{"id":14684,"date":"2024-02-04T14:10:03","date_gmt":"2024-02-04T10:40:03","guid":{"rendered":"https:\/\/www.itpiran.net\/blog\/?p=14684"},"modified":"2024-02-04T14:10:03","modified_gmt":"2024-02-04T10:40:03","slug":"how-to-list-and-delete-iptables-firewall-rules","status":"publish","type":"post","link":"https:\/\/www.itpiran.net\/blog\/ja\/tutorials\/how-to-list-and-delete-iptables-firewall-rules\/","title":{"rendered":"Iptables\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30eb\u30fc\u30eb\u306e\u4e00\u89a7\u8868\u793a\u3068\u524a\u9664\u65b9\u6cd5"},"content":{"rendered":"<h2 id=\"%d9%85%d9%82%d8%af%d9%85%d9%87\">\u5c0e\u5165<\/h2>\n<p>Iptables\u306f\u3001\u307b\u3068\u3093\u3069\u306eLinux\u30b7\u30b9\u30c6\u30e0\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u304a\u3044\u3066\u57fa\u672c\u7684\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u3059\u3002\u591a\u304f\u306eiptables\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30eb\u30fc\u30eb\u306e\u4f5c\u6210\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u7ba1\u7406\u306e\u5225\u306e\u5074\u9762\u3001\u3064\u307e\u308a\u30eb\u30fc\u30eb\u306e\u4e00\u89a7\u8868\u793a\u3068\u524a\u9664\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p>\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001\u6b21\u306e iptables \u30bf\u30b9\u30af\u3092\u5b9f\u884c\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30eb\u30fc\u30eb\u3092\u5217\u6319\u3059\u308b<\/li>\n<li>\u30d1\u30b1\u30c3\u30c8\u3068\u30d0\u30a4\u30c8\u30ab\u30a6\u30f3\u30bf\u3092\u30af\u30ea\u30a2\u3059\u308b<\/li>\n<li>\u30eb\u30fc\u30eb\u3092\u524a\u9664\u3059\u308b<\/li>\n<li>\u30c1\u30a7\u30fc\u30f3\u306e\u30d5\u30e9\u30c3\u30b7\u30e5\uff08\u30c1\u30a7\u30fc\u30f3\u5185\u306e\u3059\u3079\u3066\u306e\u30eb\u30fc\u30eb\u306e\u524a\u9664\uff09<\/li>\n<li>\u3059\u3079\u3066\u306e\u30c1\u30a7\u30fc\u30f3\u3068\u30c6\u30fc\u30d6\u30eb\u3092\u30af\u30ea\u30a2\u3057\u3001\u3059\u3079\u3066\u306e\u30c1\u30a7\u30fc\u30f3\u3092\u524a\u9664\u3057\u3001\u3059\u3079\u3066\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u53d7\u3051\u5165\u308c\u307e\u3059<\/li>\n<\/ul>\n<h5 id=\"%d9%be%db%8c%d8%b4-%d9%86%db%8c%d8%a7%d8%b2%d9%87%d8%a7\">\u524d\u63d0\u6761\u4ef6<\/h5>\n<p>\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001iptables\u30b3\u30de\u30f3\u30c9\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305fLinux\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u304csudo\u6a29\u9650\u3092\u6301\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u524d\u63d0\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u521d\u671f\u8a2d\u5b9a\u306b\u3064\u3044\u3066\u3054\u4e0d\u660e\u306a\u70b9\u304c\u3042\u308b\u5834\u5408\u306f\u3001Ubuntu 20.04\u3067\u306e\u521d\u671f\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u30ac\u30a4\u30c9\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002.<\/p>\n<h2 id=\"%d9%81%d9%87%d8%b1%d8%b3%d8%aa-%d8%a8%d9%86%d8%af%db%8c-%d9%82%d9%88%d8%a7%d9%86%db%8c%d9%86-%d8%a8%d8%b1-%d8%a7%d8%b3%d8%a7%d8%b3-%d9%85%d8%b4%d8%ae%d8%b5%d8%a7%d8%aa\">\u4ed5\u69d8\u5225\u306e\u30ea\u30b9\u30c8\u30eb\u30fc\u30eb<\/h2>\n<p>\u307e\u305a\u3001\u30eb\u30fc\u30eb\u306e\u4e00\u89a7\u8868\u793a\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u30a2\u30af\u30c6\u30a3\u30d6\u306aiptables\u30eb\u30fc\u30eb\u3092\u8868\u793a\u3059\u308b\u65b9\u6cd5\u306f2\u3064\u3042\u308a\u307e\u3059\u3002\u8868\u5f62\u5f0f\u3068\u30eb\u30fc\u30eb\u4ed5\u69d8\u306e\u4e00\u89a7\u3067\u3059\u3002\u3069\u3061\u3089\u306e\u65b9\u6cd5\u3067\u3082\u3001\u5f62\u5f0f\u306f\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u307b\u307c\u540c\u3058\u60c5\u5831\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>\u4ed5\u69d8\u5225\u306b\u30a2\u30af\u30c6\u30a3\u30d6\u306a