{"id":418,"date":"2023-04-26T23:43:32","date_gmt":"2023-04-26T15:43:32","guid":{"rendered":"http:\/\/mapleleaf666.vip\/?p=418"},"modified":"2023-11-30T14:48:04","modified_gmt":"2023-11-30T06:48:04","slug":"linux%e4%bd%bf%e7%94%a8ufw-iptables%e5%ae%9e%e7%8e%b0%e7%ab%af%e5%8f%a3%e6%98%a0%e5%b0%84","status":"publish","type":"post","link":"http:\/\/mapleleaf666.vip\/?p=418","title":{"rendered":"Linux\u4f7f\u7528ufw\/iptables\u5b9e\u73b0\u7aef\u53e3\u6620\u5c04"},"content":{"rendered":"\n

\u7531\u4e8e\u6700\u8fd1\u7684\u9879\u76ee\u9700\u8981\uff0c\u8981\u5b9e\u73b0\u7aef\u53e3\u7684\u6620\u5c04\uff0c\u901a\u8fc7\u516c\u7f51IP\u8bbf\u95ee\u670d\u52a1\u5668\u7684\u5185\u7f51\u63d0\u4f9b\u7684\u670d\u52a1\uff0c\u56e0\u6b64\u5199\u4e0b\u8be5\u6587\u7ae0\u8bb0\u5f55\u6574\u4e2a\u8fc7\u7a0b\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u6211\u5c1d\u8bd5\u4e86\u5982\u4f55\u914d\u7f6eiptables\uff0c\u7ed3\u679c\u53d1\u73b0\u670d\u52a1\u5668\u7528\u7684\u662fufw\u5b9e\u73b0linux\u670d\u52a1\u5668\u7684\u9632\u706b\u5899\uff0c\u53c8\u8f6c\u800c\u53bb\u914d\u7f6eufw\u7684\u8f6c\u53d1\u3002\u4e5f\u56e0\u6b64\u6587\u7ae0\u4e2d\u4e24\u79cd\u65b9\u6cd5\u90fd\u4f1a\u8bb0\u5f55\uff0c\u4f46\u662f\u4e00\u5b9a\u8bb0\u5f97\u5728\u5b9e\u73b0\u7aef\u53e3\u6620\u5c04\u7684\u65f6\u5019\uff0c\u4e00\u5b9a\u8981\u6ce8\u610f\u81ea\u5df1\u7684\u670d\u52a1\u5668\u7528\u7684\u662f\u54ea\u79cd\u65b9\u5f0f<\/strong>\uff01\uff01\uff01<\/p>\n\n\n\n

\u5141\u8bb8\u670d\u52a1\u5668\u8fdb\u884c\u8f6c\u53d1<\/h2>\n\n\n\n

\u9996\u5148\u662f\u57fa\u7840\u914d\u7f6e\uff0c\u8fd9\u91cc\u4e24\u79cd\u65b9\u6cd5\u4f7f\u7528\u7684\u64cd\u4f5c\u90fd\u662f\u4e00\u6837\u7684\u3002\u9700\u8981\u5f00\u542flinux\u7684\u6570\u636e\u8f6c\u53d1\u529f\u80fd\u3002\u901a\u8fc7\u547d\u4ee4<\/p>\n\n\n\n

