NAT and Block Incoming IP rule

Discussion in 'Linux Networking' started by Geoff Lane, Jan 10, 2004.

  1. Geoff Lane

    Geoff Lane Guest

    Just practicing with settings; I've got a small network (WiFi) of
    three computers operating behind a NAT router.

    My adsl router (Vigor 2600) is quite user configurable and has a
    number of options in IP rules as well as 'keep state'.

    If operating behind NAT is there any point in having a 'block all'
    incoming rule? On my previous Linux dial up I had block all then allow
    related and established connections; was only just getting to
    understand it but the hardware router appears to take care of it all.

    I have tried setting a 'block all' incoming IP rule and all my
    connections appear to still work OK so either I have not done
    something correctly or the NAT is allowing connected or associated
    inbound traffic; which is obviously what I want anyway.

    Geoff Lane
    Geoff Lane, Jan 10, 2004
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