iptables LOG 的一些特殊问题 - V2EX
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iptables LOG 的一些特殊问题

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  •   acbot May 11, 2023 1864 views
    This topic created in 1082 days ago, the information mentioned may be changed or developed.

    需求:两个 IP 组 gA gB 来源的要独立分别记录日志统计,除开这两个组的所有 IP 来源另外记录,实现规则如下

    1. iptables -t mangle -A -p tcp -m tcp --dport 443 -m set --match-set gA src -j LOG --log-prefix "group a access: "

    2. iptables -t mangle -A -p tcp -m tcp --dport 443 -m set --match-set gB src -j LOG --log-prefix "group b access: "

    3. iptables -t mangle -A -p tcp -m tcp --dport 443 -j LOG --log-prefix "other access: "

    现在的问题是 gA gB 的来源除了触发规则 1 或 2 还同时会触发规则 3 ,原因我看是说:LOG 是一个例外,不遵循匹配即中止的原则,虽然 ! match-set 可以这样取反但是 match-set 后面我没有看到过同时跟两条 IPset 的情况,那么这个问题有没有什么方便的办法,还是只能重新建立一个包含 gA gB 新 ipset 组来实现?

    Supplement 1    May 11, 2023
    通过再次搜索,找到了多个 -m set 介绍,其实直接在一个规则中写入多个就可以了,既:

    iptables -t mangle -A -p tcp -m tcp --dport 443 -m set ! --match-set gA src -m set ! --match-set gB src -j LOG --log-prefix "other access: "

    目前测试没有问题!
    2 replies    2023-05-11 14:56:25 +08:00
    24owls
        1
    24owls  
       May 11, 2023 via iPhone
    goto 就好了

    用 iptables 而不是 nft 是有什么特殊考虑吗
    acbot
        2
    acbot  
    OP
       May 11, 2023
    @24owls 延承问题!
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