> You totally misunderstood me. > All packets in both direction enter netfilter, and all packets leave > netfilter unless they are discarded or queued. Thanks for the example. It looks like my original intuition for what the "original" and "reply" directions meant was correct (even though I described it quite imprecisely). This makes me still unclear on how conntrack figures out that the original and reply packets are related. e.g. from the information in the packet entering netfilter in the reply direction, how can it determine that it is part of the same connection as the packet entering netfilter in the original direction. I'll try and figure this out and reply to this thread if I do. -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html