LogonUI.exe                    940 Console                    1     41,764 K
svchost.exe                   1012 Services                   0     30,416 K
svchost.exe                    452 Services                   0     25,796 K
WUDFHost.exe                  1032 Services                   0      8,284 K
svchost.exe                   1052 Services                   0     18,176 K
svchost.exe                   1120 Services                   0     23,008 K
svchost.exe                   1128 Services                   0      7,252 K
svchost.exe                   2004 Services                   0      7,288 K
spoolsv.exe                   1688 Services                   0     16,612 K
svchost.exe                   2144 Services                   0     25,436 K
svchost.exe                   2152 Services                   0     10,592 K
svchost.exe                   2184 Services                   0      8,488 K
svchost.exe                   2192 Services                   0     19,312 K
svchost.exe                   2228 Services                   0     11,568 K
vmnat.exe                     2252 Services                   0      6,956 K
svchost.exe                   2260 Services                   0     11,440 K
MsMpEng.exe                   2352 Services                   0    154,116 K
vmnetdhcp.exe                 2380 Services                   0     11,216 K
vmware-usbarbitrator64.ex     2444 Services                   0     10,000 K
vmware-authd.exe              2496 Services                   0     13,440 K
mysqld.exe                    2612 Services                   0     26,688 K
csrss.exe                     3864 RDP-Tcp#6                  2     12,792 K
winlogon.exe                  3924 RDP-Tcp#6                  2      8,400 K
dwm.exe                       3988 RDP-Tcp#6                  2    128,360 K
rdpclip.exe                   1220 RDP-Tcp#6                  2     20,332 K
RuntimeBroker.exe             3612 RDP-Tcp#6                  2     34,632 K
sihost.exe                    3764 RDP-Tcp#6                  2     22,676 K
svchost.exe                   3080 RDP-Tcp#6                  2     19,868 K
taskhostw.exe                 1752 RDP-Tcp#6                  2     20,804 K
explorer.exe                  4024 RDP-Tcp#6                  2    523,136 K
ChsIME.exe                    1936 RDP-Tcp#6                  2      9,064 K
ShellExperienceHost.exe       4308 RDP-Tcp#6                  2     83,412 K
SearchUI.exe                  4392 RDP-Tcp#6                  2     47,184 K
ServerManager.exe             4700 RDP-Tcp#6                  2     99,764 K
vmware-tray.exe               4936 RDP-Tcp#6                  2     12,512 K
msdtc.exe                     4792 Services                   0      9,692 K
plmdeployer_prd_simple.ex     5008 RDP-Tcp#6                  2    103,076 K
plmdeployer_prd_simple.ex     3776 RDP-Tcp#6                  2     92,332 K
notepad.exe                   1184 RDP-Tcp#6                  2     14,124 K
dllhost.exe                   3264 RDP-Tcp#6                  2      9,140 K
plmdeployer_prd_simple.ex     2112 RDP-Tcp#6                  2     93,160 K
svchost.exe                    716 Services                   0      6,892 K
mmc.exe                        376 RDP-Tcp#6                  2     11,144 K
mmc.exe                        800 RDP-Tcp#6                  2     17,328 K
taskhostw.exe                 4352 RDP-Tcp#6                  2     19,148 K
notepad.exe                    724 RDP-Tcp#6                  2     14,080 K
wordpad.exe                   7576 RDP-Tcp#6                  2     36,588 K
java.exe                      3428 RDP-Tcp#6                  2    372,520 K
cmd.exe                       8088 RDP-Tcp#6                  2      3,212 K
conhost.exe                   3520 RDP-Tcp#6                  2     15,196 K
java.exe                      8044 RDP-Tcp#6                  2    561,224 K
wordpad.exe                   5724 RDP-Tcp#6                  2     33,536 K
notepad.exe                   5688 RDP-Tcp#6                  2     15,676 K
git-bash.exe                  4932 RDP-Tcp#6                  2      5,164 K
mintty.exe                    5348 RDP-Tcp#6                  2     19,216 K
conhost.exe                   8632 RDP-Tcp#6                  2     11,716 K
bash.exe                      9108 RDP-Tcp#6                  2      9,644 K
git-bash.exe                  5148 RDP-Tcp#6                  2      5,104 K
mintty.exe                    9084 RDP-Tcp#6                  2     18,784 K
conhost.exe                   8488 RDP-Tcp#6                  2     11,724 K
bash.exe                      4408 RDP-Tcp#6                  2      9,588 K
git-bash.exe                   756 RDP-Tcp#6                  2      5,124 K
mintty.exe                    2284 RDP-Tcp#6                  2     18,220 K
conhost.exe                    980 RDP-Tcp#6                  2     11,676 K
bash.exe                      5892 RDP-Tcp#6                  2      9,580 K
notepad.exe                   8272 RDP-Tcp#6                  2     14,852 K
notepad.exe                   3464 RDP-Tcp#6                  2     14,436 K
cmd.exe                       3636 RDP-Tcp#6                  2      2,900 K
conhost.exe                   8756 RDP-Tcp#6                  2     14,972 K
