{"id":839,"date":"2011-03-18T19:06:06","date_gmt":"2011-03-18T11:06:06","guid":{"rendered":"http:\/\/www.jpuyy.com\/blog\/?p=839"},"modified":"2014-05-21T13:21:14","modified_gmt":"2014-05-21T05:21:14","slug":"iptables-rules","status":"publish","type":"post","link":"https:\/\/jpuyy.com\/?p=839","title":{"rendered":"iptables\u8bbe\u7f6e\u89c4\u5219"},"content":{"rendered":"<p>\u7528iptables\u547d\u4ee4\u662f\u53ca\u65f6\u751f\u6548\u7684\uff0c\u7528\u4e24\u53f0\u673a\u5f88\u4fbf\u4e8e\u6d4b\u8bd5\u5b66\u4e60<\/p>\n<p>filter\u662f\u6700\u5e38\u7528\u7684\u8868\uff0c\u5728filter\u8868\u4e2d\u6700\u5e38\u7528\u7684\u4e09\u4e2a\u76ee\u6807\u662fACCEPT\u3001DROP\u548cREJECT\u3002<\/p>\n<p>DROP\u4f1a\u4e22\u5f03\u6570\u636e\u5305\uff0c\u4e0d\u518d\u5bf9\u5176\u8fdb\u884c\u4efb\u4f55\u5904\u7406\u3002REJECT\u4f1a\u628a\u51fa\u9519\u4fe1\u606f\u4f20\u9001\u81f3\u53d1\u9001\u6570\u636e\u5305\u7684\u4e3b\u673a\u3002<\/p>\n<p>\u6bd4\u5982\uff1a<\/p>\n<pre>iptables -I INPUT -s 219.230.xxx.xxx -j DROP<\/pre>\n<p>\u8fd9\u6837ping\u4f1a\u76f4\u63a5ping\u4e0d\u901a,\u65e0\u4efb\u4f55\u4fe1\u606f\uff1b<\/p>\n<pre>iptables -I INPUT -s 219.230.xxx.xxx -j REJECT<\/pre>\n<p>\u76ee\u6807\u4e3b\u673a\u4e0d\u80fd\u5230\u8fbe \u201cDestination Host Unreachable\u201d\u4fe1\u606f\u8bf4\u660e\u5bf9\u65b9\u4e3b\u673a\u4e0d\u5b58\u5728\u6216\u8005\u6ca1\u6709\u8ddf\u5bf9\u65b9\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n<h1><span style=\"color: #ff6600;\">\u6e05\u9664\u5df2\u6709iptables\u89c4\u5219<\/span><\/h1>\n<p>iptables -F<br \/>\niptables -X<br \/>\niptables -Z<\/p>\n<h1><span style=\"color: #ff6600;\">\u5f00\u653e\u6307\u5b9a\u7684\u7aef\u53e3<\/span><\/h1>\n<p>#\u5141\u8bb8\u672c\u5730\u56de\u73af\u63a5\u53e3(\u5373\u8fd0\u884c\u672c\u673a\u8bbf\u95ee\u672c\u673a)<\/p>\n<pre>iptables -A INPUT -s 127.0.0.1 -d 127.0.0.1 -j ACCEPT<\/pre>\n<p># \u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u6216\u76f8\u5173\u8fde\u7684\u901a\u884c<\/p>\n<pre>iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT<\/pre>\n<p>#\u5141\u8bb8\u6240\u6709\u672c\u673a\u5411\u5916\u7684\u8bbf\u95ee<\/p>\n<pre>iptables -A OUTPUT -j ACCEPT<\/pre>\n<p># \u5141\u8bb8\u8bbf\u95ee22\u7aef\u53e3<\/p>\n<pre>iptables -A INPUT -p tcp --dport 22 -j ACCEPT<\/pre>\n<p>#\u5141\u8bb8\u8bbf\u95ee80\u7aef\u53e3<\/p>\n<pre>iptables -A INPUT -p tcp --dport 80 -j