{"id":4711,"date":"2023-02-21T17:51:12","date_gmt":"2023-02-21T09:51:12","guid":{"rendered":"https:\/\/km94.com\/?p=4711"},"modified":"2023-02-21T17:51:12","modified_gmt":"2023-02-21T09:51:12","slug":"centos7%e5%ae%89%e8%a3%85%e6%95%99%e7%a8%8b%ef%bc%9a%e8%ae%be%e7%bd%aeiptables%e9%98%b2%e7%81%ab%e5%a2%99","status":"publish","type":"post","link":"https:\/\/dy208.cn\/index.php\/2023\/02\/21\/centos7%e5%ae%89%e8%a3%85%e6%95%99%e7%a8%8b%ef%bc%9a%e8%ae%be%e7%bd%aeiptables%e9%98%b2%e7%81%ab%e5%a2%99\/","title":{"rendered":"CentOS7\u5b89\u88c5\u6559\u7a0b\uff1a\u8bbe\u7f6eiptables\u9632\u706b\u5899"},"content":{"rendered":"

\u7ad9\u957f\u90fd\u6e05\u695aCentOS \u662f\u4e00\u4e2a\u57fa\u4e8eRed Hat Linux \u63d0\u4f9b\u7684\u53ef\u81ea\u7531\u4f7f\u7528\u6e90\u4ee3\u7801\u7684\u4f01\u4e1a\u7ea7Linux\u53d1\u884c\u7248\u672c\u3002\u800cCentOS7\u9ed8\u8ba4\u7684\u9632\u706b\u5899\u4e0d\u662fiptables,\u800c\u662ffirewalle\uff0c\u5728\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u9700\u8981\u81ea\u884c\u5b89\u88c5iptables\u9632\u706b\u5899\uff0c\u4e0b\u9762\u6574\u7406\u4e86\u8be6\u7ec6\u6559\u7a0b\u3002<\/p>\n

\n\t

\"centos\u6559\u7a0b\"<\/figure>\n\t<\/p>\n

\u5b89\u88c5iptable iptable-service\uff1a<\/p>\n\n\n<\/colgroup>\n\n\n
\u5148\u68c0\u67e5\u662f\u5426\u5b89\u88c5\u4e86iptables\n

#service iptables status<\/p>\n

\u5b89\u88c5iptables<\/p>\n

#yum install -t iptables<\/p>\n

\u5347\u7ea7iptables<\/p>\n

#yum update iptables<\/p>\n

\u5b89\u88c5iptables-services<\/p>\n

#yum install iptables-services<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u7981\u7528firewalld\u670d\u52a1\uff1a<\/p>\n\n\n<\/colgroup>\n\n\n
\u7981\u7528\/\u505c\u6b62\u81ea\u5e26\u7684firewalld\u670d\u52a1\n

#systemctl stop firewalld<\/p>\n

#systemctl mask firewalld<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u8bbe\u7f6e\u73b0\u6709\u89c4\u5219\uff1a<\/p>\n\n\n<\/colgroup>\n\n\n
\u67e5\u770biptables\u73b0\u6709\u89c4\u5219\n

#iptables -L -n<\/p>\n

\u5148\u5141\u8bb8\u6240\u6709\uff0c\u9632\u6b62\u540e\u9762\u64cd\u4f5c\u51fa\u73b0\u9519\u8bef<\/p>\n

#iptables -P INPUT ACCEPT<\/p>\n

\u6e05\u7a7a\u6240\u6709\u9ed8\u8ba4\u89c4\u5219<\/p>\n

#iptables -F<\/p>\n

\u6e05\u7a7a\u6240\u6709\u81ea\u5b9a\u4e49\u89c4\u5219<\/p>\n

#iptables -Z<\/p>\n

\u5141\u8bb8\u6765\u81ea\u4e0elo\u63a5\u53e3\u7684\u6570\u636e\u5305\uff08\u672c\u5730\u8bbf\u95ee\uff09<\/p>\n