iptables \u30eb\u30fc\u30eb\u3092\u3059\u3079\u3066\u4e00\u89a7\u8868\u793a\u3059\u308b\u306b\u306f\u3001-S \u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6307\u5b9a\u3057\u3066 iptables \u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -S<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>Output\r\n-P INPUT DROP\r\n-P FORWARD DROP\r\n-P OUTPUT ACCEPT\r\n-N ICMP\r\n-N TCP\r\n-N UDP\r\n-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT\r\n-A INPUT -i lo -j ACCEPT\r\n-A INPUT -m conntrack --ctstate INVALID -j DROP\r\n-A INPUT -p udp -m conntrack --ctstate NEW -j UDP\r\n-A INPUT -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m conntrack --ctstate NEW -j TCP\r\n-A INPUT -p icmp -m conntrack --ctstate NEW -j ICMP\r\n-A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable\r\n-A INPUT -p tcp -j REJECT --reject-with tcp-reset\r\n-A INPUT -j REJECT --reject-with icmp-proto-unreachable\r\n-A TCP -p tcp -m tcp --dport 22 -j ACCEPT\r\n...<\/code><\/pre>\n<\/div>\n<p>\u3054\u89a7\u306e\u3068\u304a\u308a\u3001\u51fa\u529b\u306f\u3001\u524d\u8ff0\u306eiptables\u30b3\u30de\u30f3\u30c9\u3092\u9664\u3051\u3070\u3001\u4f5c\u6210\u306b\u4f7f\u7528\u3057\u305f\u30b3\u30de\u30f3\u30c9\u3068\u5168\u304f\u540c\u3058\u3067\u3059\u3002iptables-persistent\u307e\u305f\u306fiptables save\u3092\u4f7f\u7528\u3057\u305f\u3053\u3068\u304c\u3042\u308b\u5834\u5408\u3001\u3053\u308c\u3082iptables\u30eb\u30fc\u30eb\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u540c\u69d8\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h2 id=\"%d9%81%d9%87%d8%b1%d8%b3%d8%aa-%da%a9%d8%b1%d8%af%d9%86-%db%8c%da%a9-%d8%b2%d9%86%d8%ac%db%8c%d8%b1%d9%87-%d8%ae%d8%a7%d8%b5\">\u7279\u5b9a\u306e\u30c1\u30a7\u30fc\u30f3\u3092\u30ea\u30b9\u30c8\u3059\u308b<\/h2>\n<p>\u51fa\u529b\u3092\u7279\u5b9a\u306e\u30c1\u30a7\u30fc\u30f3\uff08INPUT\u3001OUTPUT\u3001TCP \u306a\u3069\uff09\u306b\u5236\u9650\u3059\u308b\u5834\u5408\u306f\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u76f4\u5f8c\u306b\u30c1\u30a7\u30fc\u30f3\u540d\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002 <code>-S<\/code> \u305f\u3068\u3048\u3070\u3001TCP \u30c1\u30a7\u30fc\u30f3\u5185\u306e\u3059\u3079\u3066\u306e\u30eb\u30fc\u30eb\u3092\u8868\u793a\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -S TCP<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>Output\r\n-N TCP\r\n-A TCP -p tcp -m tcp --dport 22 -j ACCEPT<\/code><\/pre>\n<\/div>\n<p>\u3053\u3053\u3067\u3001\u30a2\u30af\u30c6\u30a3\u30d6\u306a iptables \u30eb\u30fc\u30eb\u3092\u30eb\u30fc\u30eb \u30c6\u30fc\u30d6\u30eb\u3068\u3057\u3066\u8868\u793a\u3059\u308b\u5225\u306e\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002.<\/p>\n<h2 id=\"%d9%81%d9%87%d8%b1%d8%b3%d8%aa-%da%a9%d8%b1%d8%af%d9%86-%d9%82%d9%88%d8%a7%d9%86%db%8c%d9%86-%d8%a8%d9%87-%d8%b5%d9%88%d8%b1%d8%aa-%d8%ac%d8%af%d8%a7%d9%88%d9%84\">\u8868\u306b\u30eb\u30fc\u30eb\u3092\u30ea\u30b9\u30c8\u3059\u308b<\/h2>\n<p>iptables\u30eb\u30fc\u30eb\u3092\u30c6\u30fc\u30d6\u30eb\u5f62\u5f0f\u3067\u4e00\u89a7\u8868\u793a\u3059\u308b\u3068\u3001\u7570\u306a\u308b\u30eb\u30fc\u30eb\u540c\u58eb\u3092\u6bd4\u8f03\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u30a2\u30af\u30c6\u30a3\u30d6\u306aiptables\u30eb\u30fc\u30eb\u3092\u3059\u3079\u3066\u30c6\u30fc\u30d6\u30eb\u5f62\u5f0f\u3067\u51fa\u529b\u3059\u308b\u306b\u306f\u3001iptables\u30b3\u30de\u30f3\u30c9\u306b-L\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4ed8\u3051\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -L<\/code><\/pre>\n<\/div>\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u30c1\u30a7\u30fc\u30f3\u3054\u3068\u306b\u30bd\u30fc\u30c8\u3055\u308c\u305f\u73fe\u5728\u306e\u3059\u3079\u3066\u306e\u30eb\u30fc\u30eb\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>\u51fa\u529b\u3092\u7279\u5b9a\u306e\u30c1\u30a7\u30fc\u30f3 (INPUT\u3001OUTPUT\u3001TCP \u306a\u3069) \u306b\u5236\u9650\u3059\u308b\u5834\u5408\u306f\u3001-L \u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u76f4\u5f8c\u306b\u30c1\u30a7\u30fc\u30f3\u540d\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p>\u5165\u529b\u30c1\u30a7\u30fc\u30f3\u306e\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -L INPUT<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>Output\r\nChain INPUT (policy DROP)\r\ntarget prot opt source destination\r\nACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED\r\nACCEPT all -- anywhere anywhere\r\nDROP all -- anywhere anywhere ctstate INVALID\r\nUDP udp -- anywhere anywhere ctstate NEW\r\nTCP tcp -- anywhere anywhere tcp flags:FIN,SYN,RST,ACK\/SYN ctstate NEW\r\nICMP icmp -- anywhere anywhere ctstate NEW\r\nREJECT udp -- anywhere anywhere reject-with icmp-port-unreachable\r\nREJECT tcp -- anywhere anywhere reject-with tcp-reset\r\nREJECT all -- anywhere anywhere reject-with icmp-proto-unreachable<\/code><\/pre>\n<\/div>\n<p>\u51fa\u529b\u306e\u6700\u521d\u306e\u884c\u306b\u306f\u3001\u30c1\u30a7\u30fc\u30f3\u306e\u540d\u524d\uff08\u3053\u306e\u5834\u5408\u306fINPUT\uff09\u3068\u3001\u305d\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30dd\u30ea\u30b7\u30fc\uff08DROP\uff09\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u6b21\u306e\u884c\u306b\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5404\u5217\u306e\u30d8\u30c3\u30c0\u30fc\u3068\u3001\u30c1\u30a7\u30fc\u30f3\u30eb\u30fc\u30eb\u304c\u7d9a\u304d\u307e\u3059\u3002\u5404\u30d8\u30c3\u30c0\u30fc\u304c\u4f55\u3092\u8868\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>\u30bf\u30fc\u30b2\u30c3\u30c8: \u30d1\u30b1\u30c3\u30c8\u304c\u30eb\u30fc\u30eb\u306b\u4e00\u81f4\u3057\u305f\u5834\u5408\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u306f\u30d1\u30b1\u30c3\u30c8\u306e\u51e6\u7406\u65b9\u6cd5\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30d1\u30b1\u30c3\u30c8\u306f\u53d7\u3051\u5165\u308c\u3001\u7834\u68c4\u3001\u30ed\u30b0\u306b\u8a18\u9332\u3001\u3042\u308b\u3044\u306f\u5225\u306e\u30c1\u30a7\u30fc\u30f3\u306b\u9001\u3089\u308c\u3066\u3001\u3088\u308a\u591a\u304f\u306e\u30eb\u30fc\u30eb\u3068\u6bd4\u8f03\u3055\u308c\u307e\u3059\u3002.<\/li>\n<li>prot: tcp\u3001udp\u3001icmp\u3001all \u306a\u3069\u306e\u30d7\u30ed\u30c8\u30b3\u30eb<\/li>\n<li>opt: \u3042\u307e\u308a\u4f7f\u7528\u3055\u308c\u306a\u3044\u304c\u3001\u3053\u306e\u5217\u306b\u306fIP\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u8868\u793a\u3055\u308c\u308b<\/li>\n<li>\u30bd\u30fc\u30b9: \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u307e\u305f\u306f\u30b5\u30d6\u30cd\u30c3\u30c8\u3001\u3042\u308b\u3044\u306f<\/li>\n<li>\u5b9b\u5148: \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u5b9b\u5148IP\u30a2\u30c9\u30ec\u30b9\u307e\u305f\u306f\u30b5\u30d6\u30cd\u30c3\u30c8\u3001\u3042\u308b\u3044\u306f\u4efb\u610f\u306e\u5834\u6240<\/li>\n<\/ul>\n<p>\u6700\u5f8c\u306e\u5217\uff08\u30e9\u30d9\u30eb\u306a\u3057\uff09\u306b\u306f\u3001\u30eb\u30fc\u30eb\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u524d\u306e\u5217\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u306a\u3044\u30eb\u30fc\u30eb\u306e\u4efb\u610f\u306e\u90e8\u5206\u3067\u3059\u3002\u9001\u4fe1\u5143\u30dd\u30fc\u30c8\u3068\u5b9b\u5148\u30dd\u30fc\u30c8\u304b\u3089\u30d1\u30b1\u30c3\u30c8\u63a5\u7d9a\u306e\u72b6\u614b\u307e\u3067\u3001\u3042\u3089\u3086\u308b\u60c5\u5831\u304c\u542b\u307e\u308c\u307e\u3059\u3002.