China DOS Union

The original code is as follows. I know there are a lot of things for detecting the local area network now, but I just like to P, and it feels different to use my own things. Hehe (mainly because I can modify and improve it in time):
@echo off&color 9f&setlocal EnableDelayedExpansion title LAN Quick Detection Tool echo. echo. echo ************************** LAN Quick Detection Tool ************************** echo 　 *----------------------------------------------------------------------* echo 　 * This tool integrates functions of detecting the local machine's network card, detecting the gateway, and finding all online computers in the LAN. In particular, when there are active ARP trojans in the LAN, it can quickly find out the problematic computers. To prevent errors with dual network cards, this tool also adds the function of users entering IPs by themselves. Please create text documents (.txt) named gateway and use in the folder where the tool is located before using this tool. Enter the IP and MAC address of the LAN gateway in gateway in sequence. Note that there should be no space between the IP and MAC. Enter the IP addresses of all computers in the LAN and the departments or people using them in use in sequence. Enter one group per line and note to add a ":" after the IP. This is to determine the end character of the string when finding the IP (this will not find IPs ending with "*#" and "*$#" when finding IPs ending with "#", such as 1 21 181).　　　　　　　　　　　　 　 * echo *----------------------------------------------------------------------* echo 　 *　　Note: Please temporarily close all applications when detecting the LAN. Many black windows will pop up during the detection, which are running the ping test commands. Just wait for one minute, and all the pop-up windows will close by themselves. * echo 　 *----------------------------------------------------------------------* echo 　 ************************************************************************ pause cls&mode con lines=15 set u=■■■■■■■■■■■■■■■■■■■■■■■■■ set a=0 for /l %%i in (1,1,20) do call :show %%i cls echo.&echo.&echo.&echo. echo The program is initializing... echo ┌─────────────────────────┐ echo %u%100%% echo └─────────────────────────┘ ping /n 3 127.1 >nul if exist l*.txt del l*.txt if exist mac*.txt del mac*.txt if exist jiance.txt del jiance.txt ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ rem Ping test for the local machine's network card cls echo.&echo.&echo.&echo. set/p lan= Please enter the LAN segment (the input format is 192.168.1., press Enter directly to default to 192.168.1.): if "%lan%"=="" goto p1 goto p2 :p1 set lan=192.168.1. :p2 cls echo.&echo.&echo.&echo. set/p ip= Please enter the last digit of the local machine's LAN IP address (press Enter directly to default to 255): if "%ip%"=="" goto p3 ping %lan%%ip% -n 2 >nul if errorlevel 2 goto wrong1 if errorlevel 1 goto wrong1 goto show1 :p3 ping %lan%255 -n 2 >nul if errorlevel 2 goto wrong1 if errorlevel 1 goto wrong1 :show1 cls echo.&echo.&echo.&echo. echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ echo 　 ****************************** Network card is unobstructed!******************************* echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ ping -n 3 127.1 >nul ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ rem Ping test for the gateway cls&arp -d 2>nul echo.&echo.&echo.&echo. set/p pi= Please enter the last digit of the LAN gateway IP address (press Enter directly to default to 1): if "%pi%"=="" goto p4 ping %lan%%pi% -n 2 >nul if errorlevel 2 goto wrong2 if errorlevel 1 goto wrong2 goto select1 :p4 ping %lan%1 -n 2 >nul if errorlevel 2 goto wrong2 if errorlevel 1 goto wrong2 goto select1 ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ rem Ping test for the LAN to find all online computers :ping echo. >lb.txt echo. >>lb.txt echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ >>lb.txt echo 　 ************************ The following computers in the LAN are online! ************************ >>lb.txt echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ >>lb.txt for /l %%i in (0,1,255) do start ping -n 1 %lan%%%i for /f "skip=3 tokens=*" %%k in ('arp -a') do echo %%k >>mac.txt for /f "tokens=1" %%j in ('findstr /c:"dynamic" mac.txt') do ( findstr /c:"%%j:" use.txt >>lb.txt ) cls&mode con lines=30&type lb.txt | more pause ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ rem Detect if there is ARP spoofing in the LAN cls&fc gateway.txt jiance.txt if errorlevel 2 goto find if errorlevel 1 goto find goto show2 ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ rem Find the computers infected with the trojan :find cls echo. >ld.txt echo. >>ld.txt echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ >>ld.txt echo 　 ********************* The above computers in the LAN are infected with ARP trojans!********************* >>ld.txt echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ >>ld.txt for /f "skip=3 tokens=2" %%i in (la.txt) do findstr /c:"%%i" mac.txt >>lc.txt for /f "tokens=1" %%i in (lc.txt) do findstr /c:"%%i:" use.txt >>ld.txt type ld.txt | more pause ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ :end cls&mode con lines=15 echo.&echo.&echo.&echo. echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ echo ************************* Detection completed, press any key to exit!************************** echo ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ pause >nul del l*.txt jiance.txt mac*.txt&goto :eof :show2 cls&mode con lines=15 echo.&echo.&echo.&echo. echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ echo 　 ***************** After detection, there is no ARP spoofing in the LAN, and the network is secure! ****************** echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ pause goto end :select1 cls echo.&echo.&echo.&echo. echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ echo 　 ***************************** Gateway is unobstructed!******************************** echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ ping -n 2 127.1 >nul&arp -a >la.txt cls&for /f "skip=3 tokens=1,2" %%i in ('arp -a') do echo %%i%%j >>jiance.txt :select2 cls echo.&echo.&echo.&echo. set/p select2= Do you want to ping test the LAN? (1. Ping test　2. Do not ping test) if "%select2%"=="1" goto ping if "%select2%"=="2" goto end cls echo.&echo.&echo.&echo. echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ echo 　 ***************************** Incorrect input!******************************** echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ ping -n 2 127.1 >nul&goto select2 :wrong1 cls echo.&echo.&echo.&echo. echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ echo 　 ************************** Network card is not unobstructed, unable to detect!************************* echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ ping -n 3 127.1 >nul&goto :eof :wrong2 cls echo.&echo.&echo.&echo. echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ echo 　 ************************** Network is not unobstructed, unable to detect!************************* echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ ping -n 3 127.1 >nul&goto :eof :show cls set /a a+=4 echo.&echo.&echo.&echo. echo The program is initializing... echo ┌─────────────────────────┐ echo !u:~,%1!%a%%%&ping /n 1 127.1 >nul echo └─────────────────────────┘ goto :eof