ACCEPT<\/pre>\n<p>#\u5141\u8bb8FTP\u670d\u52a1\u768421\u548c20\u7aef\u53e3<\/p>\n<pre>iptables -A INPUT -p tcp --dport 21 -j ACCEPT\r\niptables -A INPUT -p tcp --dport 20 -j ACCEPT<\/pre>\n<p>#\u5982\u679c\u6709\u5176\u4ed6\u7aef\u53e3\u7684\u8bdd\uff0c\u89c4\u5219\u4e5f\u7c7b\u4f3c\uff0c\u7a0d\u5fae\u4fee\u6539\u4e0a\u8ff0\u8bed\u53e5\u5c31\u884c<br \/>\n#\u7981\u6b62\u5176\u4ed6\u672a\u5141\u8bb8\u7684\u89c4\u5219\u8bbf\u95ee<\/p>\n<pre>iptables -A INPUT -j REJECT\r\niptables -A FORWARD -j REJECT<\/pre>\n<h1><span style=\"color: #ff6600;\">\u5c4f\u853dIP<\/span><\/h1>\n<p>#\u5c4f\u853d\u5355\u4e2aIP\u7684\u547d\u4ee4\u662f<\/p>\n<pre> iptables -I INPUT -s 123.45.6.7 -j DROP<\/pre>\n<p>#\u5c01\u6574\u4e2a\u6bb5\u5373\u4ece123.0.0.1\u5230123.255.255.254\u7684\u547d\u4ee4<\/p>\n<pre> iptables -I INPUT -s 123.0.0.0\/8 -j DROP<\/pre>\n<p>#\u5c01IP\u6bb5\u5373\u4ece123.45.0.1\u5230123.45.255.254\u7684\u547d\u4ee4<\/p>\n<pre> iptables -I INPUT -s 124.45.0.0\/16 -j DROP<\/pre>\n<p>#\u5c01IP\u6bb5\u5373\u4ece123.45.6.1\u5230123.45.6.254\u7684\u547d\u4ee4\u662f<\/p>\n<pre> iptables -I INPUT -s 123.45.6.0\/24 -j DROP<\/pre>\n<h1><span style=\"color: #ff6600;\">\u67e5\u770b\u5df2\u6dfb\u52a0\u7684iptables\u89c4\u5219<\/span><\/h1>\n<p>\u7b80\u5355\u67e5\u770b #iptables &#8211;list<\/p>\n<pre>iptables -L -n<\/pre>\n<p>v\uff1a\u663e\u793a\u8be6\u7ec6\u4fe1\u606f\uff0c\u5305\u62ec\u6bcf\u6761\u89c4\u5219\u7684\u5339\u914d\u5305\u6570\u91cf\u548c\u5339\u914d\u5b57\u8282\u6570<br \/>\nx\uff1a\u5728 v \u7684\u57fa\u7840\u4e0a\uff0c\u7981\u6b62\u81ea\u52a8\u5355\u4f4d\u6362\u7b97\uff08K\u3001M\uff09<br \/>\nn\uff1a\u53ea\u663e\u793aIP\u5730\u5740\u548c\u7aef\u53e3\u53f7\uff0c\u4e0d\u5c06ip\u89e3\u6790\u4e3a\u57df\u540d<\/p>\n<p>\u7528iptables\u505aSNAT\u7684\u65f6\u5019\uff0c\u67e5\u770b\u9700\u8981\u518d\u52a0 -t nat<\/p>\n<pre>iptables -L -t nat<\/pre>\n<h1><span style=\"color: #ff6600;\">\u5220\u9664\u5df2\u6dfb\u52a0\u7684iptables\u89c4\u5219<\/span><\/h1>\n<p>\u5c06\u6240\u6709iptables\u4ee5\u5e8f\u53f7\u6807\u8bb0\u663e\u793a\uff0c\u6267\u884c\uff1a<\/p>\n<pre>iptables -L -n --line-numbers<\/pre>\n<p>\u6bd4\u5982\u8981\u5220\u9664INPUT\u91cc\u5e8f\u53f7\u4e3a8\u7684\u89c4\u5219\uff0c\u6267\u884c\uff1a<\/p>\n<pre>iptables -D INPUT 3\u00a0 \uff08\u6ce8\u610f\u5927\u5c0f\u5199\uff09<\/pre>\n<h1><span style=\"color: #ff6600;\">ubuntu\u4e0b\u9762iptables\u7684\u5f00\u673a\u542f\u52a8\u53ca\u89c4\u5219\u4fdd\u5b58<\/span><\/h1>\n<p><a