<\/p>\n<h2 id=\"%d9%86%d9%85%d8%a7%db%8c%d8%b4-%d8%aa%d8%b9%d8%af%d8%a7%d8%af-%d8%a8%d8%b3%d8%aa%d9%87-%d9%87%d8%a7-%d9%88-%d8%a7%d9%86%d8%af%d8%a7%d8%b2%d9%87-%da%a9%d9%84\">\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u6570\u3068\u5408\u8a08\u30b5\u30a4\u30ba\u3092\u8868\u793a\u3059\u308b<\/h2>\n<p>iptables\u30eb\u30fc\u30eb\u3092\u4e00\u89a7\u8868\u793a\u3059\u308b\u969b\u306b\u3001\u5404\u30eb\u30fc\u30eb\u306b\u4e00\u81f4\u3059\u308b\u30d1\u30b1\u30c3\u30c8\u306e\u6570\u3068\u30d1\u30b1\u30c3\u30c8\u306e\u5408\u8a08\u30b5\u30a4\u30ba\uff08\u30d0\u30a4\u30c8\u5358\u4f4d\uff09\u3092\u8868\u793a\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u3069\u306e\u30eb\u30fc\u30eb\u304c\u3069\u306e\u30d1\u30b1\u30c3\u30c8\u306b\u4e00\u81f4\u3059\u308b\u304b\u3092\u5927\u307e\u304b\u306b\u628a\u63e1\u3057\u305f\u3044\u5834\u5408\u306b\u4fbf\u5229\u3067\u3059\u3002\u3053\u308c\u3092\u884c\u3046\u306b\u306f\u3001-L\u30aa\u30d7\u30b7\u30e7\u30f3\u3068-v\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f75\u7528\u3057\u307e\u3059\u3002.<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001-v \u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6307\u5b9a\u3057\u305f INPUT \u30c1\u30a7\u30fc\u30f3\u3092\u3082\u3046\u4e00\u5ea6\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -L INPUT -v<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>Output\r\nChain INPUT (policy DROP 0 packets, 0 bytes)\r\npkts bytes target prot opt in out source destination\r\n284K 42M ACCEPT all -- any any anywhere anywhere ctstate RELATED,ESTABLISHED\r\n0 0 ACCEPT all -- lo any anywhere anywhere\r\n0 0 DROP all -- any any anywhere anywhere ctstate INVALID\r\n396 63275 UDP udp -- any any anywhere anywhere ctstate NEW\r\n17067 1005K TCP tcp -- any any anywhere anywhere tcp flags:FIN,SYN,RST,ACK\/SYN ctstate NEW\r\n2410 154K ICMP icmp -- any any anywhere anywhere ctstate NEW\r\n396 63275 REJECT udp -- any any anywhere anywhere reject-with icmp-port-unreachable\r\n2916 179K REJECT all -- any any anywhere anywhere reject-with icmp-proto-unreachable\r\n0 0 ACCEPT tcp -- any any anywhere anywhere tcp dpt:ssh ctstate NEW,ESTABLISHED<\/code><\/pre>\n<\/div>\n<p>\u30ea\u30b9\u30c8\u306b2\u3064\u306e\u5217\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002 <code>\u30d1\u30b1\u30c3\u30c8<\/code> \u305d\u3057\u3066 <code>\u30d0\u30a4\u30c8<\/code> \u305d\u3046\u3067\u3059\u3002.<\/p>\n<p>\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb \u30eb\u30fc\u30eb\u3092\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067\u4e00\u89a7\u8868\u793a\u3059\u308b\u65b9\u6cd5\u3092\u7406\u89e3\u3057\u305f\u306e\u3067\u3001\u30d1\u30b1\u30c3\u30c8 \u30ab\u30a6\u30f3\u30bf\u30fc\u3068\u30d0\u30a4\u30c8 \u30ab\u30a6\u30f3\u30bf\u30fc\u3092\u30ea\u30bb\u30c3\u30c8\u3059\u308b\u65b9\u6cd5\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002.