请教IP过滤 以及2层过滤的问题！

flyingpig

IP过滤还好理解点！
这个2层过滤啥也看不懂啊！
哪有IP过滤和2层过滤的详细资料啊？我找了半天也没找到。下面这都啥意思啊！如果没资料高手能否告知一二!
create pfraw subrule entry ruleid 15 subruleid 1 mask 0xFFFF offset 12 enable cmpt range 0x8863 0x8864
create pfraw subrule entry ruleid 16 subruleid 1 mask 0xFFFF offset 12 enable cmpt range 0x8863 0x8864
create pfraw subrule entry ruleid 17 subruleid 1 mask 0xFFFFFFFF start iph offset 16 enable cmpt range 0xE0000000 0xEFFFFFFF
create pfraw subrule entry ruleid 18 subruleid 1 mask 0xFFFFFFFF start iph offset 16 enable cmpt range 0xE0000000 0xEFFFFFFF
create pfraw subrule entry ruleid 19 subruleid 1 mask 0xFFFF offset 12 enable cmpt eq 0x8035
create pfraw subrule entry ruleid 20 subruleid 1 mask 0xFFFF offset 12 enable cmpt eq 0x8035
create pfraw subrule entry ruleid 21 subruleid 1 mask 0xFFFF offset 12 enable cmpt eq 0x809B
create pfraw subrule entry ruleid 22 subruleid 1 mask 0xFFFF offset 12 enable cmpt eq 0x809B
create pfraw subrule entry ruleid 23 subruleid 1 mask 0xFFFF offset 12 enable cmpt lteq 0x05DC
create pfraw subrule entry ruleid 23 subruleid 2 mask 0xFFFF offset 14 enable cmpt eq 0xF0F0
create pfraw subrule entry ruleid 24 subruleid 1 mask 0xFFFF offset 12 enable cmpt lteq 0x05DC
create pfraw subrule entry ruleid 24 subruleid 2 mask 0xFFFF offset 14 enable cmpt eq 0xF0F0
create pfraw subrule entry ruleid 25 subruleid 1 mask 0xFFFF offset 12 enable cmpt range 0x8137 0x8138
create pfraw subrule entry ruleid 26 subruleid 1 mask 0xFFFF offset 12 enable cmpt range 0x8137 0x8138
create pfraw subrule entry ruleid 27 subruleid 1 mask 0xFFFFFFFFFFFF offset 0 enable cmpt eq 0x0180C2000000
create pfraw subrule entry ruleid 28 subruleid 1 mask 0xFFFFFFFFFFFF offset 0 enable cmpt eq 0x0180C2000000
create pfraw subrule entry ruleid 29 subruleid 1 mask 0xFFFF offset 12 enable cmpt eq 0x0806
create pfraw subrule entry ruleid 30 subruleid 1 mask 0xFFFF offset 12 enable cmpt eq 0x0806
create pfraw subrule entry ruleid 31 subruleid 1 mask 0xFFFF offset 0 enable cmpt eq 0x3333
create pfraw subrule entry ruleid 32 subruleid 1 mask 0xFFFF offset 0 enable cmpt eq 0x3333
create pfraw subrule entry ruleid 33 subruleid 1 mask 0xFFFF offset 12 enable cmpt eq 0x8100
create pfraw subrule entry ruleid 34 subruleid 1 mask 0xFFFF offset 12 enable cmpt eq 0x8100
create pfraw subrule entry ruleid 35 subruleid 1 mask 0xFFFF offset 12 enable cmpt range 0x8863 0x8864
create pfraw subrule entry ruleid 36 subruleid 1 mask 0xFFFF offset 12 enable cmpt range 0x8863 0x8864
create pfraw subrule entry ruleid 37 subruleid 1 mask 0xFF offset 15 enable cmpt eq 0xA7

flyingpig

没人知道啊？