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1ijack/disable_multicast.cmd

Last active October 19, 2023 19:04
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  1. 1ijack revised this gist Sep 4, 2018. 1 changed file with 5 additions and 2 deletions.
    7 changes: 5 additions & 2 deletions disable_multicast.cmd
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    Original file line number Diff line number Diff line change
    @@ -2,13 +2,15 @@
    :: Original source -- https://computerstepbystep.com/turn-off-multicast-name-resolution.html#CMD
    @goto:argParser

    rem - JaCkd Note: this seems backwards, but per site instructions: Enable = 0; Disable = 1
    rem ~ Posted on [unknown] at url [https://computerstepbystep.com/turn-off-multicast-name-resolution.html#PowerShellScript]
    rem *Description*: Local Link Multicast Name Resolution (LLMNR) is a secondary name resolution protocol. Queries are sent over the Local Link, a single subnet, from a client machine using Multicast to which another client on the same link, which also has LLMNR enabled, can respond. LLMNR provides name resolution in scenarios in which conventional DNS name resolution is not possible.
    rem If you enable this policy setting, Multicast name resolution or LLMNR, will be turned off for the machine across all available but un-configured network adapters.
    rem If you disable this policy setting, Multicast name resolution or LLMNR, will be turned on for the machine across all available but un-configured network adapters.
    rem If you do not configure this policy setting, Multicast name resolution or LLMNR, will be turned on for the machine across all available but un-configured network adapters by default.
    rem Supported on: At least Windows Vista.


    :enableCmd
    REG add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient" /v EnableMulticast /t REG_DWORD /d 0 /f
    @goto:eof
    @@ -27,5 +29,6 @@ rem Supported on: At least Windows Vista.
    @for %%A in ( enable; yes; true ) do @if /i "%#pA%" equ "%%A" call :enableCmd
    @for %%A in ( disable; no; false ) do @if /i "%#pA%" equ "%%A" call :disableCmd
    @for %%A in ( unset; notconfigured; default; restore) do @if /i "%#pA%" equ "%%A" call :notConfiguredCmd
    @set "#pA="
    @goto:eof
    @shift /1 &@set "#pA=%~1"
    @if not defined #pA @goto:eof
    @goto:argParser
  2. 1ijack revised this gist Sep 4, 2018. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion disable_multicast.cmd
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    @@ -1,4 +1,4 @@
    :: by JaCk (script struture/functions only) | Release 09/04/2018 | url https://tbd.tld/slug/id | disable_multicast.cmd -- change DNSClient/LLMNR behavior [enable/disable/restoreDefault] using windows registry. Restart maybe required for the settings to take effect.
    :: by JaCk (script struture/functions only) | Release 09/04/2018 | url https://gist.github.com/1ijack/bd5ed0da9bcaebb2a14e3698cefe7a49 | disable_multicast.cmd -- change DNSClient/LLMNR behavior [enable/disable/restoreDefault] using windows registry. Restart maybe required for the settings to take effect.
    :: Original source -- https://computerstepbystep.com/turn-off-multicast-name-resolution.html#CMD
    @goto:argParser

  3. 1ijack created this gist Sep 4, 2018.
    31 changes: 31 additions & 0 deletions disable_multicast.cmd
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    @@ -0,0 +1,31 @@
    :: by JaCk (script struture/functions only) | Release 09/04/2018 | url https://tbd.tld/slug/id | disable_multicast.cmd -- change DNSClient/LLMNR behavior [enable/disable/restoreDefault] using windows registry. Restart maybe required for the settings to take effect.
    :: Original source -- https://computerstepbystep.com/turn-off-multicast-name-resolution.html#CMD
    @goto:argParser

    rem ~ Posted on [unknown] at url [https://computerstepbystep.com/turn-off-multicast-name-resolution.html#PowerShellScript]
    rem *Description*: Local Link Multicast Name Resolution (LLMNR) is a secondary name resolution protocol. Queries are sent over the Local Link, a single subnet, from a client machine using Multicast to which another client on the same link, which also has LLMNR enabled, can respond. LLMNR provides name resolution in scenarios in which conventional DNS name resolution is not possible.
    rem If you enable this policy setting, Multicast name resolution or LLMNR, will be turned off for the machine across all available but un-configured network adapters.
    rem If you disable this policy setting, Multicast name resolution or LLMNR, will be turned on for the machine across all available but un-configured network adapters.
    rem If you do not configure this policy setting, Multicast name resolution or LLMNR, will be turned on for the machine across all available but un-configured network adapters by default.
    rem Supported on: At least Windows Vista.

    :enableCmd
    REG add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient" /v EnableMulticast /t REG_DWORD /d 0 /f
    @goto:eof

    :disableCmd
    REG add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient" /v EnableMulticast /t REG_DWORD /d 1 /f
    @goto:eof

    :notConfiguredCmd
    REG DELETE "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient" /v EnableMulticast /f
    @goto:eof

    :argParser
    @set "#pA=%~1"
    @if not defined #pA @call :disableCmd
    @for %%A in ( enable; yes; true ) do @if /i "%#pA%" equ "%%A" call :enableCmd
    @for %%A in ( disable; no; false ) do @if /i "%#pA%" equ "%%A" call :disableCmd
    @for %%A in ( unset; notconfigured; default; restore) do @if /i "%#pA%" equ "%%A" call :notConfiguredCmd
    @set "#pA="
    @goto:eof