<\/p>\n<h2 id=\"%d8%aa%d9%86%d8%b8%db%8c%d9%85-%d9%85%d8%ac%d8%af%d8%af-%d8%aa%d8%b9%d8%af%d8%a7%d8%af-%d8%a8%d8%b3%d8%aa%d9%87-%d9%87%d8%a7-%d9%88-%d8%a7%d9%86%d8%af%d8%a7%d8%b2%d9%87-%da%a9%d9%84\">\u30d1\u30b1\u30c3\u30c8\u6570\u3068\u5408\u8a08\u30b5\u30a4\u30ba\u3092\u30ea\u30bb\u30c3\u30c8\u3059\u308b<\/h2>\n<p>\u30eb\u30fc\u30eb\u306e\u30d1\u30b1\u30c3\u30c8\u30ab\u30a6\u30f3\u30bf\u3068\u30d0\u30a4\u30c8\u30ab\u30a6\u30f3\u30bf\u3092\u30af\u30ea\u30a2\uff08\u30bc\u30ed\u306b\u3059\u308b\uff09\u3057\u305f\u3044\u5834\u5408\u306f\u3001-Z \u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u3089\u306e\u30ab\u30a6\u30f3\u30bf\u306f\u518d\u8d77\u52d5\u6642\u306b\u3082\u30ea\u30bb\u30c3\u30c8\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u65e2\u5b58\u306e\u30eb\u30fc\u30eb\u306b\u4e00\u81f4\u3059\u308b\u65b0\u3057\u3044\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u53d7\u4fe1\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u5834\u5408\u306b\u4fbf\u5229\u3067\u3059\u3002.<\/p>\n<p>\u3059\u3079\u3066\u306e\u30c1\u30a7\u30fc\u30f3\u3068\u30eb\u30fc\u30eb\u306e\u30ab\u30a6\u30f3\u30bf\u30fc\u3092\u30af\u30ea\u30a2\u3059\u308b\u306b\u306f\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 <code>-Z<\/code> \u5358\u72ec\u3067\u4f7f\u7528\u3059\u308b\u5834\u5408:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -Z<\/code><\/pre>\n<\/div>\n<p>\u7279\u5b9a\u306e\u30c1\u30a7\u30fc\u30f3\u5185\u306e\u3059\u3079\u3066\u306e\u30eb\u30fc\u30eb\u306e\u30ab\u30a6\u30f3\u30bf\u30fc\u3092\u30af\u30ea\u30a2\u3059\u308b\u306b\u306f\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 <code>-Z<\/code> \u30c1\u30a7\u30fc\u30f3\u3092\u6307\u5b9a\u3057\u3066\u4f7f\u7528\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30c1\u30a7\u30fc\u30f3\u30ab\u30a6\u30f3\u30bf\u3092\u30af\u30ea\u30a2\u3059\u308b\u306b\u306f <code>\u5165\u529b<\/code> \u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -Z INPUT<\/code><\/pre>\n<\/div>\n<p>\u7279\u5b9a\u306e\u30eb\u30fc\u30eb\u306e\u30ab\u30a6\u30f3\u30bf\u3092\u30af\u30ea\u30a2\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u30c1\u30a7\u30fc\u30f3\u540d\u3068\u30eb\u30fc\u30eb\u756a\u53f7\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30c1\u30a7\u30fc\u30f3\u306e\u6700\u521d\u306e\u30eb\u30fc\u30eb\u306e\u30ab\u30a6\u30f3\u30bf\u3092\u30af\u30ea\u30a2\u3059\u308b\u306b\u306f\u3001 <code>\u5165\u529b<\/code>\u3053\u308c\u3092\u5b9f\u884c\u3057\u307e\u3059:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -Z INPUT 1<\/code><\/pre>\n<\/div>\n<p>Iptables \u306e\u30d1\u30b1\u30c3\u30c8 \u30ab\u30a6\u30f3\u30bf\u30fc\u3068\u30d0\u30a4\u30c8 \u30ab\u30a6\u30f3\u30bf\u30fc\u3092\u30ea\u30bb\u30c3\u30c8\u3059\u308b\u65b9\u6cd5\u304c\u308f\u304b\u3063\u305f\u306e\u3067\u3001\u6b21\u306b\u3001\u305d\u308c\u3089\u3092\u524a\u9664\u3059\u308b 2 \u3064\u306e\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002.<\/p>\n<h2 id=\"%d8%ad%d8%b0%d9%81-%d9%82%d9%88%d8%a7%d9%86%db%8c%d9%86-%d8%a8%d8%b1-%d8%a7%d8%b3%d8%a7%d8%b3-%d9%85%d8%b4%d8%ae%d8%b5%d8%a7%d8%aa\">\u4ed5\u69d8\u306b\u57fa\u3065\u3044\u3066\u30eb\u30fc\u30eb\u3092\u524a\u9664\u3059\u308b<\/h2>\n<p>iptables\u30eb\u30fc\u30eb\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\u306e\u4e00\u3064\u306f\u3001\u30eb\u30fc\u30eb\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u3092\u884c\u3046\u306b\u306f\u3001iptables\u30b3\u30de\u30f3\u30c9\u306b-D\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4ed8\u3051\u3066\u30eb\u30fc\u30eb\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u3067\u30eb\u30fc\u30eb\u3092\u524a\u9664\u3059\u308b\u5834\u5408\u306f\u3001\u30eb\u30fc\u30eb\u30ea\u30b9\u30c8\u306e\u51fa\u529b\uff08iptables -S\uff09\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001\u7121\u52b9\u306a\u5165\u529b\u30d1\u30b1\u30c3\u30c8\u3092\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u30eb\u30fc\u30eb (-A INPUT -m conntrack \u2013ctstate INVALID -j DROP) \u3092\u524a\u9664\u3059\u308b\u5834\u5408\u306f\u3001\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -D