{"id":212512,"date":"2021-03-03T08:36:04","date_gmt":"2021-03-03T00:36:04","guid":{"rendered":"https:\/\/lrxjmw.cn\/?p=212512"},"modified":"2021-02-26T10:37:50","modified_gmt":"2021-02-26T02:37:50","slug":"iptables-common-samples","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/iptables-common-samples.html","title":{"rendered":"iptables \u5e38\u7528\u89c4\u5219\u4f7f\u7528\u5b9e\u4f8b"},"content":{"rendered":"<table>\n<tbody>\n<tr>\n<td style=\"padding: 5px 12px; width: 25px; font-size: 22px; text-align: center; background: #E8E8E8; line-height: 30px; color: #999;\">\u5bfc\u8bfb<\/td>\n<td style=\"padding: 10px 10px 12px; line-height: 20px;\"><strong>\u5728\u672c\u6587\u4e2d\u5217\u51fa\u4e86\u4e00\u4e9b\u5b9e\u7528\u7684iptables\u89c4\u5219\uff0c\u53ef\u4ee5\u53c2\u8003\u3002<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>1\u3001\u6e05\u7a7a\u6570\u636e\u5305\u6d41\u91cf\u3001\u6e05\u7a7a\u94fe\u3001\u6e05\u7a7a\u89c4\u5219<\/strong><\/div>\n<p>\u4f7f\u7528\u4e0b\u9762\u51e0\u4e2a\u547d\u4ee4\u53ef\u4ee5\u6e05\u7a7aiptables\u8868\uff1a<\/p>\n<pre>\r\n# \u4f7f\u7528-t\u9009\u9879\u9009\u62e9\u54ea\u4e2a\u8868\uff0c\u8868\u6709filter, nat , mangle\u4e09\u4e2a\u8868\r\niptables -t filter -F\r\niptables -t filter -X\r\niptables -t filter -Z\r\n<\/pre>\n<p><code>-F<\/code>\u6e05\u7a7a\u6240\u6709\u94fe\u7684\u89c4\u5219\uff0c<code>-X<\/code>\u5220\u9664\u81ea\u5b9a\u4e49\u7684\u94fe\uff0c<code>-Z<\/code>\u6e05\u7a7a\u6570\u636e\u5305\u6d41\u91cf\u3002<\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>2\u3001\u8bbe\u7f6e\u9ed8\u8ba4\u7b56\u7565<\/strong><\/div>\n<p>\u9ed8\u8ba4\u94fe\u7b56\u7565\u662fACCEPT\u3002\u5bf9\u4e8e\u6240\u6709INPUT\uff0cFORWARD\u548cOUTPUT\u94fe\uff0c\u5c06\u5176\u66f4\u6539\u4e3aDROP\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>\r\niptables -P INPUT DROP\r\niptables -P OUTPUT DROP\r\niptables -P FORWARDING DROP\r\n<\/pre>\n<p>\u5c06INPUT\u548cOUTPUT\u94fe\u7684\u9ed8\u8ba4\u7b56\u7565\u90fd\u8bbe\u7f6e\u4e3aDROP\u65f6\uff0c\u5bf9\u6bcf\u4e2a\u9632\u706b\u5899\u89c4\u5219\u8981\u6c42\uff0c\u90fd\u5e94\u5b9a\u4e49\u4e24\u4e2a\u89c4\u5219\uff0c\u4e00\u4e2a\u7528\u4e8eINPUT\uff0c\u4e00\u4e2a\u7528\u4e8eOUTPUT\u3002<\/p>\n<p>\u5982\u679c\u4fe1\u4efb\u5185\u90e8\u7528\u6237\uff0c\u5219\u53ef\u4ee5\u7701\u7565\u4e0a\u9762\u7684OUTPUT\u3002\u5373\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4e0d\u4e22\u5f03\u6240\u6709OUTPUT\u6570\u636e\u5305\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5bf9\u4e8e\u62e5\u6709\u7684\u6bcf\u4e2a\u9632\u706b\u5899\u89c4\u5219\u8981\u6c42\uff0c\u53ea\u9700\u5b9a\u4e49\u4e00\u4e2a\u89c4\u5219\u5373\u53ef\u3002\u5373\u53ea\u4e3aINPUT\u5b9a\u4e49\u89c4\u5219\uff0c\u56e0\u4e3a\u6240\u6709\u6570\u636e\u5305\u7684\u4f20\u51fa\u90fd\u662fACCEPT\u3002<\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>3\u3001\u963b\u6b62\u6307\u5b9a\u7684IP\u5730\u5740\u8fdb\u5165<\/strong><\/div>\n<pre>\r\nBLOCK_THIS_IP=\"x.x.x.x\" iptables -A INPUT -s \"$BLOCK_THIS_IP\" -j DROP\r\n\u6216\u8005\r\niptables -A INPUT -i ens160 -s \"$BLOCK_THIS_IP\" -j DROP\r\n\u6216\u8005 iptables -A INPUT -i ens160 -p tcp -s \"$BLOCK_THIS_IP\" -j