#iptables -A INPUT -i lo -j ACCEPT<\/p>\n

\u5f00\u653e22\u7aef\u53e3<\/p>\n

#iptables -A INPUT -p tcp –dport 22 -j ACCEPT<\/p>\n

\u5f00\u653e21\u7aef\u53e3\uff08FTP\uff09<\/p>\n

#iptables -A INPUT -p tcp –dport 21 -j ACCEPT<\/p>\n

\u5f00\u653e80\u7aef\u53e3\uff08HTTP\uff09<\/p>\n

#iptables -A INPUT -p tcp –dport 80 -j ACCEPT<\/p>\n

\u5f00\u653e443\u7aef\u53e3\uff08HTTPS\uff09<\/p>\n

#iptables -A INPUT -p tcp –dport 443 -j ACCEPT<\/p>\n

\u5141\u8bb8ping<\/p>\n

#iptables -A INPUT -p icmp –icmp-type 8 -j ACCEPT<\/p>\n

\u5141\u8bb8\u63a5\u6536\u672c\u673a\u8bf7\u6c42\u4e4b\u540e\u7684\u8fd4\u56de\u6570\u636eRELATED\uff0c\u662f\u4e3aFTP\u8bbe\u7f6e\u7684<\/p>\n

#iptables -A INPUT -m state –state RELATED,ESTABLSHED -j ACCEPT<\/p>\n

\u5176\u4ed6\u5165\u7ad9\u4e00\u5f8b\u4e22\u5f03<\/p>\n

#iptables -P INPUT DROP<\/p>\n

\u8bbe\u7f6e\u51fa\u7ad9\u5141\u8bb8\u89c4\u5219<\/p>\n

#iptables -P INPUT ACCEPT<\/p>\n

\u6240\u6709\u8f6c\u53d1\u4e00\u5f8b\u4e22\u5f03<\/p>\n

#iptables -P FORWARD DROP<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5176\u4ed6\u89c4\u5219\u8bbe\u5b9a\uff1a<\/p>\n\n\n<\/colgroup>\n\n\n
\u5982\u679c\u8981\u6dfb\u52a0\u5185\u7f51ip\u65b0\u4eba\uff08\u63a5\u6536\u5176\u6240\u6709TCP\u8bf7\u6c42\uff09\n

#iptables -A INPUT -p tcp -s 192.168.0.1 -j ACCEPT<\/p>\n

\u8fc7\u6ee4\u6240\u6709\u975e\u4ee5\u4e0a\u89c4\u5219\u7684\u8bf7\u6c42<\/p>\n

#iptables -P INPUT DROP<\/p>\n

\u8981\u5c01\u505c\u4e00\u4e2aIP\uff0c\u4f7f\u7528\u4e0b\u9762\u547d\u4ee4\uff1a<\/p>\n

#iptables -I INPUT -s ***.***.***.*** -j DROP<\/p>\n

\u8981\u89e3\u5c01\u4e00\u4e2aIP\uff0c\u4f7f\u7528\u4e0b\u9762\u8fd9\u6761\u547d\u4ee4\uff1a<\/p>\n

#iptables -D INPUT -s ***.***.***.*** -j DROP<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4fdd\u5b58\u89c4\u5219\u8bbe\u5b9a\uff1a<\/p>\n\n\n<\/colgroup>\n\n\n
\u4fdd\u5b58\u4e0a\u8ff0\u89c4\u5219\n

#service iptables save<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5f00\u542fiptables\u670d\u52a1\uff1a<\/p>\n\n\n<\/colgroup>\n\n\n
#systemctl start iptables.service\n

\u67e5\u770b\u72b6\u6001<\/p>\n

#systemctl status iptables.service<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u89e3\u51b3vsftpd\u5728iptables\u5f00\u542f\u540e\uff0c\u65e0\u6cd5\u4f7f\u7528\u88ab\u52a8\u6a21\u5f0f\u7684\u95ee\u9898<\/p>\n

