* [Blog](https://www.paloaltonetworks.com/blog) * [Palo Alto Networks](https://www.paloaltonetworks.com/blog/corporate/) * [未分类](https://www.paloaltonetworks.com/blog/category/%e6%9c%aa%e5%88%86%e7%b1%bb/?lang=zh-hant) * 定义保护范围以大幅缩小攻击范围... # 定义保护范围以大幅缩小攻击范围 [](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.paloaltonetworks.com%2Fblog%2F2018%2F10%2F%25e5%25ae%259a%25e4%25b9%2589%25e4%25bf%259d%25e6%258a%25a4%25e8%258c%2583%25e5%259b%25b4%25e4%25bb%25a5%25e5%25a4%25a7%25e5%25b9%2585%25e7%25bc%25a9%25e5%25b0%258f%25e6%2594%25bb%25e5%2587%25bb%25e8%258c%2583%25e5%259b%25b4%2F%3Flang%3Dzh-hans) [](https://twitter.com/share?text=%E5%AE%9A%E4%B9%89%E4%BF%9D%E6%8A%A4%E8%8C%83%E5%9B%B4%E4%BB%A5%E5%A4%A7%E5%B9%85%E7%BC%A9%E5%B0%8F%E6%94%BB%E5%87%BB%E8%8C%83%E5%9B%B4&url=https%3A%2F%2Fwww.paloaltonetworks.com%2Fblog%2F2018%2F10%2F%25e5%25ae%259a%25e4%25b9%2589%25e4%25bf%259d%25e6%258a%25a4%25e8%258c%2583%25e5%259b%25b4%25e4%25bb%25a5%25e5%25a4%25a7%25e5%25b9%2585%25e7%25bc%25a9%25e5%25b0%258f%25e6%2594%25bb%25e5%2587%25bb%25e8%258c%2583%25e5%259b%25b4%2F%3Flang%3Dzh-hans) [](https://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fwww.paloaltonetworks.com%2Fblog%2F2018%2F10%2F%25e5%25ae%259a%25e4%25b9%2589%25e4%25bf%259d%25e6%258a%25a4%25e8%258c%2583%25e5%259b%25b4%25e4%25bb%25a5%25e5%25a4%25a7%25e5%25b9%2585%25e7%25bc%25a9%25e5%25b0%258f%25e6%2594%25bb%25e5%2587%25bb%25e8%258c%2583%25e5%259b%25b4%2F%3Flang%3Dzh-hans&title=%E5%AE%9A%E4%B9%89%E4%BF%9D%E6%8A%A4%E8%8C%83%E5%9B%B4%E4%BB%A5%E5%A4%A7%E5%B9%85%E7%BC%A9%E5%B0%8F%E6%94%BB%E5%87%BB%E8%8C%83%E5%9B%B4&summary=&source=) [](https://www.paloaltonetworks.com//www.reddit.com/submit?url=https://www.paloaltonetworks.com/blog/2018/10/%e5%ae%9a%e4%b9%89%e4%bf%9d%e6%8a%a4%e8%8c%83%e5%9b%b4%e4%bb%a5%e5%a4%a7%e5%b9%85%e7%bc%a9%e5%b0%8f%e6%94%bb%e5%87%bb%e8%8c%83%e5%9b%b4/?lang=zh-hans&ts=markdown) [](mailto:?subject=定义保护范围以大幅缩小攻击范围) Link copied By [John Kindervag](https://www.paloaltonetworks.com/blog/author/john-kindervag/?lang=zh-hans&ts=markdown "Posts by John Kindervag") Oct 05, 2018 1 minutes [未分类](https://www.paloaltonetworks.com/blog/category/%e6%9c%aa%e5%88%86%e7%b1%bb/?lang=zh-hant&ts=markdown) 在网络安全方面，有一件大家都会关注的事情，就是定义想要保护的对象。我们的共识是需要防御攻击，而攻击都有自己的目标。那么这个目标是什么？ 多年来，我们一直在努力缩小攻击范围，但遗憾的是，攻击范围却像宇宙一样不断扩大。每一项新技术的诞生都会带来一系列新问题和漏洞。最值得注意的是，物联网的产生使得攻击范围大幅增加。