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Thread: NetBIOS

  1. February 23rd, 2005, 12:28 PM #1
    IcSilk
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    Question NetBIOS

    I have disabled netBIOS by right clicking on my network setting -> properties ->TCP/IP->properties (yes, again)->advanced->WINS

    And I am just wondering if this was indeed a proper action to take for a bit more security.
    "In most gardens they make the beds too soft - so that the flowers are always asleep" - Tiger Lily
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  2. February 23rd, 2005, 12:36 PM #2
    thehorse13
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    Did you do this:

    1) Remove file and printer sharing from the LAN connection properties?
    2) Disable NetBIOS over TCP/IP from the area you mentioned?
    3) Drop to a command line and type netstat -an to see if any of the NetBIOS ports are listening? (139, 445)

    --th13
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  3. February 23rd, 2005, 07:18 PM #3
    !mitationRust
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    Re: NetBIOS

    http://img30.exs.cx/img30/9544/15im1.jpg

    I uninstall all of them during an install(XP) except for the Internet Protocol (TCP/IP), and then that one gets modified.

    That's what my LAC looks like, and you'll notice that my Install... , Uninstall and Properties tabs are not highlighted. A sure sign I'm on a limited account.
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  4. February 23rd, 2005, 07:56 PM #4
    sec_ware
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    Hi

    Closing listening ports is a good line of defense. If you have a stand-alone desktop
    with internet connection, I do not really see why not to close all of them (Are there
    drawbacks? I haven't experienced any yet.)

    For example, to close Port 445 completely (not tested on SP2), a little registry tweak
    is needed (make a note of what you change or export the key first.)
    Code:
    HKLM\System\CurrentControlSet\Services\NetBT\Parameters
    set TransportBindName from "\Device\" to a blank value. Reboot.

    For additional information, see a tutorial[1].

    Cheers.

    [1] http://www.antionline.com/showthread...hreadid=264811
    If the only tool you have is a hammer, you tend to see every problem as a nail.
    (Abraham Maslow, Psychologist, 1908-70)
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  5. February 23rd, 2005, 10:33 PM #5
    dayneman1
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    I just tried that code on my computer running the SP2 and it seems to have worked, with port 445 no longer showing when running netstat.
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