INPUT -m conntrack --ctstate INVALID -j DROP<\/code><\/pre>\n<\/div>\n<p>\u30eb\u30fc\u30eb\u306e\u4f5c\u6210\u6642\u306e\u4f4d\u7f6e\u3092\u793a\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b -A \u30aa\u30d7\u30b7\u30e7\u30f3\u306f\u3053\u3053\u3067\u306f\u7701\u7565\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<h2 id=\"%d8%ad%d8%b0%d9%81-%d9%82%d9%88%d8%a7%d9%86%db%8c%d9%86-%d8%a8%d8%b1-%d8%a7%d8%b3%d8%a7%d8%b3-%d8%b2%d9%86%d8%ac%db%8c%d8%b1%d9%87-%d9%88-%d8%b4%d9%85%d8%a7%d8%b1%d9%87\">\u30c1\u30a7\u30fc\u30f3\u3068\u756a\u53f7\u306b\u57fa\u3065\u304f\u30eb\u30fc\u30eb\u306e\u524a\u9664<\/h2>\n<p>iptables\u30eb\u30fc\u30eb\u3092\u524a\u9664\u3059\u308b\u5225\u306e\u65b9\u6cd5\u306f\u3001\u30c1\u30a7\u30fc\u30f3\u3068\u884c\u756a\u53f7\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u30eb\u30fc\u30eb\u306e\u884c\u756a\u53f7\u3092\u6307\u5b9a\u3059\u308b\u306b\u306f\u3001\u30eb\u30fc\u30eb\u3092\u8868\u5f62\u5f0f\u3067\u30ea\u30b9\u30c8\u3057\u3001--line-numbers\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -L --line-numbers<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>Output\r\nChain INPUT (policy DROP)\r\nnum target prot opt source destination\r\n1 ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED\r\n2 ACCEPT all -- anywhere anywhere\r\n3 DROP all -- anywhere anywhere ctstate INVALID\r\n4 UDP udp -- anywhere anywhere ctstate NEW\r\n5 TCP tcp -- anywhere anywhere tcp flags:FIN,SYN,RST,ACK\/SYN ctstate NEW\r\n6 ICMP icmp -- anywhere anywhere ctstate NEW\r\n7 REJECT udp -- anywhere anywhere reject-with icmp-port-unreachable\r\n8 REJECT tcp -- anywhere anywhere reject-with tcp-reset\r\n9 REJECT all -- anywhere anywhere reject-with icmp-proto-unreachable\r\n10 ACCEPT tcp -- anywhere anywhere tcp dpt:ssh ctstate NEW,ESTABLISHED<\/code><\/pre>\n<\/div>\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u30d8\u30c3\u30c0\u30fc\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u3066\u3044\u308b\u5404\u30eb\u30fc\u30eb\u884c\u306b\u884c\u756a\u53f7\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002 <code>\u756a\u53f7<\/code> \u8868\u793a\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>\u524a\u9664\u3057\u305f\u3044\u30eb\u30fc\u30eb\u304c\u308f\u304b\u3063\u305f\u3089\u3001\u30c1\u30a7\u30fc\u30f3\u756a\u53f7\u3068\u30eb\u30fc\u30eb\u884c\u3092\u30e1\u30e2\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6b21\u306b\u3001iptables -D \u30b3\u30de\u30f3\u30c9\u306b\u30c1\u30a7\u30fc\u30f3\u756a\u53f7\u3068\u30eb\u30fc\u30eb\u3092\u7d9a\u3051\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002.<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u7121\u52b9\u306a\u30d1\u30b1\u30c3\u30c8\u3092\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\u30eb\u30fc\u30eb\u3092\u524a\u9664\u3057\u305f\u3044\u5834\u5408\u3001\u30eb\u30fc\u30eb3\u306fINPUT\u30c1\u30a7\u30fc\u30f3\u306b\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\">sudo iptables -D INPUT 3<\/pre>\n<\/div>\n<p>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb \u30eb\u30fc\u30eb\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\u304c\u308f\u304b\u3063\u305f\u306e\u3067\u3001\u30eb\u30fc\u30eb \u30c1\u30a7\u30fc\u30f3\u3092\u30af\u30ea\u30a2\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002.