{"id":357,"date":"2016-06-07T10:40:00","date_gmt":"2016-06-07T02:40:00","guid":{"rendered":"https:\/\/mille.in\/?p=357"},"modified":"2025-02-21T11:57:07","modified_gmt":"2025-02-21T03:57:07","slug":"iptables%e7%b0%a1%e5%96%ae%e8%a8%ad%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/mille.in\/?p=357","title":{"rendered":"iptables\u7c21\u55ae\u8a2d\u7f6e"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u500b\u4eba\u8a8d\u70ba\uff0ciptables\u4f5c\u70ba\u4e00\u500b\u61c9\u7528\u5c64\u7684\u5b58\u5728\uff0c\u662f\u6700\u70ba\u958b\u653e\u3001\u9ad8\u6548\u7684\u8a2a\u554f\u7b56\u7565\u7ba1\u7406\u7a0b\u5e8f\uff0c\u4ed6\u548c\u904b\u884c\u5728Linux\u6838\u5fc3\u5c64\u7684Netfilter\u914d\u5408\u5de5\u4f5c\uff0c\u6210\u70ba\u4e86\u4e00\u500b\u7d93\u5178\u7684Ring3 &amp; Ring0\u67b6\u69cb\u5178\u7bc4\u3002iptables\u53ef\u4ee5\u6709\u5f88\u9ad8\u7d1a\u4e14\u5ee3\u6cdb\u7684\u61c9\u7528\uff0c\u6211\u8a08\u5283\u5728\u65e5\u5f8c\u5c07\u9019\u4e9b\u90fd\u6574\u7406\u51fa\u4f86\uff0c\u4ee5\u5099\u67e5\u627e\u3002\u4eca\u5929\uff0c\u5148\u4e0a\u4e00\u7247\u7bc7\u790e\u914d\u7f6e\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u982d\u90e8<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u56e0\u70ba\u624b\u4e0a\u540c\u6642\u7ba1\u7406\u8457\u591a\u53f0\u4f7f\u547d\u4e0d\u540c\u670d\u52d9\u5668\uff0c\u70ba\u4e86\u9632\u6b62\u5e73\u6642\u5728\u4fee\u6539\u914d\u7f6e\u6642\u5f04\u932f\uff0c\u6240\u4ee5\u5728\u982d\u90e8\u5beb\u4e0a\u670d\u52d9\u5668\u540d\u7a31\u662f\u500b\u4e0d\u932f\u7684\u7fd2\u6163<\/li>\n\n\n\n<li><code># Server-Info<\/code><\/li>\n\n\n\n<li>\u9996\u5148\uff0c\u662f\u4e09\u4e2a\u5185\u5efa\u94fe<\/li>\n\n\n\n<li><code>*filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] <\/code>\u4e0b\u9762\u958b\u59cb\u5beb\u898f\u5247\uff0c\u898f\u5247\u672c\u8457\u4e00\u500b\u57fa\u672c\u7684\u601d\u8def\uff1a<strong>\u51fa\u53e3<\/strong>\u3001<strong>\u5165\u53e3<\/strong>\u63a7\u5236\u5176\u4e2d\u4e00\u500b\u5373\u53ef\uff0c\u53e6\u4e00\u500b\u53ef\u4ee5\u5b8c\u5168\u958b\u653e\uff0c\u9019\u6a23\u53ef\u4ee5\u5f88\u5927\u7a0b\u5ea6\u4e0a\u964d\u4f4e\u914d\u7f6e\u6210\u672c\uff0c\u6240\u4ee5\u6211\u5011\u5728\u672b\u5c3e\u7684\u6700\u5f8c\u4e00\u689d\u898f\u5247\uff0c\u4f7f\u7528<code>-A OUTPUT -j ACCEPT<\/code>,\u6240\u6709<strong>\u51fa\u7ad9<\/strong>\u6578\u64da\u5168\u90e8\u5141\u8a31\uff0c\u7136\u5f8c\u53bb\u8a2d\u7f6e<strong>\u5165\u7ad9<\/strong>\u898f\u5247<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u914d\u7f6e<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u57fa\u672c\u914d\u7f6e\uff1a\u958b\u653e\u672c\u5730ping\u3001lookback\uff01\u7b49<\/li>\n\n\n\n<li><code>-A INPUT -i lo -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited<\/code><\/li>\n\n\n\n<li>\u7136\u5f8c\u662f\u5167\u7db2\u767d\u540d\u55ae<\/li>\n\n\n\n<li><code>-A INPUT -s 10.0.0.0\/8 -j ACCEPT -A INPUT -s 172.16.0.0\/12 -j ACCEPT -A INPUT -s 192.168.0.0\/16 -j ACCEPT<\/code><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u70ba\u898f\u7bc4\u66f8\u5beb\uff0c\u4e5f\u53ef\u4ee5\u5728\u5167\u7db2\u767d\u540d\u55ae\u4e0b\u9762\u914d\u7f6e\u4f60\u9700\u8981\u7684\u5916\u7db2\u767d\u540d\u55ae\uff0c\u6bd4\u5982\u5141\u8a31\u7279\u5b9aIP\u7684\u670d\u52d9\u5668\u8a2a\u554f\u7279\u5b9a\u7aef\u53e3\u7b49.