\u9999\u6e2f\u4f5c\u70ba\u5168\u7403\u7db2\u969b\u7db2\u8def\u6a1e\u7d10\u7684\u5730\u4f4d\u70ba\u4f3a\u670d\u5668\u5b89\u5168\u5e36\u4f86\u4e86\u7368\u7279\u7684\u6311\u6230\u548c\u6a5f\u6703\u3002\u9ad8\u901f\u9023\u63a5\u548c\u6230\u7565\u4f4d\u7f6e\u4f7f\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u5177\u6709\u5438\u5f15\u529b\uff0c\u4f46\u4e5f\u6210\u70ba\u5404\u7a2e\u7db2\u8def\u5a01\u8105\u7684\u76ee\u6a19\u3002<\/p>\n

\u9999\u6e2f\u79df\u7528\u4f3a\u670d\u5668\u9762\u81e8\u7684\u5e38\u898b\u5a01\u8105\uff1a<\/h3>\n

\n
• \u5229\u7528\u9ad8\u983b\u5bec\u57fa\u790e\u8a2d\u65bd\u7684DDoS\u653b\u64ca<\/li>\n
• \u91dd\u5c0d\u6230\u7565\u696d\u52d9\u6578\u64da\u7684\u9ad8\u7d1a\u6301\u7e8c\u6027\u5a01\u8105\uff08APT\uff09<\/li>\n
• \u5229\u7528\u53f8\u6cd5\u7ba1\u8f44\u8907\u96dc\u6027\u7684\u8de8\u5883\u7db2\u8def\u72af\u7f6a<\/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

  \u8d85\u8d8a\u9023\u63a5\u57e0\u6df7\u6dc6\u7684\u6709\u6548\u4f3a\u670d\u5668\u5b89\u5168\u7b56\u7565<\/strong><\/h2>\n

  \u96d6\u7136\u975e\u6a19\u6e96\u9023\u63a5\u57e0\u53ef\u4ee5\u5728\u66f4\u5ee3\u6cdb\u7684\u5b89\u5168\u7b56\u7565\u4e2d\u767c\u63ee\u4f5c\u7528\uff0c\u4f46\u4e0d\u61c9\u5c07\u5176\u4f5c\u70ba\u4e3b\u8981\u9632\u79a6\u6a5f\u5236\u3002\u4ee5\u4e0b\u662f\u66f4\u5f37\u5927\u7684\u65b9\u6cd5\u4f86\u4fdd\u8b77\u60a8\u5728\u9999\u6e2f\u79df\u7528\u7684\u4f3a\u670d\u5668\uff1a<\/p>\n

  1. \u9ad8\u7d1a\u9632\u706b\u7246\u914d\u7f6e<\/h3>\n

  \u5be6\u65bd\u4e00\u500b\u8d85\u8d8a\u7c21\u55ae\u9023\u63a5\u57e0\u963b\u64cb\u7684\u8907\u96dc\u9632\u706b\u7246\u7b56\u7565\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528iptables\u7684\u793a\u4f8b\u914d\u7f6e\uff1a<\/p>\n