<\/p>\n<h2 id=\"%d9%81%d9%84%d8%a7%d8%b4-%da%a9%d8%b1%d8%af%d9%86-%d8%b2%d9%86%d8%ac%db%8c%d8%b1%d9%87-%d9%87%d8%a7\">\u30c1\u30a7\u30fc\u30f3\u3092\u70b9\u6ec5\u3055\u305b\u308b<\/h2>\n<p>Iptables\u306f\u3001\u30c1\u30a7\u30fc\u30f3\u5185\u306e\u3059\u3079\u3066\u306e\u30eb\u30fc\u30eb\u3092\u524a\u9664\u3001\u3064\u307e\u308a\u30c1\u30a7\u30fc\u30f3\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3092\u884c\u3046\u305f\u3081\u306e\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n<h5 id=\"%d9%81%d9%84%d8%a7%d8%b4%db%8c%d9%86%da%af-%db%8c%da%a9-%d8%b2%d9%86%d8%ac%db%8c%d8%b1%d9%87\">\u30c1\u30a7\u30fc\u30f3\u306e\u30d5\u30e9\u30c3\u30b7\u30e5<\/h5>\n<p>\u7279\u5b9a\u306e\u30c1\u30a7\u30fc\u30f3\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\u3057\u3066\u30c1\u30a7\u30fc\u30f3\u5185\u306e\u3059\u3079\u3066\u306e\u30eb\u30fc\u30eb\u3092\u524a\u9664\u3059\u308b\u306b\u306f\u3001-F \u307e\u305f\u306f\u540c\u7b49\u306e -flush \u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u3001\u30d5\u30e9\u30c3\u30b7\u30e5\u3059\u308b\u30c1\u30a7\u30fc\u30f3\u540d\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002.<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001\u30c1\u30a7\u30fc\u30f3\u5185\u306e\u3059\u3079\u3066\u306e\u30eb\u30fc\u30eb\u3092\u524a\u9664\u3059\u308b\u306b\u306f <code>\u5165\u529b<\/code>\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -F INPUT<\/code><\/pre>\n<\/div>\n<p>\u3059\u3079\u3066\u306e\u30c1\u30a7\u30fc\u30f3\u3092\u70b9\u6ec5<\/p>\n<p>\u3059\u3079\u3066\u306e\u30c1\u30a7\u30fc\u30f3\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\u3057\u3066\u3001\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb \u30eb\u30fc\u30eb\u3092\u524a\u9664\u3059\u308b\u306b\u306f\u3001-F \u30aa\u30d7\u30b7\u30e7\u30f3\u307e\u305f\u306f\u540c\u7b49\u306e -flush \u306e\u307f\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -F<\/code><\/pre>\n<\/div>\n<h2 id=\"%d9%81%d9%84%d8%a7%d8%b4-%d9%87%d9%85%d9%87-%d9%82%d9%88%d8%a7%d9%86%db%8c%d9%86%d8%8c-%d8%ad%d8%b0%d9%81-%d9%87%d9%85%d9%87-%d8%b2%d9%86%d8%ac%db%8c%d8%b1%d9%87%d9%87%d8%a7-%d9%88-%d9%be\">\u3059\u3079\u3066\u306e\u30eb\u30fc\u30eb\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\u3057\u3001\u3059\u3079\u3066\u306e\u30c1\u30a7\u30fc\u30f3\u3092\u524a\u9664\u3057\u3001\u3059\u3079\u3066\u3092\u53d7\u3051\u5165\u308c\u308b<\/h2>\n<p>\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb \u30eb\u30fc\u30eb\u3001\u30c6\u30fc\u30d6\u30eb\u3001\u30c1\u30a7\u30fc\u30f3\u3092\u30af\u30ea\u30a2\u3057\u3001\u3059\u3079\u3066\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8a31\u53ef\u3059\u308b\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n<p>\u307e\u305a\u3001\u5404\u5185\u90e8\u30c1\u30a7\u30fc\u30f3\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30dd\u30ea\u30b7\u30fc\u3092ACCEPT\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u3053\u308c\u3092\u884c\u3046\u4e3b\u306a\u7406\u7531\u306f\u3001SSH\u7d4c\u7531\u3067\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u7de0\u3081\u51fa\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -P INPUT ACCEPT\r\nsudo iptables -P FORWARD ACCEPT\r\nsudo iptables -P OUTPUT ACCEPT<\/code><\/pre>\n<\/div>\n<p>\u6b21\u306b\u3001nat \u30c6\u30fc\u30d6\u30eb\u3068 mangle \u30c6\u30fc\u30d6\u30eb\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\u3057\u3001\u3059\u3079\u3066\u306e\u30c1\u30a7\u30fc\u30f3\u3092\u30af\u30ea\u30a2\u3057 (-F)\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u4ee5\u5916\u306e\u30c1\u30a7\u30fc\u30f3\u3092\u3059\u3079\u3066\u524a\u9664\u3057\u307e\u3059 (-X)\u3002<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo iptables -t nat -F\r\nsudo iptables -t mangle -F\r\nsudo iptables -F\r\nsudo iptables -X<\/code><\/pre>\n<\/div>\n<p>\u3053\u308c\u3067\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306f\u3059\u3079\u3066\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8a31\u53ef\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u30eb\u30fc\u30eb\u3092\u4e00\u89a7\u8868\u793a\u3059\u308b\u3068\u3001\u30eb\u30fc\u30eb\u306f\u4f55\u3082\u5b58\u5728\u305b\u305a\u30013\u3064\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u30c1\u30a7\u30fc\u30f3\uff08INPUT\u3001FORWARD\u3001OUTPUT\uff09\u306e\u307f\u304c\u6b8b\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002.