{"id":466,"date":"2018-10-01T00:20:42","date_gmt":"2018-09-30T15:20:42","guid":{"rendered":"http:\/\/www7390uo.sakura.ne.jp\/wordpress\/?p=466"},"modified":"2022-07-17T11:12:00","modified_gmt":"2022-07-17T02:12:00","slug":"ulogd%e3%81%a7%e4%bb%a5%e3%81%a3%e3%81%a6iptables%e3%81%ae%e3%83%ad%e3%82%b0%e3%82%92%e5%8f%96%e5%be%97%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/archives\/466","title":{"rendered":"ulogd\u3067\u4ee5\u3063\u3066iptables\u306e\u30ed\u30b0\u3092\u53d6\u5f97\u3059\u308b"},"content":{"rendered":"\n<p>OS: Ubuntu Server 18.04 LTS<br>ulogd2 2.0.5-5<\/p>\n\n\n\n<p>iptables\u306e\u30ed\u30b0\u3060\u3051\u3092\u3072\u3068\u3068\u3053\u308d\u306b\u96c6\u3081\u3066\u7ba1\u7406\u3059\u308b\u306a\u3089ulogd\u304c\u826f\u3055\u305d\u3046\u306a\u69d8\u5b50\u3067\u3042\u3063\u305f\u3002apt\u3067\u30b7\u30e5\u30c3\u3068\u5165\u308b\u306e\u3067\u305f\u3044\u3078\u3093\u697d\u3061\u3093\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">$ sudo apt install ulogd2<\/pre>\n\n\n\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3075\u3093\u3060\u3093\u306b\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u8aad\u307f\u8fbc\u307f\u3001XML\u3067\u51fa\u529b\u3057\u305f\u308a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u767b\u9332\u3059\u308b\u306a\u3069\u6709\u76ca\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u98a8\u60c5\u3067\u3042\u308b\u3051\u308c\u3069\u3082\u3061\u3087\u3063\u3068\u4f7f\u3044\u719f\u305b\u305d\u3046\u306b\u306a\u3044\u306e\u3067\u5fc5\u8981\u6700\u5c0f\u9650\u306e\u8a2d\u5b9a\u3060\u3051\u3092\u6b8b\u3059\u3002\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u8a2d\u5b9a\u306f\u307e\u305a\u6700\u521d\u306b <code>plugin=<\/code> \u306e\u9805\u76ee\u3092\u8a18\u8ff0\u3057\u3066\u305d\u306e\u3042\u3068\u5404\u3005\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u8a2d\u5b9a\u3092\u66f8\u304d\u8a18\u3059\u3068\u3044\u3046\u9806\u756a\u304c\u809d\u8981\u3067\u3042\u3063\u305f\u3002\u9806\u756a\u3092\u5b88\u3089\u306c\u3068\u6c7a\u3057\u3066ulogd\u304c\u8d77\u52d5\u3057\u306a\u3044\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">$ sudo cp -av \/etc\/ulogd.conf \/etc\/ulogd.conf.orig\n$ sudo vi \/etc\/ulogd.conf\n[global]\nlogfile=\"\/var\/log\/ulog\/ulogd.log\"\nloglevel=3\n\nplugin=\"\/usr\/lib\/x86_64-linux-gnu\/ulogd\/ulogd_inppkt_NFLOG.so\"\nplugin=\"\/usr\/lib\/x86_64-linux-gnu\/ulogd\/ulogd_filter_IFINDEX.so\"\nplugin=\"\/usr\/lib\/x86_64-linux-gnu\/ulogd\/ulogd_filter_IP2STR.so\"\nplugin=\"\/usr\/lib\/x86_64-linux-gnu\/ulogd\/ulogd_filter_PRINTPKT.so\"\nplugin=\"\/usr\/lib\/x86_64-linux-gnu\/ulogd\/ulogd_output_LOGEMU.so\"\nplugin=\"\/usr\/lib\/x86_64-linux-gnu\/ulogd\/ulogd_output_SYSLOG.so\"\nplugin=\"\/usr\/lib\/x86_64-linux-gnu\/ulogd\/ulogd_raw2packet_BASE.so\"\n\nstack=log1:NFLOG,base1:BASE,ifi1:IFINDEX,ip2str1:IP2STR,print1:PRINTPKT,emu1:LOGEMU \n\n[log1]\ngroup=0 \n\n[emu1]\nfile=\"\/var\/log\/iptables.log\"\nsync=1<\/pre>\n\n\n\n<p>\u8a2d\u5b9a\u3092\u7d42\u3048\u305f\u3089ulogd\u304c\u3044\u3056\u3053\u3056\u7121\u304f\u8d77\u52d5\u3059\u308b\u304b\u78ba\u8a8d\u3057\u3066\u304a\u304f\u3002\u8d77\u52d5\u3057\u306a\u3051\u308c\u3070 <code>journalctl -xe<\/code> \u30b3\u30de\u30f3\u30c9\u306e\u51fa\u529b\u3084\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3067\u6307\u5b9a\u3057\u305fulogd\u306e\u30ed\u30b0 <code>\/var\/log\/ulog\/ulogd.log<\/code> \u306e\u5185\u5bb9\u3092\u7cbe\u67fb\u3057\u3066\u8a2d\u5b9a\u3092\u4fee\u6b63\u3059\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">$ sudo systemctl start ulogd.service\n$ sudo systemctl status ulogd.service\n<strong class=\"green\">\u25cf<\/strong> ulogd2.service - Netfilter Userspace Logging Daemon\n(snip)\nSep 24 16:10:17 server systemd[1]: Started Netfilter Userspace Logging Daemon.