{"id":2989,"date":"2012-04-20T13:26:32","date_gmt":"2012-04-20T05:26:32","guid":{"rendered":"http:\/\/jpuyy.com\/?p=2989"},"modified":"2014-11-06T17:45:15","modified_gmt":"2014-11-06T09:45:15","slug":"iptables-transparent-proxying","status":"publish","type":"post","link":"https:\/\/jpuyy.com\/?p=2989","title":{"rendered":"iptables\u4e4b\u900f\u660e\u4ee3\u7406Transparent Proxying"},"content":{"rendered":"<p>\u6765\u81ea\u4e8e<\/p>\n<p>Linux iptables Pocket Reference<\/p>\n<p>\u900f\u660e\u4ee3\u7406\u662f\u4e00\u79cd\u622a\u83b7\u6307\u5b9a\u5411\u5916\u8fde\u63a5\u5e76\u8f6c\u5411\u4e00\u53f0\u53ef\u4ee5\u8fbe\u5230\u672c\u6765\u8fde\u63a5\u76ee\u7684\u8fde\u63a5\u7684\u4e00\u79cd\u65b9\u5f0f\uff0c\u8fd9\u79cd\u6280\u672f\u53ef\u4ee5\u4f7f\u4f60\u53ea\u8bbe\u7f6e\u4ee3\u7406\u670d\u52a1\uff0c\u800c\u4e0d\u7528\u7ed9\u5185\u7f51\u7684\u6bcf\u4e00\u53f0\u7535\u8111\u8bbe\u7f6e\u8bbf\u95ee\u65b9\u5f0f\u3002<\/p>\n<p>\u56e0\u4e3a\u6240\u6709\u8bbf\u95ee\u5916\u90e8\u7684\u6d41\u91cf\u90fd\u7ecf\u8fc7\u7f51\u5173\uff0c\u6240\u4ee5\u6240\u6709\u7684\u5411\u5916\u8fde\u63a5\u901a\u8fc7\u7aef\u53e3\u90fd\u662f\u900f\u660e\u7684\u3002<\/p>\n<p>\u5982\u679c\u4f60\u5728\u9632\u706b\u5899\u76d1\u542c\u4e86\u4e00\u4e2aHTTP\u4ee3\u7406\uff0c\u7aef\u53e38888\uff0c\u4f8b\u5982Squid\uff0c\u4f60\u53ef\u4ee5\u6dfb\u52a0\u8fd9\u6837\u4e00\u6761\u8f6c\u51fa\u89c4\u5219\uff1a<\/p>\n<pre>iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 8888<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>iptables\u505a\u7f51\u5173\uff0c\u9488\u5bf9\u7aef\u53e3\u7ea7\u522b\u7684\u505a\u8f6c\u53d1\uff0c\u7f51\u5173ip\u4e3a{gateway}<\/p>\n<pre>-A PREROUTING -d {gateway}\/32 -p tcp -m tcp --dport 8989 -j DNAT --to-destination 192.168.1.2:9200 \r\n-A POSTROUTING -s 192.168.1.2\/32 -o eth1 -p tcp -j SNAT --to-source {gateway}:8989 <\/pre>\n<p>\u591a\u4e2a\u7aef\u53e3\u4e00\u5bf9\u4e00\u6620\u5c04<\/p>\n<pre>\r\n{gateway}8989 <-> {lan_ip}:9200\r\n{gateway}8990 <-> {lan_ip}:9300\r\n\r\n-A PREROUTING  -d {gateway}\/32 -p tcp -m tcp --dport 8989 -j DNAT --to-destination {lan_ip}:9200 \r\n-A PREROUTING  -d {gateway}\/32 -p tcp -m tcp --dport 8990 -j DNAT --to-destination {lan_ip}:9300 \r\n-A POSTROUTING -s {lan_ip}\/32 -o eth1 -p tcp -m tcp --dport 9200 -j SNAT --to-source {gateway}:8989 \r\n-A POSTROUTING -s {lan_ip}\/32 -o eth1 -p tcp -m tcp --dport 9300 -j SNAT --to-source {gateway}:8990<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6765\u81ea\u4e8e Linux iptables Pocket Reference \u900f\u660e\u4ee3\u7406\u662f\u4e00\u79cd\u622a\u83b7\u6307\u5b9a\u5411\u5916\u8fde\u63a5\u5e76\u8f6c\u5411\u4e00\u53f0\u53ef\u4ee5\u8fbe\u5230\u672c\u6765\u8fde\u63a5\u76ee\u7684\u8fde\u63a5\u7684\u4e00\u79cd\u65b9\u5f0f\uff0c\u8fd9\u79cd\u6280\u672f\u53ef\u4ee5\u4f7f\u4f60\u53ea\u8bbe\u7f6e\u4ee3\u7406\u670d\u52a1\uff0c\u800c\u4e0d\u7528\u7ed9\u5185\u7f51\u7684\u6bcf\u4e00\u53f0\u7535\u8111\u8bbe\u7f6e\u8bbf\u95ee\u65b9\u5f0f\u3002 \u56e0\u4e3a\u6240\u6709\u8bbf\u95ee\u5916\u90e8\u7684\u6d41\u91cf\u90fd\u7ecf\u8fc7\u7f51\u5173\uff0c\u6240\u4ee5\u6240\u6709\u7684\u5411\u5916\u8fde\u63a5\u901a\u8fc7\u7aef\u53e3\u90fd\u662f\u900f\u660e\u7684\u3002 \u5982\u679c\u4f60\u5728\u9632\u706b\u5899\u76d1\u542c\u4e86\u4e00\u4e2aHTTP\u4ee3\u7406\uff0c\u7aef\u53e38888\uff0c\u4f8b\u5982Squid\uff0c\u4f60\u53ef\u4ee5\u6dfb\u52a0\u8fd9\u6837\u4e00\u6761\u8f6c\u51fa\u89c4\u5219\uff1a iptables -t nat -A PREROUTING -i eth0 -p tcp &#8211;dport 80 -j REDIRECT &#8211;to-port 8888 &nbsp; &nbsp; iptables\u505a\u7f51\u5173\uff0c\u9488\u5bf9\u7aef\u53e3\u7ea7\u522b\u7684\u505a\u8f6c\u53d1\uff0c\u7f51\u5173ip\u4e3a{gateway} -A PREROUTING -d {gateway}\/32 -p tcp -m tcp &#8211;dport 8989 -j DNAT &#8211;to-destination 192.168.1.2:9200 -A POSTROUTING -s 192.168.1.2\/32 -o eth1 -p tcp -j SNAT &#8211;to-source {gateway}:8989 \u591a\u4e2a\u7aef\u53e3\u4e00\u5bf9\u4e00\u6620\u5c04 {gateway}8989 {lan_ip}:9200 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[92],"tags":[23],"class_list":["post-2989","post","type-post","status-publish","format-standard","hentry","category-iptables","tag-summary"],"_links":{"self":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/2989","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=2989"}],"version-history":[{"count":7,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/2989\/revisions"}],"predecessor-version":[{"id":6815,"href":"https:\/\/jpuyy.com\/index.php?rest_route=\/wp\/v2\/posts\/2989\/revisions\/6815"}],"wp:attachment":[{"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jpuyy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}