href=\"https:\/\/help.ubuntu.com\/community\/IptablesHowTo\">https:\/\/help.ubuntu.com\/community\/IptablesHowTo<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7528iptables\u547d\u4ee4\u662f\u53ca\u65f6\u751f\u6548\u7684\uff0c\u7528\u4e24\u53f0\u673a\u5f88\u4fbf\u4e8e\u6d4b\u8bd5\u5b66\u4e60 filter\u662f\u6700\u5e38\u7528\u7684\u8868\uff0c\u5728filter\u8868\u4e2d\u6700\u5e38\u7528\u7684\u4e09\u4e2a\u76ee\u6807\u662fACCEPT\u3001DROP\u548cREJECT\u3002 DROP\u4f1a\u4e22\u5f03\u6570\u636e\u5305\uff0c\u4e0d\u518d\u5bf9\u5176\u8fdb\u884c\u4efb\u4f55\u5904\u7406\u3002REJECT\u4f1a\u628a\u51fa\u9519\u4fe1\u606f\u4f20\u9001\u81f3\u53d1\u9001\u6570\u636e\u5305\u7684\u4e3b\u673a\u3002 \u6bd4\u5982\uff1a iptables -I INPUT -s 219.230.xxx.xxx -j DROP \u8fd9\u6837ping\u4f1a\u76f4\u63a5ping\u4e0d\u901a,\u65e0\u4efb\u4f55\u4fe1\u606f\uff1b iptables -I INPUT -s 219.230.xxx.xxx -j REJECT \u76ee\u6807\u4e3b\u673a\u4e0d\u80fd\u5230\u8fbe \u201cDestination Host Unreachable\u201d\u4fe1\u606f\u8bf4\u660e\u5bf9\u65b9\u4e3b\u673a\u4e0d\u5b58\u5728\u6216\u8005\u6ca1\u6709\u8ddf\u5bf9\u65b9\u5efa\u7acb\u8fde\u63a5\u3002 \u6e05\u9664\u5df2\u6709iptables\u89c4\u5219 iptables -F iptables -X iptables -Z \u5f00\u653e\u6307\u5b9a\u7684\u7aef\u53e3 #\u5141\u8bb8\u672c\u5730\u56de\u73af\u63a5\u53e3(\u5373\u8fd0\u884c\u672c\u673a\u8bbf\u95ee\u672c\u673a) iptables -A INPUT -s 127.0.0.1 -d 127.0.0.1 -j ACCEPT # \u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u6216\u76f8\u5173\u8fde\u7684\u901a\u884c iptables -A INPUT -m state &#8211;state ESTABLISHED,RELATED -j ACCEPT #\u5141\u8bb8\u6240\u6709\u672c\u673a\u5411\u5916\u7684\u8bbf\u95ee iptables -A [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[23],"class_list":["post-839","post","type-post","status-publish","format-standard","hentry","category-linux","tag-summary"],"_links":{"self":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/839","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=839"}],"version-history":[{"count":24,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/839\/revisions"}],"predecessor-version":[{"id":6337,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/839\/revisions\/6337"}],"wp:attachment":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=839"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=839"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}