Block or allow IGMP traffic (Home network, no router)


  1. NooNoo
    Posts : 4
    Windows 10 Home 64 bit
       New #1

    Block or allow IGMP traffic (Home network, no router)


    Windows 10 Home 22H2 OS Build 19045.4170

    I'm using Windows Firewall Control and I have an allow/block situation I'm not sure about:

    NAME: NT Kernel & System (System)

    DESCRIPTION: Outbound rule for NT Kernel & System (System)

    PROTOCOL: IGMP

    DIRECTION: OUTBOUND

    all local & remote ports and all local & remote IP addresses.

    I allowed this rule another time but the protocol was ICMPV4.

    *I'm running Windows 10 Home on my home desktop PC. No other PCs or devices (no router) are connected (other than a couple monitors & some USB related devices). Nobody else uses my internet, only my profile, and nobody connects anything.

    Should I allow this or block it?

    I just am confused about IGMP within a ethernet cable connected modem. I think it has something to do with switches?
    Last edited by NooNoo; 3 Weeks Ago at 17:22.
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  3. Samuria
    Posts : 8,116
    windows 10
       New #2

    Welcome to the forum this may answer your problem Just a moment...

    Like most things it can be used for bad but in most cases its needed for a lot of things
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  4. NooNoo
    Posts : 4
    Windows 10 Home 64 bit
    Thread Starter
       New #3

    Samuria said:
    Welcome to the forum this may answer your problem Just a moment...

    Like most things it can be used for bad but in most cases its needed for a lot of things
    Thanks, what about the PROTOCOL: IGMP?
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  6. Samuria
    Posts : 8,116
    windows 10
       New #4

    You say your running a modem that is very high risk and means your pc is live on the net so liable to be hacked if you have a router it's live on the net but it uses NAT so no pc is seen and can't be reached
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  7. NooNoo
    Posts : 4
    Windows 10 Home 64 bit
    Thread Starter
       New #5

    Reinstalled windows 10 home, all updated & has default firewall rules enabled. Any I should disable regarding ICMP or IGMP?
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