notepad.exe                   9036 RDP-Tcp#6                  2     15,964 K
mmc.exe                       7244 RDP-Tcp#6                  2     13,036 K
ApplicationFrameHost.exe      5996 RDP-Tcp#6                  2     24,204 K
SystemSettings.exe            6804 RDP-Tcp#6                  2     57,788 K
MpCmdRun.exe                  5948 Services                   0      8,248 K
svchost.exe                   5572 Services                   0      6,228 K
tasklist.exe                  6904 RDP-Tcp#6                  2      8,080 K
WmiPrvSE.exe                  3084 Services                   0      8,688 K
查找所有特定进程号对应的名称(以进程4为例)
C:\Users\Administrator>tasklist|findstr 4
System Idle Process              0 Services                   0          4 K
System                           4 Services                   0        140 K
csrss.exe                      368 Services                   0      4,340 K
csrss.exe                      456 Console                    1      4,096 K
wininit.exe                    476 Services                   0      5,900 K
winlogon.exe                   512 Console                    1      8,456 K
services.exe                   584 Services                   0     13,848 K
svchost.exe                    740 Services                   0     24,716 K
svchost.exe                    848 Services                   0    138,932 K
svchost.exe                    856 Services                   0     51,140 K
LogonUI.exe                    940 Console                    1     41,764 K
svchost.exe                   1012 Services                   0     30,456 K
svchost.exe                    452 Services                   0     25,796 K
WUDFHost.exe                  1032 Services                   0      8,284 K
svchost.exe                   2004 Services                   0      7,288 K
svchost.exe                   2144 Services                   0     25,432 K
svchost.exe                   2184 Services                   0      8,488 K
svchost.exe                   2192 Services                   0     19,304 K
svchost.exe                   2260 Services                   0     11,440 K
MsMpEng.exe                   2352 Services                   0    154,988 K
vmware-usbarbitrator64.ex     2444 Services                   0     10,000 K
vmware-authd.exe              2496 Services                   0     13,440 K
csrss.exe                     3864 RDP-Tcp#6                  2     12,840 K
winlogon.exe                  3924 RDP-Tcp#6                  2      8,400 K
dwm.exe                       3988 RDP-Tcp#6                  2    133,044 K
RuntimeBroker.exe             3612 RDP-Tcp#6                  2     34,632 K
sihost.exe                    3764 RDP-Tcp#6                  2     22,676 K
explorer.exe                  4024 RDP-Tcp#6                  2    522,228 K
ChsIME.exe                    1936 RDP-Tcp#6                  2      9,064 K
ShellExperienceHost.exe       4308 RDP-Tcp#6                  2     83,412 K
SearchUI.exe                  4392 RDP-Tcp#6                  2     47,184 K
ServerManager.exe             4700 RDP-Tcp#6                  2     99,764 K
vmware-tray.exe               4936 RDP-Tcp#6                  2     12,512 K
msdtc.exe                     4792 Services                   0      9,692 K
notepad.exe                   1184 RDP-Tcp#6                  2     14,124 K
dllhost.exe                   3264 RDP-Tcp#6                  2      9,140 K
mmc.exe                        800 RDP-Tcp#6                  2     17,524 K
taskhostw.exe                 4352 RDP-Tcp#6                  2     19,148 K
notepad.exe                    724 RDP-Tcp#6                  2     14,080 K
java.exe                      3428 RDP-Tcp#6                  2    372,520 K
java.exe                      8044 RDP-Tcp#6                  2    561,224 K
wordpad.exe                   5724 RDP-Tcp#6                  2     33,536 K
git-bash.exe                  4932 RDP-Tcp#6                  2      5,164 K
mintty.exe                    5348 RDP-Tcp#6                  2     19,216 K
bash.exe                      9108 RDP-Tcp#6                  2      9,644 K
git-bash.exe                  5148 RDP-Tcp#6                  2      5,104 K
mintty.exe                    9084 RDP-Tcp#6                  2     18,784 K
conhost.exe                   8488 RDP-Tcp#6                  2     11,724 K
bash.exe                      4408 RDP-Tcp#6                  2      9,588 K
git-bash.exe                   756 RDP-Tcp#6                  2      5,124 K
mintty.exe                    2284 RDP-Tcp#6                  2     18,220 K
notepad.exe                   8272 RDP-Tcp#6                  2     14,852 K
notepad.exe                   3464 RDP-Tcp#6                  2     14,436 K
conhost.exe                   8756 RDP-Tcp#6                  2     14,972 K
notepad.exe                   9036 RDP-Tcp#6                  2     15,964 K
mmc.exe                       7244 RDP-Tcp#6                  2     13,036 K
ApplicationFrameHost.exe      5996 RDP-Tcp#6                  2     24,204 K
SystemSettings.exe            6804 RDP-Tcp#6                  2     57,788 K
MpCmdRun.exe                  5948 Services                   0      8,160 K
tasklist.exe                  4476 RDP-Tcp#6                  2      8,092 K

