https://www.clearsec.org/wikis/docs/%E6%A0%87%E5%87%86%E4%B8%8E%E8%A7%84%E8%8C%83/%E8%A1%8C%E6%A0%87/%E9%93%81%E8%B7%AF/Recent content in 铁路 on ClearSec WikiHugozh-cnSun, 11 Oct 2026 10:00:00 +0800https://www.clearsec.org/wikis/docs/%E6%A0%87%E5%87%86%E4%B8%8E%E8%A7%84%E8%8C%83/%E8%A1%8C%E6%A0%87/%E9%93%81%E8%B7%AF/q-cr-853-2021-%E9%93%81%E8%B7%AF%E7%BD%91%E7%BB%9C%E5%AE%89%E5%85%A8%E7%AD%89%E7%BA%A7%E4%BF%9D%E6%8A%A4%E5%AE%9A%E7%BA%A7%E6%8C%87%E5%8D%97/Sun, 11 Oct 2026 10:00:00 +0800https://www.clearsec.org/wikis/docs/%E6%A0%87%E5%87%86%E4%B8%8E%E8%A7%84%E8%8C%83/%E8%A1%8C%E6%A0%87/%E9%93%81%E8%B7%AF/q-cr-853-2021-%E9%93%81%E8%B7%AF%E7%BD%91%E7%BB%9C%E5%AE%89%E5%85%A8%E7%AD%89%E7%BA%A7%E4%BF%9D%E6%8A%A4%E5%AE%9A%E7%BA%A7%E6%8C%87%E5%8D%97/<blockquote> <p><strong>来源与版权</strong>：本页为本地转换稿（源文件 <code>行业标准\37 铁路\Q∕CR 853-2021 铁路网络安全等级保护定级指南.pdf</code>，共 17 页），版权归标准发布机构所有，仅供学习与测评工作参考，正式引用请核对官方发布版本。详见 <a href="https://www.clearsec.org/wikis/docs/%E6%A0%87%E5%87%86%E4%B8%8E%E8%A7%84%E8%8C%83/%E7%89%88%E6%9D%83%E5%A3%B0%E6%98%8E/">版权声明</a>。</p> </blockquote> <p>ICS 03.220.30</p> <p><strong>Q/CR</strong></p> <p><strong>中国国家铁路集团有限公司企业标准</strong></p> <p>Q/CR 853—2021</p> <h1 id="铁路网络安全等级保护定级指南">铁路网络安全等级保护定级指南</h1> <p><strong>Railway classification guide for classified protection of cybersecurity</strong></p> <p>2021-12-09 发布　　2022-01-09 实施</p> <p><strong>中国国家铁路集团有限公司</strong>　发 布</p> <h1 id="目次">目　次</h1> <p>前言 ······················································· Ⅲ 引言 ······················································· Ⅳ 1 范围 ····················································· 1 2 规范性引用文件 ·········································· 1 3 术语和定义 ··············································· 1 4 定级原理 ················································· 2 　4.1 安全保护等级 ········································· 2 　4.2 定级要素 ············································· 2 5 确定定级对象 ············································· 3 　5.1 系统定级对象 ········································· 3 　5.2 网络设施定级对象 ···································· 4 6 确定安全保护等级 ········································ 4 　6.1 定级方法概述 ········································· 4 　6.2 确定受侵害的客体 ···································· 5 　6.3 确定对客体的侵害程度 ······························· 5 　6.4 综合判定等级 ········································· 6 7 等级变更 ················································· 7 附录 A（资料性） 确定受侵害的客体及对客体的侵害程度 ··· 8 附录 B（资料性） 定级报告模板 ···························· 10 参考文献 ··················································· 12</p>