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[PTTG??]

In a fit of pointless invention, I've assembled a windows batch file that pings every ip4 address on the internet.

On my computer and network connection, it will take two years to complete, but I suppose that by running a hundred simultaneous copies with specified ranges will cut it down to a long week.

I can't think of any legitimate or illegitimate use for this thing. Have fun.

Spoiler: H4CK_7H3_PL4N37.bat (click to show/hide)

Code: [Select]

@echo off
SET /A ipa=1
SET /A ipb=0
SET /A ipc=0
SET /A ipd=0
time /T > results.txt
date /T >> results.txt
:START
ping %ipa%.%ipb%.%ipc%.%ipd% -n 1
IF %errorlevel%==0 (echo %ipa%.%ipb%.%ipc%.%ipd%>>results.txt)
IF %ipa% ==257 (GOTO END)
IF %ipb% ==256 (GOTO INCRA)
IF %ipc% ==256 (GOTO INCRB)
IF %ipd% ==256 (GOTO INCRC) ELSE (SET /A ipd+=1)
GOTO START

:INCRA
SET /A ipb=0
SET /A ipa+=1
echo %ipa%.%ipb%.%ipc%.%ipd% INCREMENT>>results.txt
echo Tick!>>results.txt
time /T >> results.txt
date /T >> results.txt
GOTO START
:INCRB
SET /A ipc=0
SET /A ipb+=1
echo %ipa%.%ipb%.%ipc%.%ipd% INCREMENT>>results.txt
time /T >> results.txt
date /T >> results.txt
GOTO START
:INCRC
SET /A ipd=0
SET /A ipc+=1
GOTO START
:END
time /T >> results.txt
date /T >> results.txt
ECHO 1337 C0MP1337
pause

[~Neri]

If you had a strong enough computer, you could crash the Internet with this.

[Vattic]

If you had a strong enough computer, you could crash the Internet with this.

Just remember to remove your own IP from the list.

[~Neri]

Exactly.

[Thief^]

If you had a strong enough computer, you could crash the Internet with this.

No, not really. One pc at most has the bandwidth to denial-of-service attack one other pc, on average*. Servers are normally stronger, which is why entire botnets are normally used in denial-of-service attacks.

EDIT: * actually not even that, given most people have asymmetric connections, they would have trouble even DoS'ing themself.