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[9.002]Spoofed packets

Hi,
why does the UTM see devices on my second address on one external interface as spoofed packets?
I have a modem that requests ntp from the external interface additional address.


19:49:47 Spoofed packet UDP 10.99.99.250 : 3072 → 10.99.99.1 : 123 len=76 ttl=64 tos=0x00 srcmac=d8:5d:4c:f2:35:e4 dstmac=4c:72:b9:24:e0:21[FONT=monospace]
19:49:53 Spoofed packet UDP 10.99.99.250 : 3072 → 10.99.99.1 : 123 len=76 ttl=64 tos=0x00 srcmac=d8:5d:4c:f2:35:e4 dstmac=4c:72:b9:24:e0:21[/FONT]
Ian


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  • Hi, Ian,

    What subnet mask do you have on that interface?  Is 'Spoof protection' "normal" or "Strict?"

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
Reply
  • Hi, Ian,

    What subnet mask do you have on that interface?  Is 'Spoof protection' "normal" or "Strict?"

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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