[ Last edited by zw19750516 on 2008-3-16 at 02:57 PM ]

Hehe, no one cares, I'll cheer myself up.

Thanks for sharing.
Learned...

Skills for handling special characters in the set command, the LZ used it well, heh.

Thanks, boss. Let's all work hard together!

Oh, so many windows. I almost got scared by it, heh!

Everyone, please pay attention to closing other applications during the detection. The characteristic of this P is fast, but it also causes a shortcoming: occupying extremely high memory within a short time (about one minute). It is recommended that those with poor computer configurations do not use it.

I have also checked for incorrect codes, detected various situations, and made aesthetic improvements. Everyone can rest assured to test and use it.

In order to improve together for everyone, I have to be a bit selfish and bump it myself, hehe.

Thanks for sharing. Learned...

```batch
@echo off&color 9f&setlocal EnableDelayedExpansion
title LAN Quick Detection Tool
echo.
echo.
echo ************************** LAN Quick Detection Tool **************************
echo 　 *----------------------------------------------------------------------*
echo 　 * This tool integrates functions of detecting the local area network card, detecting the gateway, and finding all online computers in the LAN. In particular, when there are active ARP trojans in the LAN, it can quickly find out the problematic computers. To prevent errors with dual network cards, this tool also adds the function of user inputting IP. Before using this tool, please create text documents (.txt) named gateway and use in the folder where the tool is located. In gateway, input the IP and MAC address of the LAN gateway in sequence. Note that there should be no space between IP and MAC. In use, input the IP addresses of all computers in the LAN and the department or person in use in sequence. Input one group per line and note that add a ":" after the IP. This is to determine the end character of the string when finding the IP (so that the IP ending with "#" will not be found when finding the IP ending with "*#" and "*#*", such as 1 21 181). 　 *
echo *----------------------------------------------------------------------*
echo 　 *　　Note: Please temporarily close all applications when detecting the LAN. Many black windows will pop up during the detection, which is running the ping test command. Just wait for one minute, and all pop-up windows will close automatically. *
echo 　 *----------------------------------------------------------------------*
echo 　 ************************************************************************
pause
cls&mode con lines=15
set u=■■■■■■■■■■■■■■■■■■■■■■■■■
set a=0
for /l %%i in (1,1,20) do call :show %%i
cls
echo.&echo.&echo.&echo.
echo Program is initializing...
echo ┌─────────────────────────┐
echo %u%100%%
echo └─────────────────────────┘
ping /n 3 127.1 >nul
if exist l*.txt del l*.txt
if exist mac*.txt del mac*.txt
if exist jiance.txt del jiance.txt
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
rem Ping test for the local area network card
cls
set lan=192.168.1.
echo.&echo.&echo.&echo.
set/p lan= Please enter the LAN segment (input format is 192.168.1., press Enter directly to default to 192.168.1.):
cls
set ip=255
echo.&echo.&echo.&echo.
set/p ip= Please enter the last digit of the local LAN IP address (press Enter directly to default to 255):
ping %lan%%ip% -n 2 >nul
if errorlevel 1 goto wrong1
cls
echo.&echo.&echo.&echo.
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
echo 　 ****************************** Network card is unobstructed!*******************************
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
ping -n 3 127.1 >nul
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
rem Ping test for the gateway
cls&arp -d 2>nul
set pi=1
echo.&echo.&echo.&echo.