DROP\r\n<\/pre>\n<p>\u5b9a\u4e49\u4e00\u4e2a\u53d8\u91cf\uff0c\u503c\u5199\u5165\u8981\u963b\u6b62\u7684ip\u5730\u5740\u3002\u4e0a\u9762\u7b2c\u4e00\u6761\u89c4\u5219\u7684\u610f\u601d\u662f\u4ece\u67d0\u4e2aip\u8fdb\u5165\u7684\u6d41\u91cf\u62d2\u7edd\u6389\u3002\u7b2c\u4e8c\u6761\u89c4\u5219\u662f\u963b\u6b62\u67d0\u4e2aip\u5730\u5740\u4eceeth0\u8fdb\u5165\u7684\u6d41\u91cf\u3002\u7b2c\u4e09\u6761\u89c4\u5219\u6307\u7684\u662f\u62d2\u7edd\u67d0\u4e2aip\u5730\u5740\u4eceeth0\u8fdb\u5165\u8bbf\u95eetcp\u534f\u8bae\u7684\u6d41\u91cf\u3002<\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>4\u3001\u5141\u8bb8\u5916\u90e8\u7528\u6237ssh\u767b\u5f55\u672c\u673a<\/strong><\/div>\n<p>\u4ee5\u4e0b\u89c4\u5219\u5141\u8bb8ens160\u63a5\u53e3\u4e0a\u7684\u6240\u6709\u4f20\u5165\u7684ssh\u8fde\u63a5\u3002<\/p>\n<pre>\r\niptables -A INPUT -i ens160 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT\r\niptables -A OUTPUT -o ens160 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT\r\n<\/pre>\n<p>\u4e0b\u9762\u662f\u5141\u8bb8\u6307\u5b9a\u7f51\u6bb5\u7684ip\u5730\u5740\u8fde\u63a5\u672c\u673a\u7684ssh\u670d\u52a1\uff1a<\/p>\n<pre>\r\niptables -A INPUT -i ens160 -p tcp -s 192.168.100.0\/24 --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT\r\niptables -A OUTPUT -o ens160 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT\r\n<\/pre>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>5\u3001\u5141\u8bb8\u672c\u673a\u4f7f\u7528ssh\u767b\u5f55\u8fdc\u7a0b\u4e3b\u673a<\/strong><\/div>\n<p>\u4ee5\u4e0b\u89c4\u5219\u5141\u8bb8\u4f20\u51fassh\u8fde\u63a5\u3002\u5f53\u4ece\u5185\u90e8ssh\u8fde\u63a5\u5230\u5916\u90e8\u670d\u52a1\u5668\u65f6\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre>\r\niptables -A OUTPUT -o ens160 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT\r\niptables -A INPUT -i ens160 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT\r\n<\/pre>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>6\u3001\u4f7f\u7528multiport\u6a21\u5757\uff0c\u5141\u8bb8\u5916\u90e8\u8bbf\u95ee\u672c\u673a\u768480,443<\/strong><\/div>\n<p>\u4e0b\u9762\u4f7f\u7528<code>multiport<\/code>\u6a21\u5757\uff0c\u53ef\u4ee5\u51cf\u5c11\u5199\u5165\u89c4\u5219\u6761\u6570\u3002\u4e0b\u9762\u5b9e\u4f8b\u5141\u8bb8\u5916\u90e8\u8bbf\u95ee\u672c\u673a\u7684http,https\u670d\u52a1\u3002<\/p>\n<pre>\r\niptables -A INPUT -i ens160 -p tcp -m multiport --dports 80,443 -m state --state NEW,ESTABLISHED -j ACCEPT\r\niptables -A OUTPUT -o ens160 -p tcp -m multiport --sports 80,443 -m state --state ESTABLISHED -j ACCEPT\r\n<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image1-5.png\" alt=\"\" width=\"874\" height=\"52\" class=\"alignnone size-full wp-image-212514\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image1-5.png 874w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image1-5-300x18.png 300w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image1-5-768x46.png 768w\" sizes=\"auto, (max-width: 874px) 100vw, 874px\" \/><\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>7\u3001\u5141\u8bb8\u672c\u5730\u8bbf\u95ee\u5916\u90e8\u7684http,https\u670d\u52a1<\/strong><\/div>\n<p>\u4e0b\u9762\u547d\u4ee4\u5141\u8bb8\u672c\u673a\u8bbf\u95ee\u5916\u9762\u7684http,https\u670d\u52a1\uff1a<\/p>\n<pre>\r\niptables -A OUTPUT -o ens160 -p tcp -m multiport --dports 80,443 -m state --state NEW,ESTABLISHED -j ACCEPT\r\niptables -A INPUT -i ens160 -p tcp -m multiport --sports 80,443 -m state --state ESTABLISHED -j ACCEPT\r\n<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image2-5.png\" alt=\"\" width=\"874\" height=\"55\" class=\"alignnone size-full wp-image-212515\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image2-5.png 874w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image2-5-300x19.png 300w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image2-5-768x48.png 768w\" sizes=\"auto, (max-width: 874px) 100vw, 