<\/p>\n<h2 id=\"%d9%86%d8%aa%db%8c%d8%ac%d9%87\">\u7d50\u679c<\/h2>\n<p>\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001iptables\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30eb\u30fc\u30eb\u306e\u4e00\u89a7\u8868\u793a\u3068\u524a\u9664\u65b9\u6cd5\u3092\u5b66\u7fd2\u3057\u307e\u3057\u305f\u3002iptables\u30b3\u30de\u30f3\u30c9\u306b\u3088\u308biptables\u306e\u5909\u66f4\u306f\u4e00\u6642\u7684\u306a\u3082\u306e\u3067\u3042\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u518d\u8d77\u52d5\u5f8c\u3082\u7dad\u6301\u3059\u308b\u306b\u306f\u4fdd\u5b58\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306f\u3001\u300c\u4e00\u822c\u7684\u306a\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u30eb\u30fc\u30eb\u3068\u30b3\u30de\u30f3\u30c9\u300d\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u300c\u30eb\u30fc\u30eb\u306e\u4fdd\u5b58\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"\u306f\u3058\u3081\u306b Iptables \u306f\u3001\u307b\u3068\u3093\u3069\u306e Linux \u30b7\u30b9\u30c6\u30e0\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u304a\u3044\u3066\u57fa\u672c\u7684\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3067\u3059\u3002","protected":false},"author":1,"featured_media":14685,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"\u0641\u0647\u0631\u0633\u062a \u06a9\u0631\u062f\u0646 \u0648 \u062d\u0630\u0641 \u0642\u0648\u0627\u0646\u06cc\u0646 \u0641\u0627\u06cc\u0631\u0648\u0627\u0644 Iptables","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_yoast_wpseo_canonical":"","_yoast_wpseo_opengraph-description":"","_yoast_wpseo_opengraph-image":"","_yoast_wpseo_twitter-description":"","_yoast_wpseo_twitter-image":"","_yoast_wpseo_focuskeywords":"","_yoast_wpseo_primary_category":"193","footnotes":""},"categories":[193,323],"tags":[385],"class_list":{"0":"post-14684","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-tutorials","8":"category-firewall","9":"tag-385"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u0646\u062d\u0648\u0647 \u0641\u0647\u0631\u0633\u062a \u06a9\u0631\u062f\u0646 \u0648 \u062d\u0630\u0641 \u0642\u0648\u0627\u0646\u06cc\u0646 \u0641\u0627\u06cc\u0631\u0648\u0627\u0644 Iptables - \u0628\u0644\u0627\u06af ITPiran<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.itpiran.net\/blog\/ja\/tutorials\/how-to-list-and-delete-iptables-firewall-rules\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0646\u062d\u0648\u0647 \u0641\u0647\u0631\u0633\u062a \u06a9\u0631\u062f\u0646 \u0648 \u062d\u0630\u0641 \u0642\u0648\u0627\u0646\u06cc\u0646 \u0641\u0627\u06cc\u0631\u0648\u0627\u0644 Iptables - \u0628\u0644\u0627\u06af ITPiran\" \/>\n<meta property=\"og:description\" content=\"\u0645\u0642\u062f\u0645\u0647 Iptables \u06cc\u06a9 \u0641\u0627\u06cc\u0631\u0648\u0627\u0644 \u0627\u0633\u062a \u06a9\u0647 \u0646\u0642\u0634 \u0627\u0633\u0627\u0633\u06cc \u062f\u0631 \u0627\u0645\u0646\u06cc\u062a \u0634\u0628\u06a9\u0647 \u0628\u0631\u0627\u06cc \u0627\u06a9\u062b\u0631 \u0633\u06cc\u0633\u062a\u0645 \u0647\u0627\u06cc \u0644\u06cc\u0646\u0648\u06a9\u0633 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