最新发现的漏洞（例如攻击芯片底层的 [Spectre 和 Meltdown](https://www.paloaltonetworks.com/blog/2018/01/threat-brief-meltdown-spectre-vulnerabilities?ts=markdown)）几乎导致所有现代计算系统都沦为攻击范围的一部分。 ![ZeroTrustImage](https://www.paloaltonetworks.com/blog/wp-content/uploads/2018/10/ZeroTrustImage-500x221.png) 在零信任方法中，我们不关注宏观层面的攻击范围，而是关注于确定我们需要保护的对象：最大程度缩小攻击范围或保护范围。通常，零信任网络至少基于下列四项（可按首字母缩略词 DAAS 记忆）之一来定义保护范围： * 数据 (**D** ata)：*需要保护哪些数据？* * 应用 (**A** pplications)：*哪些应用使用敏感信息？* * 资产 (**A** ssets)：*哪些资产最敏感？* * 服务 (**S** ervices)：*可以利用哪些服务（例如 DNS、DHCP 和 Active Directory）来打破正常 IT 运营秩序？* 保护范围具备的优势在于它不仅总是可知，而且总是远远小于整体的攻击范围。现在您可能不知道如何确定保护范围，但一定能够找出答案。大多数组织都无法定义攻击范围，因此尝试进行渗透的攻击者总会取得成功。用于侵入组织庞大的保护边界的方法无穷无尽。正因如此，基于大型边界的安全防护手段已经证实无法成功。旧的防御模型将安全控制（如防火墙和入侵防护技术）用在了远离保护范围的外围边界中。 在零信任方法中，通过定义保护范围，我们可以将控制措施尽可能地靠近保护范围以定义微边界。利用我们的新一代技术作为分段网关，我们可以在第 7 层策略中对网络进行分段，并精确控制进出微边界的流量。实际上需要访问环境中敏感数据或资产的用户和资源数量非常有限。通过创建有限、精确和可理解的策略声明，我们就可以限制攻击者成功执行网络攻击的能力。 *** ** * ** *** ## Related Blogs ### [未分类](https://www.paloaltonetworks.com/blog/category/%e6%9c%aa%e5%88%86%e7%b1%bb/?lang=zh-hant&ts=markdown) [#### AI代理已經來臨，威脅也隨之而來](https://www.paloaltonetworks.com/blog/2025/05/ai-agents-threats/?lang=zh-hant) ### [未分类](https://www.paloaltonetworks.com/blog/category/%e6%9c%aa%e5%88%86%e7%b1%bb/?lang=zh-hant&ts=markdown) [#### Strata Copilot - 加速迈向自主网络安全的未来](https://www.paloaltonetworks.com/blog/network-security/strata-copilot/?lang=zh-hans) ### [未分类](https://www.paloaltonetworks.com/blog/category/%e6%9c%aa%e5%88%86%e7%b1%bb/?lang=zh-hant&ts=markdown) [#### 防火墙已死？至少本世纪不会！](https://www.paloaltonetworks.com/blog/2023/08/ngfw-is-not-dead-yet/?lang=zh-hans) ### [未分类](https://www.paloaltonetworks.com/blog/category/%e6%9c%aa%e5%88%86%e7%b1%bb/?lang=zh-hant&ts=markdown) [#### 面对性命攸关的时刻，如何实现可靠的医疗物联网安全](https://www.paloaltonetworks.com/blog/2022/12/medical-iot-security-to-depend-on/?lang=zh-hans) ### [未分类](https://www.paloaltonetworks.com/blog/category/%e6%9c%aa%e5%88%86%e7%b1%bb/?lang=zh-hant&ts=markdown) [#### 利用业界首创的 AIOps for NGFW 革新防火墙运行](https://www.paloaltonetworks.com/blog/2022/03/industry-first-aiops-for-ngfw/?lang=zh-hans) ### [未分类](https://www.paloaltonetworks.com/blog/category/%e6%9c%aa%e5%88%86%e7%b1%bb/?lang=zh-hant&ts=markdown) [#### Prisma Access 是保护远程用户安全的领先云服务](https://www.paloaltonetworks.com/blog/2021/08/prisma-access-leading-cloud-service-secure-remote-users/?lang=zh-hans) ### Subscribe to the Blog! 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