\u5b89\u5168\u8ba4\u8bc1\u662f\u9632\u62a4\u5173\u952e\uff0c\u9996\u5148\u9700\u7981\u7528\u9ad8\u98ce\u9669\u767b\u5f55\u65b9\u5f0f\uff1a<\/p>\n

\n
• \u7981\u6b62root\u76f4\u63a5\u767b\u5f55\uff1a\u4fee\u6539\/etc\/ssh\/sshd_config<\/code> \uff0c\u8bbe\u7f6e PermitRootLogin no<\/code><\/li>\n
• \u4f7f\u7528TCP Wrapper\u9650\u5236\u8bbf\u95ee\uff0c\u914d\u7f6e \/etc\/hosts.allow<\/code> \u4e0e \/etc\/hosts.deny<\/code><\/li>\n<\/ul>\n

  \u5207\u6362\u81f3\u5bc6\u94a5\u8ba4\u8bc1\u6a21\u5f0f\uff0c\u63d0\u5347\u5b89\u5168\u6027\uff1a<\/p>\n

  ssh-keygen -t rsa -b 4096 -C \"\u81ea\u5b9a\u4e49\u6807\u8bc6\"\r\nssh-copy-id user@server_ip\r\n# \u53ef\u9009\u64cd\u4f5c\uff1a\u5728sshd_config\u4e2d\u8bbe\u7f6ePasswordAuthentication no\uff0c\u7981\u7528\u5bc6\u7801\u767b\u5f55<\/code><\/pre>\n
  \u901a\u8fc7PAM\u914d\u7f6e\u5f3a\u5236\u4e25\u683c\u5bc6\u7801\u7b56\u7565\uff0c\u786e\u4fdd\u5bc6\u7801\u590d\u6742\u5ea6\u8fbe\u6807\u4e14\u5b9a\u671f\u8f6e\u6362\uff08\u4f8b\u5982\u7528chage -M 90 username<\/code>\u8bbe\u7f6e90\u5929\u6709\u6548\u671f\uff09\u3002[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
  \u7f51\u7edc\u9632\u5fa1\uff1a\u6784\u5efa\u5f39\u6027\u8fb9\u754c<\/strong><\/h2>\n
  \u9632\u706b\u5899\u914d\u7f6e\u6700\u4f73\u5b9e\u8df5<\/h3>\n
  \u914d\u7f6e\u9632\u706b\u5899\u4ec5\u5141\u8bb8\u5fc5\u8981\u6d41\u91cf\u901a\u8fc7\u3002\u5bf9\u4e8eDebian\u7cfb\u5217\u7cfb\u7edf\uff1a<\/p>\n
  sudo ufw default deny incoming\r\nsudo ufw default allow outgoing\r\nsudo ufw allow ssh\/tcp\r\nsudo ufw allow 80\/tcp\r\nsudo ufw allow 443\/tcp\r\nsudo ufw enable <\/code><\/pre>\n
  \u5728CentOS\/RHEL\u7cfb\u7edf\u4e2d\uff0c\u4f7f\u7528iptables\u5b9e\u73b0\u7cbe\u7ec6\u5316\u63a7\u5236\uff1a<\/p>\n
  iptables -F && iptables -X && iptables -t nat -F && iptables -t nat -X\r\niptables -A INPUT -i lo -j ACCEPT\r\niptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT\r\niptables -A INPUT -p tcp --dport 22:443 -j ACCEPT\r\niptables -A INPUT -j LOG --log-prefix \"DROP INPUT \" && iptables -A INPUT -j DROP<\/code><\/pre>\n
  \u8fd9\u4e9b\u89c4\u5219\u53ef\u963b\u65ad\u672a\u6388\u6743\u8bbf\u95ee\uff0c\u540c\u65f6\u653e\u884c\u5fc5\u8981\u670d\u52a1\u6d41\u91cf\u3002<\/p>\n
  \u7aef\u53e3\u4e0e\u670d\u52a1\u7ba1\u7406<\/h3>\n
  \u8bc6\u522b\u5e76\u5173\u95ed\u95f2\u7f6e\u7aef\u53e3\uff0c\u51cf\u5c11\u66b4\u9732\u9762\uff1a<\/p>\n
  \n
  \u5217\u51fa\u5f00\u653e\u7aef\u53e3\uff1anetstat -tulpn | grep LISTEN<\/code><\/li>\n
  \u7981\u7528\u9057\u7559\u670d\u52a1\uff1asudo systemctl disable --now telnet.socket vsftpd<\/code><\/li>\n<\/ol>\n
  \u9650\u5236SSH\u8bbf\u95ee\u6e90\uff08\u4f8b\u5982\u4ec5\u5141\u8bb8\u7279\u5b9a\u5730\u533aIP\u6bb5\uff09\uff0c\u5e76\u90e8\u7f72\u5de5\u5177\u62b5\u5fa1\u66b4\u529b\u7834\u89e3\u3002\u8de8\u5e73\u53f0\u89e3\u51b3\u65b9\u6848\u53ef\u76d1\u63a7\u767b\u5f55\u5c1d\u8bd5\uff0c\u5bf9\u591a\u6b21\u5931\u8d25\u7684\u8bbf\u95ee\u6267\u884c\u4e34\u65f6\u5c01\u7981\u3002<\/p>\n
  [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
  \u6743\u9650\u6a21\u578b\uff1a\u8df5\u884c\u6700\u5c0f\u6743\u9650\u539f\u5219<\/strong><\/h2>\n
  \u7528\u6237\u8d26\u6237\u4f18\u5316<\/h3>\n
  \u91c7\u7528\u96f6\u4fe1\u4efb\u7406\u5ff5\uff0c\u4e3a\u5e94\u7528\u521b\u5efa\u4e13\u7528\u7528\u6237\u8d26\u6237\uff1a<\/p>\n
  useradd -m -s \/bin\/bash app_user\r\nusermod -aG sudo app_user\r\n    <\/code><\/pre>\n
  \u901a\u8fc7visudo<\/code>\u5206\u914d\u7cbe\u7ec6\u5316sudo\u6743\u9650\uff0c\u786e\u4fdd\u7528\u6237\u4ec5\u62e5\u6709\u5fc5\u8981\u64cd\u4f5c\u6743\u9650\u3002\u5b9a\u671f\u5ba1\u8ba1\u8d26\u6237\uff0c\u6e05\u7406\u95f2\u7f6e\u8d26\u53f7\u2014\u2014\u53ef\u901a\u8fc7\u547d\u4ee4\u8bc6\u522b90\u5929\u4ee5\u4e0a\u672a\u767b\u5f55\u7528\u6237\uff0c\u5bf9\u5176\u6267\u884c\u9501\u5b9a\u6216\u5220\u9664\u64cd\u4f5c\u3002<\/p>\n
  \u6587\u4ef6\u7cfb\u7edf\u5b89\u5168\u63aa\u65bd<\/h3>\n
  \u8c03\u6574\u5173\u952e\u7cfb\u7edf\u6587\u4ef6\u6743\u9650\uff0c\u63d0\u5347\u5b89\u5168\u6027\uff1a<\/p>\n
  chmod 750 \/etc \/sudoers\r\nchmod 640 \/etc \/shadow\r\n <\/code><\/pre>\n
  \u5982\u9700\u6781\u81f4\u9632\u62a4\uff0c\u53ef\u5bf9\u6838\u5fc3\u6587\u4ef6\u4f7f\u7528chattr +i<\/code>\u9501\u5b9a\uff08\u9700\u8c28\u614e\u64cd\u4f5c\uff0c\u907f\u514d\u5f71\u54cd\u6b63\u5e38\u8fd0\u7ef4\uff09\u3002\u901a\u8fc7\u78c1\u76d8\u52a0\u5bc6\u5de5\u5177\u5bf9\u9759\u6001\u654f\u611f\u6570\u636e\u52a0\u5bc6\uff0c\u540c\u65f6\u5f3a\u5236\u6240\u6709\u4f20\u8f93\u6570\u636e\u901a\u8fc7HTTPS\u4fdd\u62a4\uff0c\u5e76\u501f\u52a9\u8bc1\u4e66\u673a\u6784\u5b9e\u73b0\u5b89\u5168\u8fde\u63a5\u3002<\/p>\n
