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'Any -> Any -> Any' and we still see "Default Drop"???

I never tried this before, opening everything and logging traffic then looking at the packet filter log.  How can ANYTHING get default dropped?


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  • This is a security matter ... Any -> Any -> Any would disable security at all. So this turns to a drop all rule.
  • No, most everything gets through
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • many of the drops are NETBIOS LS (TCP/UDP 135)
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • Packets hitting the Network or Broadcast addresses don't get covered by a ANY rule.
    You'd need another rule to Allow them (although there's not point unless you're bridging) or Drop them with or without logging.

    Normally I drop internal broadcasts without logging.

    Barry
  • These were coming from the outside and hitting external IPs.

    Ohhh, wait a minute.  Those were to Additional Addresses on ports NOT relayed by my DNAT rule; of course they were dropped - where was the poor firewall gonna send those messages anyway?

    Pay no attention to the man behind the curtain!*

    Cheers - Bob
    *A "Wizard of Oz" reference.
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA