{"id":317,"date":"2021-01-02T13:28:15","date_gmt":"2021-01-02T05:28:15","guid":{"rendered":"http:\/\/blog.yzmedu.com\/?p=317"},"modified":"2021-01-17T21:01:58","modified_gmt":"2021-01-17T13:01:58","slug":"centos8%e4%b8%8biptables%e5%b8%b8%e7%94%a8%e9%85%8d%e7%bd%ae%e9%80%82%e5%90%88%e4%b8%ad%e5%b0%8f%e5%be%ae%e4%bc%81%e4%b8%9a","status":"publish","type":"post","link":"http:\/\/blog.yzmedu.com\/?p=317","title":{"rendered":"CentOS8\u4e0bIptables\u5e38\u7528\u914d\u7f6e(\u9002\u5408\u4e2d\u5c0f\u5fae\u4f01\u4e1a)"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

\u4e00.\u5141\u8bb8lo\u56de\u73af\u63a5\u53e3\u7684\u901a\u8baf
<\/strong>iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT<\/p>\n\n\n\n

\u4e8c.\u8bbe\u7f6e22\u53f7\u7aef\u53e3\u89c4\u5219
<\/strong>iptables -A INPUT -p tcp –dport 22 -i eth0 -m state –state NEW -m recent –update –seconds 10 –hitcount 2 -j DROP
iptables -A INPUT -p tcp –dport 22 -i eth0 -m state –state NEW -m recent –set<\/p>\n\n\n\n

\u4e09.\u5141\u8bb8\u7684\u7aef\u53e3
<\/strong>iptables -A INPUT -p tcp –dport 22 -j ACCEPT
iptables -A INPUT -p tcp –dport 80 -j ACCEPT
iptables -A INPUT -p tcp –dport 443 -j ACCEPT<\/p>\n\n\n\n

\u56db.\u8bbe\u7f6e\u9ed8\u8ba4\u7b56\u7565
<\/strong>iptables -P INPUT DROP
iptables -P OUTPUT ACCEPT
iptables -P FORWARD DROP<\/p>\n\n\n\n

\u8fd9\u4e9b\u662f\u57fa\u672c\u5e38\u7528\u914d\u7f6e\uff0c\u5f53\u7136\u5176\u4ed6\u7684\u6309\u9700\u8bbe\u7f6e\u5373\u53ef\u3002<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u4e94.\u8be6\u7ec6\u7684\u9632\u706b\u5899\u77e5\u8bc6\u4f53\u7cfb\u53ef\u53ef\u53c2\u8003\u4e00\u4e0b\u6211\u4eb2\u81ea\u5f55\u5236\u7684\u4e24\u95e8CentOS8\u9632\u706b\u5899\u5546\u4e1a\u5b9e\u64cd\u8bfe\u7a0b\uff1a<\/strong><\/p>\n\n\n\n

1.CentOS8\u670d\u52a1\u5668\u5b89\u5168\u57fa\u7840\u7bc7\/\u5168\u56fd\u72ec\u5bb6\u6253\u9020<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

http:\/\/www.yzmedu.com\/course\/394<\/a><\/p>\n\n\n\n

2.CentOS8\u670d\u52a1\u5668\u5b89\u5168\u9ad8\u7ea7\u7bc7\/\u5168\u56fd\u72ec\u5bb6\u6253\u9020<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

http:\/\/www.yzmedu.com\/course\/395<\/a><\/p>\n\n\n\n

\u611f\u8c22\u5927\u5bb6\u5bf9\u4e91\u77e5\u68a6\u7684\u652f\u6301\u4e0e\u8ba4\u53ef\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u7528\uff01\uff01\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00.\u5141\u8bb8lo\u56de\u73af\u63a5\u53e3\u7684\u901a\u8bafiptables -A INPUT -i lo -j ACCEPTiptables […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[11,45],"_links":{"self":[{"href":"http:\/\/blog.yzmedu.com\/index.php?rest_route=\/wp\/v2\/posts\/317"}],"collection":[{"href":"http:\/\/blog.yzmedu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.yzmedu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.yzmedu.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.yzmedu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=317"}],"version-history":[{"count":3,"href":"http:\/\/blog.yzmedu.com\/index.php?rest_route=\/wp\/v2\/posts\/317\/revisions"}],"predecessor-version":[{"id":438,"href":"http:\/\/blog.yzmedu.com\/index.php?rest_route=\/wp\/v2\/posts\/317\/revisions\/438"}],"wp:attachment":[{"href":"http:\/\/blog.yzmedu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.yzmedu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=317"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.yzmedu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}