874px\" \/><\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>8\u3001\u5141\u8bb8\u5916\u90e8ping\u672c\u673a<\/strong><\/div>\n<p>\u4ee5\u4e0b\u89c4\u5219\u5141\u8bb8\u5916\u90e8\u7528\u6237\u80fd\u591fping\u4f60\u7684\u670d\u52a1\u5668\uff1a<\/p>\n<pre>\r\niptables -A INPUT -p icmp --icmp-type echo-request -j ACCEPT\r\niptables -A OUTPUT -p icmp --icmp-type echo-reply -j ACCEPT\r\n<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image3-4.png\" alt=\"\" width=\"774\" height=\"297\" class=\"alignnone size-full wp-image-212516\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image3-4.png 774w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image3-4-300x115.png 300w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image3-4-768x295.png 768w\" sizes=\"auto, (max-width: 774px) 100vw, 774px\" \/><\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>9\u3001\u5141\u8bb8\u672c\u673aping\u5916\u90e8<\/strong><\/div>\n<p>\u4ee5\u4e0b\u89c4\u5219\u5141\u8bb8\u4ece\u5185\u90e8ping\u5230\u4efb\u4f55\u5916\u90e8\u670d\u52a1\u5668\uff1a<\/p>\n<pre>\r\niptables -A OUTPUT -p icmp --icmp-type echo-request -j ACCEPT\r\niptables -A INPUT -p icmp --icmp-type echo-reply -j ACCEPT\r\n<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image4-2.png\" alt=\"\" width=\"743\" height=\"290\" class=\"alignnone size-full wp-image-212517\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image4-2.png 743w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2021\/02\/image4-2-300x117.png 300w\" sizes=\"auto, (max-width: 743px) 100vw, 743px\" \/><\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>10\u3001\u9632DDOS\u653b\u51fb<\/strong><\/div>\n<p>\u4e0b\u9762\u89c4\u5219\u5c06\u5e2e\u52a9\u4f60\u9884\u9632Web\u670d\u52a1\u5668\u4e0a\u7684\u62d2\u7edd\u670d\u52a1\uff08DoS\uff09\u653b\u51fb\uff1a<\/p>\n<pre>\r\niptables -A INPUT -p tcp --dport 80 -m limit --limit 25\/minute --limit-burst 100 -j ACCEPT\r\n<\/pre>\n<ul>\n<li>-m limit\uff1a\u4f7f\u7528limit\u6a21\u5757<\/li>\n<li>--limit 25\/minute\uff1a\u6b64\u9650\u5236\u6bcf\u5206\u949f\u6700\u591a25\u4e2a\u8fde\u63a5\u3002\u6839\u636e\u5177\u4f53\u8981\u6c42\u66f4\u6539\u6b64\u503c<\/li>\n<li>--limit-burst 100\uff1a\u8be5\u503c\u8868\u793a\u53ea\u6709\u5728\u8fde\u63a5\u603b\u6570\u8fbe\u5230limit-burst\u7ea7\u522b\u540e\uff0c\u624d\u6267\u884climit 25\/minute\u3002<\/li>\n<\/ul>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>\u603b\u7ed3<\/strong><\/div>\n<p>\u5728\u672c\u6587\u4e2d\u5217\u51fa\u4e86\u4e00\u4e9b\u5b9e\u7528\u7684iptables\u89c4\u5219\uff0c\u53ef\u4ee5\u53c2\u8003\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528\u4e0b\u9762\u51e0\u4e2a\u547d\u4ee4\u53ef\u4ee5\u6e05\u7a7aiptables\u8868\uff1a # \u4f7f\u7528-t\u9009\u9879\u9009\u62e9\u54ea\u4e2a\u8868\uff0c\u8868\u6709filter, nat , ma [&hellip;]<\/p>\n","protected":false},"author":309,"featured_media":212513,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-212512","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/212512","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/309"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=212512"}],"version-history":[{"count":1,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/212512\/revisions"}],"predecessor-version":[{"id":212518,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/212512\/revisions\/212518"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/212513"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=212512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=212512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=212512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}