<\/pre>\n\n\n\n<p>\u6ede\u308a\u306a\u304f\u8d77\u52d5\u3059\u308c\u3070\u3042\u3068\u306fiptables\u306e\u8a2d\u5b9a\u3092\u3059\u308b\u3002<code>--nflog-group<\/code>\u306fulogd.conf\u3067\u8a2d\u5b9a\u3057\u305fgroup\u306e\u756a\u53f7\u3092\u6307\u5b9a\u3057\u3001<code>--nflog-threshold<\/code>\u3067\u306fulogd\u304c\u51e6\u7406\u3092\u958b\u59cb\u3059\u308b\u307e\u3067\u306b\u30ad\u30e5\u30fc\u3078\u6e9c\u3081\u8fbc\u3080\u30d1\u30b1\u30c3\u30c8\u6570\u30922\u304b\u308950\u306e\u9593\u3067\u6307\u5b9a\u3059\u308b\u3002ulogd\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u306f<code>--nflog-qthreshold<\/code>\u3068\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u7b87\u6240\u3082\u3042\u308b\u3051\u308c\u3069\u3082iptables\u3078\u6301\u3061\u8fbc\u3080\u3068 <code>unknown option \"--nflog-qthreshold\"<\/code> \u3068\u6728\u3067\u9f3b\u3092\u62ec\u3063\u305f\u3088\u3046\u306a\u614b\u5ea6\u3067\u3042\u308b\u304b\u3089\u66f8\u304d\u640d\u3058\u3067\u306f\u306a\u3044\u304b\u3068\u304a\u3082\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">$ sudo iptables -A INPUT -j NFLOG --nflog-group 0 --nflog-prefix 'iptables:' --nflog-threshold 20\n$ tail -f \/var\/log\/iptables.log\nSep 24 16:21:08 ubuntu kernel: [346292.067933] iptables: IN=eth1 OUT= MAC=00:0c:29:61:28:2a:74:03:bd:7f:5b:83:08:00 SRC=91.189.92.20 DST=192.168.0.150 LEN=40 TOS=0x08 PREC=0x00 TTL=42 ID=40114 DF PROTO=TCP SPT=443 DPT=52736 WINDOW=0 RES=0x00 RST URGP=0\n(snip)<\/pre>\n\n\n\n<p>\u3055\u3089\u3063\u3074\u3093\u306eiptables\u3078\u3053\u306e\u8a2d\u5b9a\u3060\u3051\u653e\u308a\u8fbc\u3080\u3068\u81a8\u5927\u306a\u91cf\u306e\u30ed\u30b0\u3067\u6ea2\u308c\u8fd4\u3063\u3066\u4ed5\u821e\u3046\u304b\u3089\u3001\u6b63\u5e38\u306b\u52d5\u4f5c\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3067\u304d\u305f\u3089\u4e00\u65e6\u8a2d\u5b9a\u3092\u524a\u9664\u3057\u3066\u6539\u3081\u3066\u672c\u756a\u306e\u8a2d\u5b9a\u3092\u304a\u3053\u306a\u3046\u306e\u304c\u826f\u3055\u305d\u3046\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">$ sudo iptables -nvxL --line-numbers\nChain INPUT (policy ACCEPT 31 packets, 1936 bytes)\nnum      pkts      bytes target     prot opt in     out     source               destination\n1          31     1936 NFLOG      all  --  *      *       0.0.0.0\/0            0.0.0.0\/0            nflog-prefix  \"iptables:\" nflog-threshold 20\n$ sudo iptables -D INPUT 1<\/pre>\n\n\n\n<h3 class=\"link\">\u53c2\u8003:<\/h3>\n<ul>\n <li>\/usr\/share\/doc\/ulogd2\/ulogd.html<\/li>\n <li><a href=\"https:\/\/netfilter.org\/projects\/ulogd\/\">The netfilter.org &#8220;ulogd&#8221; project<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>OS: Ubuntu Server 18.04 LTSulogd2 2.0.5-5 iptables\u306e\u30ed\u30b0\u3060\u3051\u3092\u3072\u3068\u3068\u3053\u308d\u306b\u96c6\u3081\u3066\u7ba1\u7406\u3059\u308b\u306a\u3089ulogd\u304c\u826f\u3055\u305d\u3046\u306a\u69d8\u5b50\u3067\u3042\u3063\u305f\u3002apt\u3067\u30b7\u30e5\u30c3\u3068\u5165\u308b\u306e\u3067\u305f\u3044\u3078\u3093\u697d\u3061\u3093\u3067\u3042\u308b\u3002 $ sudo apt install ulogd2 \u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3075\u3093\u3060\u3093\u306b\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u8aad\u307f\u8fbc\u307f\u3001XML\u3067\u51fa\u529b\u3057\u305f\u308a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u767b\u9332\u3059\u308b\u306a\u3069\u6709\u76ca\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u98a8\u60c5\u3067\u3042\u308b\u3051 &#8230; <a title=\"ulogd\u3067\u4ee5\u3063\u3066iptables\u306e\u30ed\u30b0\u3092\u53d6\u5f97\u3059\u308b\" class=\"read-more\" href=\"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/archives\/466\" aria-label=\"ulogd\u3067\u4ee5\u3063\u3066iptables\u306e\u30ed\u30b0\u3092\u53d6\u5f97\u3059\u308b \u306b\u3064\u3044\u3066\u3055\u3089\u306b\u8aad\u3080\">\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[157],"tags":[254,259],"class_list":["post-466","post","type-post","status-publish","format-standard","hentry","category-linux","tag-iptables","tag-ulogd"],"views":3149,"_links":{"self":[{"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/posts\/466","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/comments?post=466"}],"version-history":[{"count":0,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/posts\/466\/revisions"}],"wp:attachment":[{"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/media?parent=466"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/categories?post=466"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/tags?post=466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}