  [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
  \u76d1\u63a7\u4e0e\u54cd\u5e94\uff1a\u4e3b\u52a8\u5a01\u80c1\u68c0\u6d4b<\/strong><\/h2>\n
  \u9ad8\u7ea7\u65e5\u5fd7\u7ba1\u7406<\/h3>\n
  \u96c6\u4e2d\u65e5\u5fd7\u4fbf\u4e8e\u5206\u6790\uff0c\u914d\u7f6ersyslog\u5c06\u65e5\u5fd7\u53d1\u9001\u81f3\u8fdc\u7a0b\u670d\u52a1\u5668\u3002\u5b9e\u65f6\u76d1\u63a7\u5173\u952e\u65e5\u5fd7\uff1a<\/p>\n
  \n
  \u8ba4\u8bc1\u4e8b\u4ef6\uff1a\/var\/log\/auth.log<\/code><\/li>\n
  \u7cfb\u7edf\u6d3b\u52a8\uff1a\/var\/log\/syslog<\/code><\/li>\n<\/ul>\n
  logwatch\u7b49\u5de5\u5177\u53ef\u751f\u6210\u6bcf\u65e5\u5b89\u5168\u62a5\u544a\uff0c\u800c\u57fa\u4e8eElasticsearch\u3001Logstash\u3001Kibana\u7684ELK Stack\u7b49\u590d\u6742\u67b6\u6784\uff0c\u80fd\u5b9e\u73b0\u6df1\u5ea6\u65e5\u5fd7\u5206\u6790\uff0c\u5feb\u901f\u8bc6\u522b\u5f02\u5e38\u3002<\/p>\n
  \u5165\u4fb5\u68c0\u6d4b\u4e0e\u5e94\u6025\u51c6\u5907<\/h3>\n
  \u90e8\u7f72\u8f7b\u91cf\u7ea7\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\uff0c\u76d1\u63a7\u7cfb\u7edf\u5b8c\u6574\u6027\u4e0e\u7f51\u7edc\u6d41\u91cf\u3002\u7ed3\u5408\u4e3b\u673a\u7ea7\u4e0e\u7f51\u7edc\u7ea7\u5de5\u5177\uff0c\u8986\u76d6\u5168\u653b\u51fb\u8def\u5f84\u3002\u5236\u5b9a\u5b8c\u5584\u7684\u5e94\u6025\u54cd\u5e94\u8ba1\u5212\uff0c\u5305\u542b\uff1a<\/p>\n
  \n
  \u5b9a\u671f\u5411\u5f02\u5730\u5b58\u50a8\u5907\u4efd\u6570\u636e<\/li>\n
  \u660e\u786e\u904f\u5236\u3001\u7f13\u89e3\u3001\u6062\u590d\u7684\u6807\u51c6\u5316\u6d41\u7a0b<\/li>\n<\/ol>\n
  \u5b9a\u671f\u6d4b\u8bd5\u54cd\u5e94\u8ba1\u5212\uff0c\u786e\u4fdd\u5728\u5b9e\u9645\u4e8b\u4ef6\u4e2d\u80fd\u9ad8\u6548\u5e94\u5bf9\u3002<\/p>\n
  [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
  \u5408\u89c4\u6027\u4e0e\u6301\u7eed\u4f18\u5316<\/strong><\/h2>\n