  \r\n# Allow established connections\r\niptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT\r\n\r\n# Allow SSH (adjust port if non-standard)\r\niptables -A INPUT -p tcp --dport 22 -j ACCEPT\r\n\r\n# Allow HTTP and HTTPS\r\niptables -A INPUT -p tcp --dport 80 -j ACCEPT\r\niptables -A INPUT -p tcp --dport 443 -j ACCEPT\r\n\r\n# Block all other incoming traffic\r\niptables -A INPUT -j DROP\r\n\r\n# Save rules\r\niptables-save > \/etc\/iptables\/rules.v4\r\n    <\/code><\/pre>\n
  2. \u5be6\u65bd\u5f37\u5927\u7684\u8eab\u4efd\u9a57\u8b49<\/h3>\n
  \u4f7f\u7528\u591a\u56e0\u7d20\u8eab\u4efd\u9a57\u8b49\uff08MFA\uff09\u548c\u5f37\u5bc6\u78bc\u7b56\u7565\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5f37\u5236\u5bc6\u78bc\u8907\u96dc\u6027\u7684\u7c21\u55ae\u8173\u672c\uff1a<\/p>\n
  \r\n#!\/bin\/bash\r\n\r\n# Minimum password length\r\nMIN_LENGTH=12\r\n\r\n# Check password length\r\nif [ ${#1} -lt $MIN_LENGTH ]; then\r\n    echo \"\u5bc6\u78bc\u9577\u5ea6\u5fc5\u9808\u81f3\u5c11\u70ba $MIN_LENGTH \u500b\u5b57\u5143\"\r\n    exit 1\r\nfi\r\n\r\n# Check for uppercase, lowercase, numbers, and special characters\r\nif ! [[ \"$1\" =~ [A-Z] ]] || ! [[ \"$1\" =~ [a-z] ]] || ! [[ \"$1\" =~ [0-9] ]] || ! [[ \"$1\" =~ [!@#$%^&*()_+] ]]; then\r\n    echo \"\u5bc6\u78bc\u5fc5\u9808\u5305\u542b\u5927\u5beb\u5b57\u6bcd\u3001\u5c0f\u5beb\u5b57\u6bcd\u3001\u6578\u5b57\u548c\u7279\u6b8a\u5b57\u5143\"\r\n    exit 1\r\nfi\r\n\r\necho \"\u5bc6\u78bc\u7b26\u5408\u8907\u96dc\u6027\u8981\u6c42\"\r\nexit 0\r\n    <\/code><\/pre>\n
  3. \u5b9a\u671f\u66f4\u65b0\u548c\u88dc\u4e01\u7ba1\u7406<\/h3>\n
  \u4fdd\u6301\u7cfb\u7d71\u66f4\u65b0\u4ee5\u9632\u6b62\u5df2\u77e5\u6f0f\u6d1e\u3002\u4f7f\u7528\u50cfunattended-upgrades\u9019\u6a23\u7684\u5de5\u5177\u81ea\u52d5\u5316\u6b64\u904e\u7a0b\uff0c\u9069\u7528\u65bc\u57fa\u65bcDebian\u7684\u7cfb\u7d71\uff1a<\/p>\n
  \r\nsudo apt-get install unattended-upgrades\r\nsudo dpkg-reconfigure --priority=low unattended-upgrades\r\n    <\/code><\/pre>\n
  4. \u5be6\u65bd\u5165\u4fb5\u6aa2\u6e2c\u548c\u9810\u9632\u7cfb\u7d71\uff08IDS\/IPS\uff09<\/h3>\n
  \u50cfSuricata\u9019\u6a23\u7684\u5de5\u5177\u53ef\u4ee5\u76e3\u63a7\u7db2\u8def\u6d41\u91cf\u4e2d\u7684\u53ef\u7591\u6d3b\u52d5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684Suricata\u914d\u7f6e\uff1a<\/p>\n
