ISP blocking ports
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Thread: ISP blocking ports

  1. #1
    Junior Member
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    May 2003
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    ISP blocking ports

    I believe my ISP may have tried to block certain file sharing programs. To my understanding the only way this could be done would be to block the associated ports. How could I find which ports may be blocked without actually calling them?

  2. #2
    Forgotten Ghost RogueSpy's Avatar
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    "Never give in-never, never, never, in nothing great or small, large or petty, never give in to convictions of honor and good sense. Never yield to force; never yield to the apparently overwhelming might of the enemy!" - Winston Churchill

  3. #3
    Senior Member
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    Nov 2001
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    Use NetCat and a friend on another network!

    set NetCat to listen on the ports in question and run a bat file upon a connection being made.

    nc -l -p1214 -esuccess.bat

    success.bat
    --------------
    @echo .
    @echo .
    @echo .
    @echo success!
    @echo .
    @echo .
    @echo .
    pause
    --------------

    from the other computer have your friend run NetCat like this:

    nc -vv -n xxx.xx.x.xxx 1214

    where xxx = your IP address

    if s/he can make the connection this will be displayed:

    .
    .
    .
    success!
    .
    .
    .

    C:\>pause
    Press any key to continue . . .

    sent 2, rcvd 77: NOTSOCK

    if your friend dosn't get this message the port can't be reached
    Bukhari:V3B48N826 “The Prophet said, ‘Isn’t the witness of a woman equal to half of that of a man?’ The women said, ‘Yes.’ He said, ‘This is because of the deficiency of a woman’s mind.’”

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