set/p pi= Please enter the last digit of the LAN gateway IP address (press Enter directly to default to 1):
ping %lan%%pi% -n 2 >nul
if errorlevel 1 goto wrong2
goto select1
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
rem Ping test for the LAN to find all online computers
:ping
echo. >lb.txt
echo. >>lb.txt
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ >>lb.txt
echo 　 ************************ The following computers in the LAN are online! ************************ >>lb.txt
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ >>lb.txt
for /l %%i in (0,1,255) do start ping -n 1 %lan%%%i
for /f "skip=3 tokens=*" %%k in ('arp -a') do echo %%k >>mac.txt
for /f "tokens=1" %%j in ('findstr /c:"dynamic" mac.txt') do (
findstr /c:"%%j:" use.txt >>lb.txt
)
cls&mode con lines=30&type lb.txt | more
pause
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
rem Detect whether there is ARP spoofing in the LAN
cls&fc gateway.txt jiance.txt
if errorlevel 2 goto find
if errorlevel 1 goto find
goto show2
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
rem Find the computer infected with the trojan
:find
cls
echo. >ld.txt
echo. >>ld.txt
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ >>ld.txt
echo 　 ********************* The above computers in the LAN are infected with ARP trojans!********************* >>ld.txt
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ >>ld.txt

for /f "skip=3 tokens=2" %%i in (la.txt) do findstr /c:"%%i" mac.txt >>lc.txt
for /f "tokens=1" %%i in (lc.txt) do findstr /c:"%%i:" use.txt >>ld.txt
type ld.txt | more
pause
＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿
:end
cls&mode con lines=15
echo.&echo.&echo.&echo.
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
echo ************************* Detection completed, press any key to exit!**************************
echo ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
pause >nul
del l*.txt jiance.txt mac*.txt&goto :eof
:show2
cls&mode con lines=15
echo.&echo.&echo.&echo.
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
echo 　 ***************** After detection, there is no ARP spoofing in the LAN, and the network is secure! ******************
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
pause
goto end
:select1
cls
echo.&echo.&echo.&echo.
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
echo 　 ***************************** Gateway is unobstructed!********************************
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
ping -n 2 127.1 >nul&arp -a >la.txt
cls&for /f "skip=3 tokens=1,2" %%i in ('arp -a') do echo %%i%%j >>jiance.txt
:select2
cls
echo.&echo.&echo.&echo.
set/p select2= Do you want to ping test the LAN? (1. Ping test　2. Do not ping test)
if "%select2%"=="1" goto ping
if "%select2%"=="2" goto end
cls
echo.&echo.&echo.&echo.
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
echo 　 ***************************** Incorrect input!********************************
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
ping -n 2 127.1 >nul&goto select2
:wrong1
cls
echo.&echo.&echo.&echo.
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
echo 　 ************************** Network card is not connected, unable to detect!*************************
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
ping -n 3 127.1 >nul&goto :eof
:wrong2
cls
echo.&echo.&echo.&echo.
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
echo 　 ************************** Network is not connected, unable to detect!*************************
echo 　 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
ping -n 3 127.1 >nul&goto :eof
:show
cls
set /a a+=4
echo.&echo.&echo.&echo.
echo Program is initializing...
echo ┌─────────────────────────┐
echo !u:~,%1!%a%%%&ping /n 1 127.1 >nul
echo └─────────────────────────┘
goto :eof
```

Great, learning from you~

Bro, not bad. I can only give you one point. Don't mind it being little.