  \r\n# \/etc\/suricata\/suricata.yaml\r\nvars:\r\n  address-groups:\r\n    HOME_NET: \"[192.168.0.0\/16,10.0.0.0\/8,172.16.0.0\/12]\"\r\n    EXTERNAL_NET: \"!$HOME_NET\"\r\n\r\n# Enable IPS mode\r\naf-packet:\r\n  - interface: eth0\r\n    cluster-id: 99\r\n    cluster-type: cluster_flow\r\n    defrag: yes\r\n\r\n# Set rules\r\nrule-files:\r\n  - suricata.rules\r\n\r\n# Enable alerts\r\noutputs:\r\n  - fast:\r\n      enabled: yes\r\n      filename: fast.log\r\n      append: yes\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
  \u5229\u7528\u9999\u6e2f\u7684\u7368\u7279\u5730\u4f4d\u589e\u5f37\u5b89\u5168\u6027<\/strong><\/h2>\n
  \u9999\u6e2f\u7684\u6230\u7565\u4f4d\u7f6e\u5141\u8a31\u5be6\u65bd\u5275\u65b0\u7684\u5b89\u5168\u67b6\u69cb\u3002\u8003\u616e\u5be6\u65bd\u591a\u5c64\u6b21\u65b9\u6cd5\uff1a<\/p>\n
  \n
  \u4f7f\u7528\u5728\u9999\u6e2f\u8a2d\u6709\u7bc0\u9ede\u7684\u5167\u5bb9\u5206\u767c\u7db2\u8def\uff08CDN\uff09\u9032\u884cDDoS\u7de9\u89e3<\/li>\n
  \u5be6\u65bd\u5730\u7406\u5c01\u9396\u4ee5\u9650\u5236\u4f86\u81ea\u9ad8\u98a8\u96aa\u5730\u5340\u7684\u8a2a\u554f<\/li>\n
  \u5229\u7528\u9999\u6e2f\u7684\u9ad8\u901f\u9023\u63a5\u9032\u884c\u5373\u6642\u5b89\u5168\u76e3\u63a7\u548c\u5feb\u901f\u97ff\u61c9<\/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
  \u7d50\u8ad6\uff1a\u8d85\u8d8a\u9023\u63a5\u57e0\u6df7\u6dc6<\/strong><\/h2>\n
  \u96d6\u7136\u4f7f\u7528\u975e\u6a19\u6e96\u9023\u63a5\u57e0\u53ef\u4ee5\u4f5c\u70ba\u6df1\u5ea6\u9632\u79a6\u7b56\u7565\u7684\u4e00\u90e8\u5206\uff0c\u4f46\u986f\u7136\uff0c\u5f37\u5927\u7684\u4f3a\u670d\u5668\u5b89\u5168\u6027\uff0c\u7279\u5225\u662f\u5728\u50cf\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u9019\u6a23\u7684\u52d5\u614b\u74b0\u5883\u4e2d\uff0c\u9700\u8981\u591a\u65b9\u9762\u7684\u65b9\u6cd5\u3002\u5c08\u6ce8\u65bc\u5be6\u65bd\u5f37\u5927\u7684\u8eab\u4efd\u9a57\u8b49\u3001\u4fdd\u6301\u7cfb\u7d71\u66f4\u65b0\u3001\u4f7f\u7528\u9ad8\u7d1a\u9632\u706b\u7246\u914d\u7f6e\uff0c\u4e26\u5229\u7528\u9999\u6e2f\u5728\u5168\u7403\u7db2\u8def\u683c\u5c40\u4e2d\u7684\u7368\u7279\u5730\u4f4d\u3002<\/p>\n
  \u8acb\u8a18\u4f4f\uff0c\u771f\u6b63\u7684\u5b89\u5168\u6027\u4f86\u81ea\u65bc\u4e00\u500b\u5168\u9762\u7684\u7b56\u7565\uff0c\u8a72\u7b56\u7565\u91dd\u5c0d\u591a\u5c64\u6f5b\u5728\u6f0f\u6d1e\u3002\u901a\u904e\u7d50\u5408\u5404\u7a2e\u6280\u8853\u4e26\u4fdd\u6301\u8b66\u60d5\uff0c\u60a8\u53ef\u4ee5\u986f\u8457\u589e\u5f37\u4f3a\u670d\u5668\u62b5\u79a6\u7db2\u8def\u5a01\u8105\u7684\u80fd\u529b\uff0c\u7121\u8ad6\u60a8\u9078\u64c7\u4f7f\u7528\u54ea\u4e9b\u9023\u63a5\u57e0\u3002<\/p>\n
