\u73b0\u5728\u6211\u4eec\u5df2\u7ecf\u638c\u63e1\u4e86\u57fa\u7840\u77e5\u8bc6,\u8ba9\u6211\u4eec\u63a2\u7d22\u4e00\u4e9b\u6bcf\u4e2a\u7cfb\u7edf\u7ba1\u7406\u5458\u90fd\u5e94\u8be5\u77e5\u9053\u7684\u5e38\u89c1\u9632\u706b\u5899\u914d\u7f6e:<\/p>\n

\u5141\u8bb8\u7279\u5b9a\u7aef\u53e3<\/h3>\n

\r\n# \u5141\u8bb8\u4f20\u5165\u7684HTTP\u6d41\u91cf\r\nsudo iptables -A INPUT -p tcp --dport 80 -j ACCEPT\r\n\r\n# \u5141\u8bb8\u4f20\u5165\u7684HTTPS\u6d41\u91cf\r\nsudo iptables -A INPUT -p tcp --dport 443 -j ACCEPT\r\n    <\/code><\/pre>\n
\u5b9e\u73b0NAT<\/h3>\n
\r\n# \u542f\u7528NAT\r\nsudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE\r\n\r\n# \u5c0680\u7aef\u53e3\u8f6c\u53d1\u5230\u5185\u90e8\u670d\u52a1\u5668\r\nsudo iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 192.168.1.100:80\r\n    <\/code><\/pre>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u9ad8\u7ea7iptables\u6280\u5de7: \u6210\u4e3a\u9632\u706b\u5899\u5fcd\u8005<\/strong><\/h2>\n
\u51c6\u5907\u597d\u5c06\u60a8\u7684iptables\u6280\u80fd\u63d0\u5347\u5230\u65b0\u7684\u6c34\u5e73\u4e86\u5417?\u8ba9\u6211\u4eec\u63a2\u7d22\u4e00\u4e9b\u9ad8\u7ea7\u6280\u5de7:<\/p>\n
\u4f7f\u7528\u81ea\u5b9a\u4e49\u94fe\u5b9e\u73b0\u66f4\u597d\u7684\u7ec4\u7ec7<\/h3>\n
\r\n# \u521b\u5efa\u81ea\u5b9a\u4e49\u94fe\r\nsudo iptables -N CUSTOM_CHAIN\r\n\r\n# \u5411\u81ea\u5b9a\u4e49\u94fe\u6dfb\u52a0\u89c4\u5219\r\nsudo iptables -A CUSTOM_CHAIN -p tcp --dport 8080 -j ACCEPT\r\n\r\n# \u5c06\u81ea\u5b9a\u4e49\u94fe\u94fe\u63a5\u5230INPUT\u94fe\r\nsudo iptables -A INPUT -j CUSTOM_CHAIN\r\n    <\/code><\/pre>\n
\u5b9e\u73b0\u901f\u7387\u9650\u5236<\/h3>\n
\r\n# \u9650\u5236SSH\u8fde\u63a5\u6bcf\u5206\u949f\u4e0d\u8d85\u8fc73\u6b21\r\nsudo iptables -A INPUT -p tcp --dport 22 -m state --state NEW -m recent --set\r\nsudo iptables -A INPUT -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 60 --hitcount 4 -j DROP\r\n    <\/code><\/pre>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
iptables\u6700\u4f73\u5b9e\u8df5: \u52a0\u5f3a\u60a8\u7684\u9632\u5fa1<\/strong><\/h2>\n
\u4e3a\u786e\u4fdd\u60a8\u7684iptables\u914d\u7f6e\u575a\u5982\u78d0\u77f3,\u8bf7\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5:<\/p>\n
\n
\u59cb\u7ec8\u91c7\u7528\u9ed8\u8ba4\u62d2\u7edd\u7b56\u7565<\/li>\n
\u8bb0\u5f55\u88ab\u4e22\u5f03\u7684\u6570\u636e\u5305\u4ee5\u4f9b\u5206\u6790<\/li>\n
\u4f7f\u7528\u8fde\u63a5\u8ddf\u8e2a\u8fdb\u884c\u72b6\u6001\u8fc7\u6ee4<\/li>\n
\u5b9a\u671f\u5ba1\u6838\u548c\u66f4\u65b0\u89c4\u5219<\/li>\n
\u5b9e\u65bd\u51fa\u7ad9\u8fc7\u6ee4<\/li>\n<\/ol>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
