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* 產品  
  ![black arrow pointing left to go back to main navigation](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/arrow-right-black.svg) 產品  
  [AI 支援的網路安全性](https://www.paloaltonetworks.tw/network-security?ts=markdown)
  
  * [透過設計保護 AI](https://www.paloaltonetworks.tw/precision-ai-security/secure-ai-by-design?ts=markdown)
  
  * [Prisma AIRS](https://www.paloaltonetworks.tw/prisma/prisma-ai-runtime-security?ts=markdown)
  
  * [AI 存取安全性](https://www.paloaltonetworks.tw/sase/ai-access-security?ts=markdown)
  
  * [雲端交付的安全服務](https://www.paloaltonetworks.tw/network-security/security-subscriptions?ts=markdown)
  
  * [進階威脅防禦](https://www.paloaltonetworks.tw/network-security/advanced-threat-prevention?ts=markdown)
  
  * [進階 URL Filtering](https://www.paloaltonetworks.tw/network-security/advanced-url-filtering?ts=markdown)
  
  * [Advanced WildFire](https://www.paloaltonetworks.tw/network-security/advanced-wildfire?ts=markdown)
  
  * [進階 DNS 安全性](https://www.paloaltonetworks.tw/network-security/advanced-dns-security?ts=markdown)
  
  * [企業數據遺失防護](https://www.paloaltonetworks.tw/sase/enterprise-data-loss-prevention?ts=markdown)
  
  * [企業 IoT Security](https://www.paloaltonetworks.tw/network-security/enterprise-device-security?ts=markdown)
  
  * [醫療 IoT Security](https://www.paloaltonetworks.tw/network-security/medical-iot-security?ts=markdown)
  
  * [工業 OT 安全性](https://www.paloaltonetworks.tw/network-security/industrial-ot-security?ts=markdown)
  
  * [SaaS 安全性](https://www.paloaltonetworks.tw/sase/saas-security?ts=markdown)
  
  * [新世代防火牆](https://www.paloaltonetworks.tw/network-security/next-generation-firewall?ts=markdown)
  
  * [硬體防火牆](https://www.paloaltonetworks.tw/network-security/hardware-firewall-innovations?ts=markdown)
  
  * [軟體防火牆](https://www.paloaltonetworks.tw/network-security/software-firewalls?ts=markdown)
  
  * [Strata Cloud Manager](https://www.paloaltonetworks.tw/network-security/strata-cloud-manager?ts=markdown)
  
  * [新世代防火牆 SD-WAN](https://www.paloaltonetworks.tw/network-security/sd-wan-subscription?ts=markdown)
  
  * [PAN-OS](https://www.paloaltonetworks.tw/network-security/pan-os?ts=markdown)
  
  * [Panorama](https://www.paloaltonetworks.tw/network-security/panorama?ts=markdown)
  
  * [安全存取服務邊緣](https://www.paloaltonetworks.tw/sase?ts=markdown)
  
  * [Prisma SASE](https://www.paloaltonetworks.tw/sase?ts=markdown)
  
  * [應用程式加速](https://www.paloaltonetworks.tw/sase/app-acceleration?ts=markdown)
  
  * [自主數位體驗管理](https://www.paloaltonetworks.tw/sase/adem?ts=markdown)
  
  * [企業 DLP](https://www.paloaltonetworks.tw/sase/enterprise-data-loss-prevention?ts=markdown)
  
  * [Prisma Access](https://www.paloaltonetworks.tw/sase/access?ts=markdown)
  
  * [Prisma 瀏覽器](https://www.paloaltonetworks.tw/sase/prisma-browser?ts=markdown)
  
  * [Prisma SD-WAN](https://www.paloaltonetworks.tw/sase/sd-wan?ts=markdown)
  
  * [遠端瀏覽器隔離](https://www.paloaltonetworks.tw/sase/remote-browser-isolation?ts=markdown)
  
  * [SaaS 安全性](https://www.paloaltonetworks.tw/sase/saas-security?ts=markdown)  
    [人工智慧驅動的安全性作業平台](https://www.paloaltonetworks.tw/cortex?ts=markdown)
  
  * [雲端安全](https://www.paloaltonetworks.tw/cortex/cloud?ts=markdown)
  
  * [Cortex Cloud](https://www.paloaltonetworks.tw/cortex/cloud?ts=markdown)
  
  * [應用程式安全性](https://www.paloaltonetworks.tw/cortex/cloud/application-security?ts=markdown)
  
  * [雲端狀況安全性](https://www.paloaltonetworks.tw/cortex/cloud/cloud-posture-security?ts=markdown)
  
  * [雲端執行階段安全性](https://www.paloaltonetworks.tw/cortex/cloud/runtime-security?ts=markdown)
  
  * [Prisma Cloud](https://www.paloaltonetworks.tw/prisma/cloud?ts=markdown)
  
  * [AI 驅動的 SOC](https://www.paloaltonetworks.tw/cortex?ts=markdown)
  
  * [Cortex Advanced Email Security](https://www.paloaltonetworks.tw/cortex/advanced-email-security?ts=markdown)
  