vim \/etc\/sysctl.conf<\/code><\/pre>\n\n\n\n
\u5728\u91cc\u9762\u6dfb\u52a0\u4e00\u884c\uff1a<\/p>\n\n\n\n
net.ipv4.ip_forward=1<\/code><\/pre>\n\n\n\n
\u4fdd\u5b58\u9000\u51fa\u540e\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f7f\u5176\u751f\u6548\uff1a<\/p>\n\n\n\n
sysctl -p<\/code><\/pre>\n\n\n\n
\u5982\u679c\u60f3\u8981\u68c0\u67e5\uff0c\u8fd8\u53ef\u4ee5\u76f4\u63a5\u67e5\u770b\/proc\/sys\/net\/ipv4\/ip_forward<\/code>\u7684\u5185\u5bb9\uff0c\u5982\u679c\u662f1\u8868\u793a\u8bbe\u7f6e\u6210\u529f\u751f\u6548\u3002<\/p>\n\n\n\n
\u4f7f\u7528iptables\u5b9e\u73b0\u7aef\u53e3\u6620\u5c04<\/h2>\n\n\n\n
\u901a\u8fc7\u4fee\u6539iptables\u53ef\u4ee5\u5b9e\u73b0NAT\u6620\u5c04\u529f\u80fd\uff0c\u4e3e\u4f8b\u6765\u8bf4\uff0c\u5982\u679c\u8981\u8bbf\u95ee\u7684\u5b9e\u9645\u670d\u52a1\u4e3a\u5185\u7f51192.168.0.2\u7684\u7aef\u53e3\u53f7\u4e3a9000\u7684\u670d\u52a1\uff0c\u4f46\u662f\u9700\u8981\u901a\u8fc7\u516c\u7f51IP123.123.123.123\uff0c\u7aef\u53e3\u53f719000\u8bbf\u95ee\uff0c\u5219\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u5b9e\u73b0\u7aef\u53e3\u6620\u5c04\uff1a<\/p>\n\n\n\n
iptables -t nat -A PREROUTING -d 123.123.123.123 -p tcp --dport 19000 -j DNAT --to-destination 192.168.0.2:9000<\/code><\/pre>\n\n\n\n
\u4e0a\u8ff0\u547d\u4ee4\u662f\u5c06192.168.0.2:9000\u7684\u670d\u52a1\u6620\u5c04\u5230\u4e86\u516c\u7f51\u7684123.123.123.123:19000\u4e0a\u3002\u6bcf\u4e2a\u6620\u5c04\u53d1\u90fd\u9700\u8981\u6dfb\u52a0\u4e00\u6761\uff0c\u5728\u5b8c\u6210\u914d\u7f6e\u540e\uff0c\u901a\u8fc7\u4e0b\u8ff0\u547d\u4ee4\u4fdd\u5b58\uff1a<\/p>\n\n\n\n
iptables-save -t nat<\/code><\/pre>\n\n\n\n
\u4fdd\u5b58\u7684\u7ed3\u679c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\uff1a<\/p>\n\n\n\n
iptables -t nat --list<\/code><\/pre>\n\n\n\n
\u5982\u679c\u6709\u9700\u8981\u5220\u9664\u7684\u5217\u8868\u4fe1\u606f\uff0c\u5219\u7528\u4ee5\u4e0b\u547d\u4ee4\u5220\u9664\uff1a\uff08\u4e00\u5b9a\u8981\u614e\u91cd\u5220\u9664\uff0c\u65e0\u6cd5\u6062\u590d\uff09<\/p>\n\n\n\n
iptables -t nat -D PREROUTING 1    \/\/\u5e8f\u53f7\u4ece1 \u5f00\u59cb\uff0c\u540e\u8fb9\u4ee5\u6b64+1.<\/code><\/pre>\n\n\n\n
\u7531\u4e8e\u6211\u7684\u670d\u52a1\u5668\u4e0a\u4f7f\u7528\u7684\u4e0d\u662fiptables\u7684\u670d\u52a1\uff0c\u6240\u4ee5\u6ca1\u6cd5\u9a8c\u8bc1\u4e0b\u8ff0\u64cd\u4f5c\u7684\u53ef\u884c\u6027\uff0c\u4f46\u662f\u5982\u679c\u662f\u4f7f\u7528\u4e86iptables\u670d\u52a1\u7684\u670d\u52a1\u5668\uff0c\u5e94\u8be5\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u4fdd\u5b58\u8bbe\u7f6e\u5e76\u91cd\u542f\u670d\u52a1\uff1a<\/p>\n\n\n\n
service iptables save\r\nservice iptables restart<\/code><\/pre>\n\n\n\n
\u4f7f\u7528ufw\u5b9e\u73b0\u7aef\u53e3\u6620\u5c04<\/h2>\n\n\n\n
\u9996\u5148\u9700\u8981\u4fee\u6539\/etc\/default\/ufw\uff0c\u6dfb\u52a0\u5982\u4e0b\u5185\u5bb9\uff1a<\/p>\n\n\n\n
DEFAULT_FORWARD_POLICY=\"ACCEPT\"<\/code><\/pre>\n\n\n\n
\u7136\u540e\u5728\/etc\/ufw\/before.rules\u4e2d\uff0c\u5728 *filter \u4e4b\u524d\uff0c\u52a0\u5165\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n\n\n\n
*nat\r\n:PREROUTING - [0:0]\r\n-A PREROUTING -i eth0 -p tcp --dport \u516c\u7f51\u6620\u5c04\u7aef\u53e3 -j DNAT --to-destination  \u5185\u7f51IP:\u5185\u7f51\u670d\u52a1\u7aef\u53e3\r\n-A POSTROUTING -j MASQUERADE\r\nCOMMIT<\/code><\/pre>\n\n\n\n
\u9700\u8981\u6ce8\u610f\u4e0a\u9762\u7684eth0\u662f\u8bbe\u5907\u7684\u7f51\u5361\u540d\u79f0\uff0c\u9700\u8981\u7528ifconfig\u6765\u786e\u5b9a\u3002dport\u540e\u7684\u503c\u4fbf\u662f\u76d1\u542c\u7684\u516c\u7f51\u7aef\u53e3\u3002<\/p>\n\n\n\n
\u6dfb\u52a0\u5b8c\u4e0a\u8ff0\u5185\u5bb9\u540e\uff0c\u9700\u8981\u5bf9\u6bcf\u4e2a\u76d1\u542c\u7684\u7aef\u53e3\uff08\u516c\u7f51\u6620\u5c04\u7684\u7aef\u53e3\uff09\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n\n\n\n
sudo ufw allow from any to any port xxxxx<\/code><\/pre>\n\n\n\n
\u6700\u540e\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u91cd\u542f\u670d\u52a1<\/p>\n\n\n\n
sudo ufw reload\n\nsudo ufw enable \/\/\u6ca1\u542f\u52a8\u5219\u4f7f\u7528\u8be5\u547d\u4ee4\uff0c\u5426\u5219\u4e0d\u7528\u4f7f\u7528<\/code><\/pre>\n\n\n\n
\u81f3\u6b64\uff0c\u7aef\u53e3\u6620\u5c04\u6210\u529f\u5b9e\u73b0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u7531\u4e8e\u6700\u8fd1\u7684\u9879\u76ee\u9700\u8981\uff0c\u8981\u5b9e\u73b0\u7aef\u53e3\u7684\u6620\u5c04\uff0c\u901a\u8fc7\u516c\u7f51IP\u8bbf\u95ee\u670d\u52a1\u5668\u7684\u5185\u7f51\u63d0\u4f9b\u7684\u670d\u52a1\uff0c\u56e0\u6b64\u5199\u4e0b\u8be5\u6587\u7ae0\u8bb0\u5f55\u6574\u4e2a\u8fc7\u7a0b\u3002\u5728\u8fd9 […]<\/p>\n","protected":false},"author":1,"featured_media":504,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[28,21],"class_list":["post-418","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-summary","tag-computer-network","tag-deployment"],"_links":{"self":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts\/418","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=418"}],"version-history":[{"count":1,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts\/418\/revisions"}],"predecessor-version":[{"id":419,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts\/418\/revisions\/419"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/media\/504"}],"wp:attachment":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=418"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}