\u9996\u5148\u5728\/etc\/sysconfig\/iptables-config\u4e2d\u4fee\u6539\u6216\u8005\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n\n\n<\/colgroup>\n\n\n
\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff0c\u6ce8\u610f\u987a\u5e8f\u4e0d\u80fd\u8c03\u6362\n

IPTABLES_MODULE=\u201cip_conntrack_ftp\u201d<\/p>\n

IPTABLES_MODULES=\u201cip_nat_ftp\u201d<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u91cd\u65b0\u8bbe\u7f6eiptables\u8bbe\u7f6e\uff1a<\/p>\n\n\n<\/colgroup>\n\n\n
#iptables -A INPUT -m state –state RELATED,ESTABLISHED -j ACCEPT<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4ee5\u4e0b\u4e3a\u5b8c\u6574\u8bbe\u7f6e\u811a\u672c<\/p>\n\n\n<\/colgroup>\n\n\n
#!\/bin\/sh\n

iptables -P INPUT ACCEPT<\/p>\n

iptables -F<\/p>\n

iptables -X<\/p>\n

iptables -Z<\/p>\n

iptables -A INPUT -i lo -j ACCEPT<\/p>\n

iptables -A INPUT -p tcp –dport 22 -j ACCEPT<\/p>\n

iptables -A INPUT -p tcp –dport 21 -j ACCEPT<\/p>\n

iptables -A INPUT -p tcp –dport 80 -j ACCEPT<\/p>\n

iptables -A INPUT -p tcp –dport 443 -j ACCEPT<\/p>\n

iptables -A INPUT -p icmp –icmp-type 8 -j ACCEPT<\/p>\n

iptables -A INPUT -m state –state RELATED,ESTABLISHED -j ACCEPT<\/p>\n

iptables -P INPUT DROP<\/p>\n

iptables -P OUTPUT ACCEPT<\/p>\n

iptables -P FORWARD DROP<\/p>\n

service iptables save<\/p>\n

systemctl restart iptables.service<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4ee5\u4e0a\u5c31\u662fCentOS7\u5b89\u88c5iptables\u9632\u706b\u5899\u6559\u7a0b\u5168\u9762\u4ecb\u7ecd\uff0c\u5927\u5bb6\u53ef\u4ee5\u53c2\u8003\u4e0a\u9762\u7684\u65b9\u6cd5\uff0c\u540e\u671f\u5c0f\u7f16\u4e5f\u4f1a\u7ee7\u7eed\u4e3a\u5927\u5bb6\u5206\u4eab\u5efa\u7ad9\u6559\u7a0b\u3002<\/p>\n\n

\n
\n\n\n\n<\/div>\n
\n\n\n\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

\u7ad9\u957f\u90fd\u6e05\u695aCentOS \u662f\u4e00\u4e2a\u57fa\u4e8eRed Hat Linux \u63d0\u4f9b\u7684\u53ef\u81ea\u7531\u4f7f\u7528\u6e90\u4ee3\u7801\u7684\u4f01\u4e1a\u7ea7Linux\u53d1\u884c\u7248\u672c…<\/p>\n","protected":false},"author":1,"featured_media":4712,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34,2],"tags":[],"class_list":["post-4711","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-web","category-jc","entry"],"_links":{"self":[{"href":"https:\/\/dy208.cn\/index.php\/wp-json\/wp\/v2\/posts\/4711","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dy208.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dy208.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dy208.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dy208.cn\/index.php\/wp-json\/wp\/v2\/comments?post=4711"}],"version-history":[{"count":0,"href":"https:\/\/dy208.cn\/index.php\/wp-json\/wp\/v2\/posts\/4711\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dy208.cn\/index.php\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/dy208.cn\/index.php\/wp-json\/wp\/v2\/media?parent=4711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dy208.cn\/index.php\/wp-json\/wp\/v2\/categories?post=4711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dy208.cn\/index.php\/wp-json\/wp\/v2\/tags?post=4711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}