  \u901a\u8fc7\u7cfb\u7edf\u914d\u7f6e\u6ee1\u8db3\u7279\u5b9a\u8981\u6c42\uff0c\u9075\u5b88\u5730\u533a\u6570\u636e\u4fdd\u62a4\u6cd5\u89c4\u2014\u2014\u4f8b\u5982\u4e3a\u7b26\u5408CCPA\u8981\u6c42\u7559\u5b58\u65e5\u5fd7\uff0c\u4e3a\u6ee1\u8db3PCI-DSS\u6807\u51c6\u7981\u7528\u8fc7\u65f6\u52a0\u5bc6\u534f\u8bae\u3002\u7ef4\u62a4\u5b89\u5168\u68c0\u67e5\u6e05\u5355\uff0c\u8ddf\u8e2a\u5df2\u5b8c\u6210\u63aa\u65bd\u5e76\u5b9a\u671f\u590d\u67e5\u3002\u8ba2\u9605\u6f0f\u6d1e\u6570\u636e\u5e93\uff0c\u53ca\u65f6\u4e86\u89e3\u65b0\u5a01\u80c1\uff0c\u6bcf\u5b63\u5ea6\u4f7f\u7528\u884c\u4e1a\u6807\u51c6\u5de5\u5177\u5f00\u5c55\u5b89\u5168\u8bc4\u4f30\uff0c\u53d1\u73b0\u6f5c\u5728\u98ce\u9669\u3002<\/p>\n
  [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
  \u7ed3\u8bed\uff1a\u7ef4\u62a4\u5b89\u5168\u7684\u670d\u52a1\u5668\u79df\u7528\u73af\u5883<\/strong><\/h2>\n
  \u5728\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\u4fdd\u969cLinux\u670d\u52a1\u5668\u5b89\u5168\uff0c\u9700\u8981\u7ed3\u5408\u6280\u672f\u4e13\u4e1a\u77e5\u8bc6\u3001\u7cfb\u7edf\u5316\u914d\u7f6e\u53ca\u6301\u7eed\u8b66\u60d5\u3002\u9075\u5faa\u672c\u6587\u52a0\u56fa\u6b65\u9aa4\uff0c\u4f60\u53ef\u642d\u5efa\u80fd\u62b5\u5fa1\u5a01\u80c1\u3001\u7b26\u5408\u6cd5\u89c4\u8981\u6c42\u4e14\u4fdd\u969c\u670d\u52a1\u4e0d\u4e2d\u65ad\u7684\u5f39\u6027\u67b6\u6784\u3002\u5b9a\u671f\u56de\u987e\u5e76\u66f4\u65b0\u5b89\u5168\u7b56\u7565\uff0c\u4ee5\u9002\u5e94\u4e0d\u65ad\u53d8\u5316\u7684\u98ce\u9669\uff0c\u8ba9\u670d\u52a1\u5668\u73af\u5883\u5728\u590d\u6742\u6570\u5b57\u751f\u6001\u4e2d\u59cb\u7ec8\u4fdd\u6301\u575a\u56fa\u53ef\u9760\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_column][vc_column_text css=””] \u5728\u670d\u52a1\u5668\u79df\u7528\u9886\u57df\uff0c\u4fdd\u969cLinux\u73af\u5883\u5b89\u5168\u9700\u8981\u7ed3\u5408\u6280\u672f\u7cbe\u51c6\u6027\u4e0e\u4e3b\u52a8\u9632\u5fa1\u7b56\u7565\u3002\u672c\u6587\u5c06\u68b3\u7406\u52a0\u56fa\u670d\u52a1\u5668\u7684\u6838\u5fc3\u6b65\u9aa4\uff0c\u9488\u5bf9\u9ad8\u98ce\u9669\u6570\u5b57\u73af\u5883\u4e2d\u7cfb\u7edf\u9762\u4e34\u7684\u7279\u6b8a\u6311\u6218\u63d0\u4f9b\u89e3\u51b3\u65b9\u6848\u3002\u901a\u8fc7\u805a\u7126\u57fa\u7840\u914d\u7f6e\u3001\u7f51\u7edc\u9632\u62a4\u4e0e\u6301\u7eed\u76d1\u63a7\uff0c\u4f60\u53ef\u642d\u5efa\u80fd\u62b5\u5fa1\u4e0d\u65ad\u6f14\u53d8\u5a01\u80c1\u7684\u575a\u56fa\u5b89\u5168\u67b6\u6784\u3002 [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””] \u4e3a\u4f55Linux\u670d\u52a1\u5668\u9700\u6df1\u5ea6\u5b89\u5168\u52a0\u56fa \u73b0\u4ee3\u670d\u52a1\u5668\u73af\u5883\u5904\u4e8e\u590d\u6742\u653b\u51fb\u5a01\u80c1\u4e2d\uff0c\u5bf9\u4e8e\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\uff0c\u98ce\u9669\u5c24\u4e3a\u7a81\u51fa\uff0c\u4e3b\u8981\u4f53\u73b0\u5728\uff1a \u9488\u5bf9\u66b4\u9732IP\u6bb5\u7684\u9891\u7e41DDoS\u653b\u51fb CCPA\u3001PCI-DSS\u7b49\u4e25\u683c\u76d1\u7ba1\u8981\u6c42 \u8de8\u5883\u6570\u636e\u4f20\u8f93\u4f34\u968f\u7684\u6f5c\u5728\u98ce\u9669 \u5b89\u5168\u52a0\u56fa\u7684\u6838\u5fc3\u76ee\u6807\u662f\u6784\u5efa\u5206\u5c42\u9632\u5fa1\u4f53\u7cfb\uff1a\u963b\u6b62\u672a\u6388\u6743\u8bbf\u95ee\u3001\u68c0\u6d4b\u5f02\u5e38\u884c\u4e3a\u3001\u786e\u4fdd\u4e8b\u4ef6\u5feb\u901f\u54cd\u5e94\u3002\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u4ec5\u80fd\u4fdd\u969c\u6570\u636e\u5b8c\u6574\u6027\uff0c\u8fd8\u80fd\u7ef4\u6301\u670d\u52a1\u53ef\u7528\u6027\u2014\u2014\u8fd9\u5bf9\u4efb\u4f55\u670d\u52a1\u5668\u79df\u7528\u4e1a\u52a1\u90fd\u81f3\u5173\u91cd\u8981\u3002 [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””] \u642d\u5efa\u5b89\u5168\u57fa\u7840\uff1a\u6838\u5fc3\u7cfb\u7edf\u914d\u7f6e \u7cfb\u7edf\u66f4\u65b0\u4e0e\u8865\u4e01\u7ba1\u7406 \u8fc7\u65f6\u8f6f\u4ef6\u662f\u653b\u51fb\u8005\u5e38\u89c1\u7684\u5165\u4fb5\u5165\u53e3\uff0c\u90e8\u7f72\u81ea\u52a8\u66f4\u65b0\u673a\u5236\u53ef\u786e\u4fdd\u670d\u52a1\u5668\u8fd0\u884c\u6700\u65b0\u5b89\u5168\u8865\u4e01\uff1a # Debian\/Ubuntu\u7cfb\u7edf sudo apt update && sudo apt upgrade -y sudo apt install unattended-upgrades sudo dpkg-reconfigure unattended-upgrades # CentOS\/RHEL \u7cfb\u7edf sudo yum update -y sudo systemctl enable –now dnf-automatic.timer \u5b9a\u671f\u68c0\u67e5\u7ec4\u4ef6\u7248\u672c\uff0c\u53ca\u65f6\u53d1\u73b0\u6f5c\u5728\u6f0f\u6d1e\uff1a \u5185\u6838\u7248\u672c: uname -r (prioritize LTS releases) […]<\/p>\n
  Read More…<\/a><\/p>\n","protected":false},"author":1,"featured_media":27315,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4816],"tags":[8846,8845,4853,583],"class_list":["post-27326","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-america-dedicated-server-sc","tag-linux-server-security-sc","tag-hardening-guide-sc","tag-us-hosting-sc","tag-network-security-sc"],"acf":[],"yoast_head":"\n