{"id":44088,"date":"2024-10-06T12:45:14","date_gmt":"2024-10-06T04:45:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/44088\/"},"modified":"2024-10-06T12:45:14","modified_gmt":"2024-10-06T04:45:14","slug":"centos-%e5%95%9f%e7%94%a8-iptables-%e9%98%b2%e7%81%ab%e7%89%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/44088\/","title":{"rendered":"CentOS \u555f\u7528 iptables \u9632\u706b\u7246"},"content":{"rendered":"

CentOS \u555f\u7528 iptables \u9632\u706b\u7246<\/h1>\n

\u5728\u7576\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u5b89\u5168\u6027\u662f\u6bcf\u500b\u4f3a\u670d\u5668\u7ba1\u7406\u54e1\u5fc5\u9808\u91cd\u8996\u7684\u554f\u984c\u3002CentOS \u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684 Linux \u767c\u884c\u7248\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u9632\u706b\u7246\u5de5\u5177\u2014\u2014iptables\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728 CentOS \u4e0a\u555f\u7528\u548c\u914d\u7f6e iptables \u9632\u706b\u7246\uff0c\u4ee5\u4fdd\u8b77\u4f3a\u670d\u5668\u514d\u53d7\u672a\u7d93\u6388\u6b0a\u7684\u8a2a\u554f\u3002<\/p>\n

\u4ec0\u9ebc\u662f iptables\uff1f<\/h2>\n

iptables \u662f Linux \u7cfb\u7d71\u4e2d\u7684\u4e00\u500b\u7528\u65bc\u8a2d\u7f6e\u3001\u7dad\u8b77\u548c\u6aa2\u67e5 IP \u6578\u64da\u5305\u904e\u6ffe\u898f\u5247\u7684\u5de5\u5177\u3002\u5b83\u5141\u8a31\u7528\u6236\u5b9a\u7fa9\u54ea\u4e9b\u6d41\u91cf\u53ef\u4ee5\u9032\u5165\u6216\u96e2\u958b\u4f3a\u670d\u5668\uff0c\u5f9e\u800c\u589e\u5f37\u7cfb\u7d71\u7684\u5b89\u5168\u6027\u3002iptables \u7684\u9748\u6d3b\u6027\u4f7f\u5176\u6210\u70ba\u8a31\u591a\u4f3a\u670d\u5668\u7ba1\u7406\u54e1\u7684\u9996\u9078\u9632\u706b\u7246\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

\u5b89\u88dd iptables<\/h2>\n

\u5728\u5927\u591a\u6578 CentOS \u7cfb\u7d71\u4e2d\uff0ciptables \u901a\u5e38\u9810\u88dd\u3002\u5982\u679c\u9700\u8981\u5b89\u88dd\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n