   [\/vc_column_text][\/vc_column][\/vc_row] [vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]   <\/p>\n
  \u5e38\u898b\u554f\u984c\u89e3\u7b54\uff1a\u95dc\u65bc\u4f3a\u670d\u5668\u5b89\u5168\u548c\u975e\u6a19\u6e96\u9023\u63a5\u57e0\u7684\u5e38\u898b\u554f\u984c<\/strong><\/h2>\n
  \n
  \u554f\uff1a\u5c07SSH\u5f9e22\u9023\u63a5\u57e0\u66f4\u6539\u70ba\u975e\u6a19\u6e96\u9023\u63a5\u57e0\u771f\u7684\u80fd\u63d0\u9ad8\u5b89\u5168\u6027\u55ce\uff1f<\/strong>
  \n        \u7b54\uff1a\u96d6\u7136\u5b83\u53ef\u4ee5\u6e1b\u5c11\u81ea\u52d5\u6383\u63cf\uff0c\u4f46\u5b83\u4e0d\u80fd\u66ff\u4ee3\u5f37\u5927\u7684\u8eab\u4efd\u9a57\u8b49\u548c\u9069\u7576\u7684\u9632\u706b\u7246\u914d\u7f6e\u3002<\/li>\n
  \u554f\uff1a\u4f7f\u7528\u975e\u6a19\u6e96\u9023\u63a5\u57e0\u662f\u5426\u6709\u4efb\u4f55\u6548\u80fd\u5f71\u97ff\uff1f<\/strong>
  \n        \u7b54\uff1a\u901a\u5e38\u6c92\u6709\u3002\u9023\u63a5\u57e0\u865f\u78bc\u4e0d\u6703\u986f\u8457\u5f71\u97ff\u6548\u80fd\u3002\u7136\u800c\uff0c\u5b83\u53ef\u80fd\u6703\u4f7f\u7db2\u8def\u914d\u7f6e\u8b8a\u5f97\u8907\u96dc\u3002<\/li>\n
  \u554f\uff1a\u6211\u5982\u4f55\u767c\u73fe\u54ea\u4e9b\u9023\u63a5\u57e0\u5728\u6211\u7684\u9999\u6e2f\u79df\u7528\u4f3a\u670d\u5668\u4e0a\u88ab\u6383\u63cf\uff1f<\/strong>
  \n        \u7b54\uff1a\u4f7f\u7528\u50cf`netstat`\u6216`ss`\u9019\u6a23\u7684\u5de5\u5177\u4f86\u76e3\u63a7\u50b3\u5165\u9023\u63a5\uff0c\u6216\u5be6\u65bd\u9023\u63a5\u57e0\u6383\u63cf\u6aa2\u6e2c\u7cfb\u7d71\u3002<\/li>\n<\/ol>\n
  \u5728\u9999\u6e2f\u52d5\u614b\u7684\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883\u4e2d\u4fdd\u8b77\u60a8\u7684\u4f3a\u670d\u5668\u9700\u8981\u6301\u7e8c\u7684\u8b66\u60d5\u548c\u9069\u61c9\u3002\u901a\u904e\u5be6\u65bd\u8d85\u8d8a\u7c21\u55ae\u9023\u63a5\u57e0\u64cd\u4f5c\u7684\u5168\u9762\u5b89\u5168\u7b56\u7565\uff0c\u60a8\u53ef\u4ee5\u66f4\u597d\u5730\u4fdd\u8b77\u60a8\u7684\u8cc7\u7522\u514d\u53d7\u4e0d\u65b7\u6f14\u8b8a\u7684\u7db2\u8def\u5a01\u8105\u3002<\/p>\n
  [\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"
  [vc_row el_class=”blog-detail-section”][vc_ […]<\/p>\n
  Read More…<\/a><\/p>\n","protected":false},"author":3,"featured_media":16418,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[3741,3742,2239,852,247],"class_list":["post-16435","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hong-kong-dedicated-server-tc","tag-non-standard-ports-tc","tag-firewall-configuration-tc","tag-ddos-protection-tc","tag-server-security-tc","tag-hong-kong-server-rental-tc"],"acf":[],"yoast_head":"\n