从第2列找到进程号为4的,发现是System。

也可以在任务管理器查看进程对应的服务,发现pid=4的进程,其对应的进程描述是NT kernel & system。
在这里插入图片描述

三. 遇到了“80端口被System占用”,该如何解决呢?

这是什么进程?
系统的80端口是被W3SVC(万维网发布服务,World Wide Web Publishing Service)占用了,它是系统提供http服务的依赖项。哪些服务使用了这个端口呢?

  • World Wide Web:发布服务
  • SSDP Discovery:局域网共享所需服务
  • Print Spooler:打印机交互服务

怎么处理呢?
如果允许,可以直接不使用这个服务,这个进程显式停止是无法停止的,只有在cmd.exe里使用net stop http来停止。
(1) 关闭服务

C:\Users\Administrator>net stop http
下面的服务依赖于 HTTP Service 服务。
停止 HTTP Service 服务也会停止这些服务。
   World Wide Web 发布服务
   SSDP Discovery
   Print Spooler
你想继续此操作吗? (Y/N) [N]: y
World Wide Web 发布服务 服务正在停止.
World Wide Web 发布服务 服务已成功停止。
SSDP Discovery 服务正在停止.
SSDP Discovery 服务已成功停止。
Print Spooler 服务正在停止.
Print Spooler 服务已成功停止。
HTTP Service 服务已成功停止。

或显示如下:
在这里插入图片描述
(2) 禁用服务

C:\Users\Administrator>sc config http start= disabled
[SC] ChangeServiceConfig 成功

此时查看可能发现80端口尚未释放,此时需重启服务器。
重启后,80单口端口就释放了。


补充知识:
重新启动http服务,执行如下命令:

C:\Users\Administrator>sc config http start= demand
C:\Users\Administrator>net start http

参考文章:

Win10 | 查找占用特定端口的进程

遇到了“80端口被占用”的问题,该如何解决?

NT Kernel & System 占用80端口

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