<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7136\u5f8c\u662f\u8a2a\u554f\u63a7\u5236\u7aef\u53e3<\/li>\n\n\n\n<li><code>-A INPUT -p tcp --dport 21 -j ACCEPT \/\/ftp service -A INPUT -p tcp --dport 80 -j ACCEPT \/\/web service -A INPUT -p tcp --dport 443 -j ACCEPT \/\/SSL service -A INPUT -p tcp --dport 22 -j ACCEPT \/\/ssh service <\/code><strong>\u5f37\u8abf\u4e00\u4e0bSSH\u7aef\u53e3\uff0c\u5225\u5fd8\u8a18\u958b\u4e86\uff01\u5426\u5247\u5f8c\u679c\u4f60\u61c9\u8a72\u77e5\u9053\ud83d\ude04<\/strong><\/li>\n\n\n\n<li>\u7136\u5f8c\uff0c\u8b93\u6211\u5011\u5e79\u6389\u4e00\u4e9bhacker\u5e38\u7528\u7684\u6728\u99ac\u7aef\u53e3\uff0c\u9019\u4e9b\u7aef\u53e3\u7684\u6578\u64da\u5168\u90e8\u4e1f\u68c4<\/li>\n\n\n\n<li><code>-A OUTPUT -p tcp --sport 31337:31340 -j DROP -A OUTPUT -p tcp --sport 27444 -j DROP -A OUTPUT -p tcp --sport 27665 -j DROP -A OUTPUT -p tcp --sport 20034 -j DROP -A OUTPUT -p tcp --sport 9704 -j DROP -A OUTPUT -p tcp --sport 137:139 -j DROP -A OUTPUT -p tcp --sport 2049 -j DROP<\/code><\/li>\n\n\n\n<li>\u5904\u7406IP\u788e\u7247\u6570\u91cf,\u9632\u6b62\u653b\u51fb,\u5141\u8bb8\u6bcf\u79d2100\u4e2a<\/li>\n\n\n\n<li><code>-A FORWARD -f -m limit --limit 100\/s --limit-burst 100 -j ACCEPT<\/code><\/li>\n\n\n\n<li>\u8bbe\u7f6eICMP\u5305\u8fc7\u6ee4,\u5141\u8bb8\u6bcf\u79d21\u4e2a\u5305,\u9650\u5236\u89e6\u53d1\u6761\u4ef6\u662f10\u4e2a\u5305<\/li>\n\n\n\n<li><code>-A FORWARD -p icmp -m limit --limit 1\/s --limit-burst 10 -j ACCEPT<\/code><\/li>\n\n\n\n<li>#\u4e22\u5f03\u574f\u7684TCP\u5305<\/li>\n\n\n\n<li><code>-A FORWARD -p TCP ! --syn -m state --state NEW -j DROP<\/code><\/li>\n\n\n\n<li>#\u5f00\u542f\u8f6c\u53d1\u529f\u80fd<\/li>\n\n\n\n<li><code>-A FORWARD -i eth0 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT -A FORWARD -i eth1 -o eh0 -j ACCEPT<\/code><\/li>\n\n\n\n<li>\u9664\u4e0a\u9762\u8a2d\u7f6e\u7684\u898f\u5247\u5916\uff0c\u62d2\u7edd\u5176\u5b83\u6240\u6709\u7684\u9032\u7ad9\u548c\u8f49\u767c<\/li>\n\n\n\n<li><code>-A INPUT -j DROP -A FORWARD -j DROP<\/code><\/li>\n\n\n\n<li>\u6700\u5f8c\uff0c\u5f00\u653e\u51fa\u53e3<\/li>\n\n\n\n<li><code>-A OUTPUT -j ACCEPT COMMIT<\/code><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u7528\u547d\u4ee4<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>$ iptables -F        \/\/\u6e05\u9664\u6240\u6709\u898f\u5247\u93c8\u7684\u898f\u5247\n$ iptables -X        \/\/\u6e05\u9664\u6240\u6709\u81ea\u5b9a\u7fa9\u93c8\u898f\u5247\n$ iptables -nL --line-number   \/\/\u67e5\u770b\u7576\u524d\u914d\u7f6e\n$ iptables &#91;-AI \u94fe\u540d] &#91;-io \u7f51\u7edc\u63a5\u53e3] &#91;-p \u534f\u8bae] &#91;-s \u6765\u6e90IP\/\u7f51\u57df] &#91;-d \u76ee\u6807IP\/\u7f51\u57df] -j &#91;ACCEPT|DROP|REJECT|LOG]   \/\/\u6dfb\u52a0\u4e00\u689d\u898f\u5247<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f38\u624b\u9ee8\u8907\u88fd\u7c98\u8cbc\u5340<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># Server-Info\n\n*filter  \n:INPUT ACCEPT &#91;0:0]  \n:FORWARD ACCEPT &#91;0:0]  \n:OUTPUT ACCEPT &#91;0:0] \n\n#\u958b\u653eping\/lo\n-A INPUT -i lo -j ACCEPT  \n-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT  \n-A INPUT -p icmp -j ACCEPT  \n-A INPUT -j REJECT --reject-with icmp-host-prohibited  \n\n#\u5167\u7db2\u767d\u540d\u55ae  \n-A INPUT -s 10.0.0.0\/8 -j ACCEPT  \n-A INPUT -s 172.16.0.0\/12 -j ACCEPT  \n-A INPUT -s 192.168.0.0\/16 -j ACCEPT  \n\n#\u8a2a\u554f\u63a7\u5236\u7aef\u53e3    \n-A INPUT -p tcp --dport 21 -j ACCEPT   \/\/ftp service\n-A INPUT -p tcp --dport 80 -j ACCEPT   \/\/web service\n-A INPUT -p tcp --dport 443 -j ACCEPT  \/\/SSL service\n-A INPUT -p tcp --dport 22 -j ACCEPT   \/\/ssh service \n\n#\u5e38\u7528\u6728\u99ac\u7aef\u53e3\n-A OUTPUT -p tcp --sport 31337:31340 -j DROP  \n-A OUTPUT -p tcp --sport 27444 -j DROP  \n-A OUTPUT -p tcp --sport 27665 -j DROP  \n-A OUTPUT -p tcp --sport 20034 -j DROP  \n-A OUTPUT -p tcp --sport 9704 -j DROP  \n-A OUTPUT -p tcp --sport 137:139 -j DROP  \n-A OUTPUT -p tcp --sport 2049 -j DROP  \n\n#\u5904\u7406IP\u788e\u7247\u6570\u91cf,\u9632\u6b62\u653b\u51fb,\u5141\u8bb8\u6bcf\u79d2100\u4e2a  \n-A FORWARD -f -m limit --limit 100\/s --limit-burst 100 -j ACCEPT  \n\n#\u8bbe\u7f6eICMP\u5305\u8fc7\u6ee4,\u5141\u8bb8\u6bcf\u79d21\u4e2a\u5305,\u9650\u5236\u89e6\u53d1\u6761\u4ef6\u662f10\u4e2a\u5305  \n-A FORWARD -p icmp -m limit --limit 1\/s --limit-burst 10 -j ACCEPT  \n\n#\u4e22\u5f03\u574f\u7684TCP\u5305  \n-A FORWARD -p TCP ! --syn -m state --state NEW -j DROP  \n\n#\u5f00\u542f\u8f6c\u53d1\u529f\u80fd\n-A FORWARD -i eth0 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT  \n-A FORWARD -i eth1 -o eh0 -j ACCEPT  \n\n#\u62d2\u7edd\u5176\u5b83\u6240\u6709\u7684\u9032\u7ad9\u548c\u8f49\u767c\n-A INPUT -j DROP  \n-A FORWARD -j DROP  \n\n#\u6700\u5f8c\uff0c\u5f00\u653e\u51fa\u53e3  \n-A OUTPUT -j ACCEPT  \n\nCOMMIT  <\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u500b\u4eba\u8a8d\u70ba\uff0ciptables\u4f5c\u70ba\u4e00\u500b\u61c9\u7528\u5c64&hellip;<\/p>\n","protected":false},"author":1,"featured_media":358,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[8],"tags":[64],"class_list":["post-357","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-code","tag-64"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/mille.in\/index.php?rest_route=\/wp\/v2\/posts\/357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mille.in\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mille.in\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mille.in\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mille.in\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=357"}],"version-history":[{"count":2,"href":"https:\/\/mille.in\/index.php?rest_route=\/wp\/v2\/posts\/357\/revisions"}],"predecessor-version":[{"id":360,"href":"https:\/\/mille.in\/index.php?rest_route=\/wp\/v2\/posts\/357\/revisions\/360"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mille.in\/index.php?rest_route=\/wp\/v2\/media\/358"}],"wp:attachment":[{"href":"https:\/\/mille.in\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mille.in\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mille.in\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}