sudo yum install iptables<\/code><\/pre>\n
\u555f\u7528 iptables<\/h2>\n
\u8981\u555f\u7528 iptables\uff0c\u9996\u5148\u9700\u8981\u78ba\u4fdd\u670d\u52d9\u6b63\u5728\u904b\u884c\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u555f\u52d5 iptables \u670d\u52d9\uff1a<\/p>\n
sudo systemctl start iptables<\/code><\/pre>\n
\u70ba\u4e86\u78ba\u4fdd iptables \u5728\u7cfb\u7d71\u555f\u52d5\u6642\u81ea\u52d5\u555f\u52d5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
sudo systemctl enable iptables<\/code><\/pre>\n
\u914d\u7f6e iptables \u898f\u5247<\/h2>\n
iptables \u7684\u914d\u7f6e\u662f\u901a\u904e\u6dfb\u52a0\u898f\u5247\u4f86\u5be6\u73fe\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u898f\u5247\u793a\u4f8b\uff1a<\/p>\n
\u5141\u8a31 SSH \u9023\u63a5<\/h3>\n
\u5982\u679c\u60a8\u5e0c\u671b\u5141\u8a31 SSH \u9023\u63a5\uff08\u901a\u5e38\u4f7f\u7528\u7aef\u53e3 22\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
sudo iptables -A INPUT -p tcp --dport 22 -j ACCEPT<\/code><\/pre>\n
\u62d2\u7d55\u6240\u6709\u5176\u4ed6\u9023\u63a5<\/h3>\n
\u70ba\u4e86\u63d0\u9ad8\u5b89\u5168\u6027\uff0c\u60a8\u53ef\u4ee5\u9078\u64c7\u62d2\u7d55\u6240\u6709\u5176\u4ed6\u9032\u5165\u7684\u9023\u63a5\uff1a<\/p>\n
sudo iptables -A INPUT -j DROP<\/code><\/pre>\n
\u4fdd\u5b58 iptables \u898f\u5247<\/h3>\n
\u914d\u7f6e\u5b8c\u6210\u5f8c\uff0c\u60a8\u9700\u8981\u4fdd\u5b58\u898f\u5247\uff0c\u4ee5\u4fbf\u5728\u91cd\u555f\u5f8c\u4ecd\u7136\u6709\u6548\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4fdd\u5b58\u898f\u5247\uff1a<\/p>\n
sudo service iptables save<\/code><\/pre>\n
\u6aa2\u67e5 iptables \u898f\u5247<\/h2>\n
\u8981\u67e5\u770b\u7576\u524d\u7684 iptables \u898f\u5247\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
sudo iptables -L -n -v<\/code><\/pre>\n
\u9019\u5c07\u986f\u793a\u6240\u6709\u7576\u524d\u7684\u898f\u5247\u53ca\u5176\u8a08\u6578\u4fe1\u606f\uff0c\u5e6b\u52a9\u60a8\u4e86\u89e3\u6d41\u91cf\u7684\u8655\u7406\u60c5\u6cc1\u3002<\/p>\n
\u5e38\u898b\u554f\u984c<\/h2>\n
\u5982\u4f55\u522a\u9664 iptables \u898f\u5247\uff1f<\/h3>\n
\u5982\u679c\u9700\u8981\u522a\u9664\u67d0\u500b\u7279\u5b9a\u7684\u898f\u5247\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
sudo iptables -D INPUT -p tcp --dport 22 -j ACCEPT<\/code><\/pre>\n
\u5982\u4f55\u91cd\u7f6e iptables \u898f\u5247\uff1f<\/h3>\n
\u5982\u679c\u60a8\u5e0c\u671b\u91cd\u7f6e\u6240\u6709\u898f\u5247\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
sudo iptables -F<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
iptables \u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9 CentOS \u7528\u6236\u4fdd\u8b77\u4f3a\u670d\u5668\u514d\u53d7\u6f5b\u5728\u7684\u5b89\u5168\u5a01\u8105\u3002\u901a\u904e\u6b63\u78ba\u7684\u914d\u7f6e\u548c\u7ba1\u7406\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u63a7\u5236\u9032\u51fa\u4f3a\u670d\u5668\u7684\u6d41\u91cf\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u5b89\u5168\u6027\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 \u9999\u6e2f VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u500b\u4eba\u9805\u76ee\u9084\u662f\u5546\u696d\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 \u4f3a\u670d\u5668<\/a> \u90fd\u662f\u78ba\u4fdd\u5b89\u5168\u548c\u6027\u80fd\u7684\u95dc\u9375\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728 CentOS \u4e0a\u555f\u7528 iptables \u9632\u706b\u7246\uff0c\u4fdd\u8b77\u7cfb\u7d71\u5b89\u5168\uff0c\u7ba1\u7406\u7db2\u8def\u6d41\u91cf\uff0c\u78ba\u4fdd\u8cc7\u6599\u5b89\u5168\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-44088","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44088","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=44088"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44088\/revisions"}],"predecessor-version":[{"id":44089,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44088\/revisions\/44089"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=44088"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=44088"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=44088"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}