iptables\u6545\u969c\u6392\u9664: \u5f53\u4e8b\u60c5\u51fa\u9519\u65f6<\/strong><\/h2>\n
\u5373\u4f7f\u662f\u6700\u7cbe\u5fc3\u5236\u5b9a\u7684iptables\u914d\u7f6e\u6709\u65f6\u4e5f\u4f1a\u5bfc\u81f4\u95ee\u9898\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6545\u969c\u6392\u9664\u6280\u5de7:<\/p>\n
\n
\u4f7f\u7528iptables -L -v -n<\/code>\u547d\u4ee4\u67e5\u770b\u8be6\u7ec6\u7684\u89c4\u5219\u4fe1\u606f<\/li>\n
\u68c0\u67e5\u7cfb\u7edf\u65e5\u5fd7\u4e2d\u662f\u5426\u6709\u88ab\u4e22\u5f03\u7684\u6570\u636e\u5305<\/li>\n
\u6682\u65f6\u7981\u7528iptables\u4ee5\u9694\u79bb\u95ee\u9898<\/li>\n
\u4f7f\u7528tcpdump<\/code>\u7b49\u5de5\u5177\u5206\u6790\u7f51\u7edc\u6d41\u91cf<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u5c06iptables\u4e0e\u5176\u4ed6\u5b89\u5168\u5de5\u5177\u96c6\u6210<\/strong><\/h2>\n
iptables\u672c\u8eab\u5df2\u7ecf\u5f88\u5f3a\u5927,\u4f46\u5f53\u4e0e\u5176\u4ed6\u5b89\u5168\u5de5\u5177\u96c6\u6210\u65f6,\u5b83\u53d8\u5f97\u66f4\u52a0\u5f3a\u5927\u3002\u8003\u8651\u5c06iptables\u4e0e\u4ee5\u4e0b\u5de5\u5177\u7ed3\u5408\u4f7f\u7528:<\/p>\n
\n
fail2ban\u7528\u4e8e\u81ea\u52a8\u5c01\u7981\u6076\u610fIP<\/li>\n
Snort\u6216Suricata\u7528\u4e8e\u5165\u4fb5\u68c0\u6d4b<\/li>\n
LogWatch\u7528\u4e8e\u65e5\u5fd7\u5206\u6790\u548c\u8b66\u62a5<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u7ed3\u8bba<\/strong><\/h2>\n
\u638c\u63e1iptables\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u65c5\u7a0b\u3002\u968f\u7740\u60a8\u7ee7\u7eed\u63a2\u7d22\u548c\u5c1d\u8bd5\u8fd9\u4e2a\u5f3a\u5927\u7684\u5de5\u5177,\u60a8\u5c06\u53d1\u73b0\u589e\u5f3aLinux\u9632\u706b\u5899\u914d\u7f6e\u7684\u65b0\u65b9\u6cd5\u3002\u65e0\u8bba\u60a8\u662f\u5728\u4fdd\u62a4\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u8fd8\u662f\u9501\u5b9a\u670d\u52a1\u5668\u6258\u7ba1\u670d\u52a1\u5668,\u60a8\u5728\u8fd9\u91cc\u83b7\u5f97\u7684\u6280\u80fd\u90fd\u5c06\u5728\u4e0d\u65ad\u53d1\u5c55\u7684\u7f51\u7edc\u5b89\u5168\u9886\u57df\u4e2d\u4e3a\u60a8\u670d\u52a1\u3002<\/p>\n
\u8bb0\u4f4f,\u914d\u7f6e\u826f\u597d\u7684iptables\u9632\u706b\u5899\u662f\u60a8\u62b5\u5fa1\u7f51\u7edc\u5a01\u80c1\u7684\u7b2c\u4e00\u9053\u9632\u7ebf\u3002\u7ee7\u7eed\u5b66\u4e60,\u4fdd\u6301\u8b66\u60d5,\u613f\u60a8\u7684\u6570\u636e\u5305\u6c38\u8fdc\u5b89\u5168\u6d41\u52a8!<\/p>\n
[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"
[vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] \u5728\u7f51\u7edc\u5b89\u5168\u9886\u57df,iptables\u662f\u914d\u7f6eLinux\u9632\u706b\u5899\u7684\u5f3a\u5927\u5de5\u5177\u3002\u65e0\u8bba\u60a8\u662f\u5728\u7ba1\u7406\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u8fd8\u662f\u4fdd\u62a4\u670d\u52a1\u5668\u6258\u7ba1\u8bbe\u7f6e,\u638c\u63e1iptables\u90fd\u81f3\u5173\u91cd\u8981\u3002\u672c\u6307\u5357\u5c06\u5e26\u60a8\u4eceiptables\u57fa\u7840\u77e5\u8bc6\u5230\u9ad8\u7ea7\u6280\u5de7,\u4f7f\u60a8\u80fd\u591f\u524d\u6240\u672a\u6709\u5730\u52a0\u5f3aLinux\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u3002 [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] \u7406\u89e3iptables: Linux\u7684\u5b88\u95e8\u4eba iptables\u4e0d\u4ec5\u4ec5\u662f\u4e00\u4e2a\u5de5\u5177,\u5b83\u662fLinux\u7f51\u7edc\u5b89\u5168\u7684\u652f\u67f1\u3002\u5b83\u5728\u5185\u6838\u7ea7\u522b\u8fd0\u4f5c,\u6839\u636e\u9884\u5b9a\u4e49\u7684\u89c4\u5219\u62e6\u622a\u548c\u63a7\u5236\u7f51\u7edc\u6d41\u91cf\u3002\u53ef\u4ee5\u5c06\u5176\u89c6\u4e3a\u4ff1\u4e50\u90e8\u91cc\u8b66\u60d5\u7684\u4fdd\u5b89,\u51b3\u5b9a\u54ea\u4e9b\u6570\u636e\u5305\u53ef\u4ee5\u8fdb\u5165,\u54ea\u4e9b\u88ab\u62d2\u4e4b\u95e8\u5916,\u54ea\u4e9b\u83b7\u5f97\u7279\u6b8a\u5f85\u9047\u3002 iptables\u7684\u6838\u5fc3\u5305\u542b\u4e09\u4e2a\u4e3b\u8981\u6982\u5ff5: \u8868(Tables): \u4e0d\u540c\u7c7b\u578b\u89c4\u5219\u7684\u5206\u7c7b \u94fe(Chains): \u8868\u5185\u89c4\u5219\u7684\u5e8f\u5217 \u89c4\u5219(Rules): \u5e94\u7528\u4e8e\u6570\u636e\u5305\u7684\u5b9e\u9645\u8fc7\u6ee4\u5668 [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] \u51c6\u5907\u60a8\u7684\u6b66\u5668\u5e93: \u5b89\u88c5iptables \u5927\u591a\u6570Linux\u53d1\u884c\u7248\u90fd\u9884\u88c5\u4e86iptables\u3002\u4f46\u5982\u679c\u60a8\u9700\u8981\u624b\u52a8\u5b89\u88c5,\u4ee5\u4e0b\u662f\u5728\u4e0d\u540c\u7cfb\u7edf\u4e0a\u7684\u5b89\u88c5\u65b9\u6cd5: # Debian\/Ubuntu sudo apt-get update sudo apt-get install iptables # CentOS\/RHEL sudo yum install iptables-services # Arch Linux sudo pacman -S iptables \u8981\u9a8c\u8bc1\u5b89\u88c5,\u8bf7\u8fd0\u884c: iptables –version [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] \u57fa\u672ciptables\u547d\u4ee4: \u60a8\u7684\u7b2c\u4e00\u9053\u9632\u7ebf \u5728\u6df1\u5165\u590d\u6742\u914d\u7f6e\u4e4b\u524d,\u8ba9\u6211\u4eec\u5148\u719f\u6089\u4e00\u4e9b\u57fa\u672c\u7684iptables\u547d\u4ee4: # \u67e5\u770b\u5f53\u524d\u89c4\u5219 sudo iptables -L […]<\/p>\n
Read More…<\/a><\/p>\n","protected":false},"author":3,"featured_media":16056,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[62],"tags":[3606,3605,1906,583,353],"class_list":["post-16062","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hong-kong-dedicated-server-sc","tag-linux-firewall-sc","tag-iptables-sc","tag-1906","tag-network-security-sc","tag-server-rental-sc"],"acf":[],"yoast_head":"\n