  * [Cortex Exposure Management](https://www.paloaltonetworks.tw/cortex/exposure-management?ts=markdown)
  
  * [Cortex XSIAM](https://www.paloaltonetworks.tw/cortex/cortex-xsiam?ts=markdown)
  
  * [Cortex XDR](https://www.paloaltonetworks.tw/cortex/cortex-xdr?ts=markdown)
  
  * [Cortex XSOAR](https://www.paloaltonetworks.tw/cortex/cortex-xsoar?ts=markdown)
  
  * [Cortex Xpanse](https://www.paloaltonetworks.tw/cortex/cortex-xpanse?ts=markdown)
  
  * [Unit 42 託管式偵測與回應](https://www.paloaltonetworks.tw/cortex/managed-detection-and-response?ts=markdown)
  
  * [受管理 XSIAM](https://www.paloaltonetworks.tw/cortex/managed-xsiam?ts=markdown)

* 解決方案  
  ![black arrow pointing left to go back to main navigation](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/arrow-right-black.svg) 解決方案  
  AI 安全性
  
  * [安全的 AI 生態系統](https://www.paloaltonetworks.tw/prisma/prisma-ai-runtime-security?ts=markdown)
  * [安全使用 GenAI](https://www.paloaltonetworks.tw/sase/ai-access-security?ts=markdown)  
    網路安全
  * [雲端網路安全性](https://www.paloaltonetworks.tw/network-security/software-firewalls?ts=markdown)
  * [數據中心安全](https://www.paloaltonetworks.tw/network-security/data-center?ts=markdown)
  * [DNS 安全性](https://www.paloaltonetworks.tw/network-security/advanced-dns-security?ts=markdown)
  * [入侵偵測和防禦](https://www.paloaltonetworks.tw/network-security/advanced-threat-prevention?ts=markdown)
  * [物聯網安全性](https://www.paloaltonetworks.tw/network-security/enterprise-device-security?ts=markdown)
  * [5G 安全性](https://www.paloaltonetworks.tw/network-security/5g-security?ts=markdown)
  * [保護所有應用程式、使用者和位置](https://www.paloaltonetworks.tw/sase/secure-users-data-apps-devices?ts=markdown)
  * [安全的分公司轉型](https://www.paloaltonetworks.tw/sase/secure-branch-transformation?ts=markdown)
  * [在任何裝置上安全工作](https://www.paloaltonetworks.tw/sase/secure-work-on-any-device?ts=markdown)
  * [VPN 取代](https://www.paloaltonetworks.tw/sase/vpn-replacement-for-secure-remote-access?ts=markdown)
  * [網路與網路釣魚安全性](https://www.paloaltonetworks.tw/network-security/advanced-url-filtering?ts=markdown)  
    雲端安全
  * [應用程式安全狀況管理 (ASPM)](https://www.paloaltonetworks.tw/cortex/cloud/application-security-posture-management?ts=markdown)
  * [軟體供應鏈安全性](https://www.paloaltonetworks.tw/cortex/cloud/software-supply-chain-security?ts=markdown)
  * [程式碼安全](https://www.paloaltonetworks.tw/cortex/cloud/code-security?ts=markdown)
  * [雲端安全狀況管理 (CSPM)](https://www.paloaltonetworks.tw/cortex/cloud/cloud-security-posture-management?ts=markdown)
  * [雲端基礎結構權限管理 (CIEM)](https://www.paloaltonetworks.tw/cortex/cloud/cloud-infrastructure-entitlement-management?ts=markdown)
  * [數據安全狀況管理 (DSPM)](https://www.paloaltonetworks.tw/cortex/cloud/data-security-posture-management?ts=markdown)
  * [AI 安全狀況管理 (AI-SPM)](https://www.paloaltonetworks.tw/cortex/cloud/ai-security-posture-management?ts=markdown)
  * [雲端偵測與回應 (CDR)](https://www.paloaltonetworks.tw/cortex/cloud-detection-and-response?ts=markdown)
  * [雲端工作負載防護 (CWP)](https://www.paloaltonetworks.tw/cortex/cloud/cloud-workload-protection?ts=markdown)
  * [Web 應用程式和 API 安全性 (WAAS)](https://www.paloaltonetworks.tw/cortex/cloud/web-app-api-security?ts=markdown)  
    安全營運
  * [雲端偵測與回應](https://www.paloaltonetworks.tw/cortex/cloud-detection-and-response?ts=markdown)
  * [網路安全自動化](https://www.paloaltonetworks.tw/cortex/network-security-automation?ts=markdown)
  * [事件案例管理](https://www.paloaltonetworks.tw/cortex/incident-case-management?ts=markdown)
  * [SOC 自動化](https://www.paloaltonetworks.tw/cortex/security-operations-automation?ts=markdown)
  * [威脅情報管理](https://www.paloaltonetworks.tw/cortex/threat-intel-management?ts=markdown)
  * [託管式偵測與回應](https://www.paloaltonetworks.tw/cortex/managed-detection-and-response?ts=markdown)
  * [攻擊範圍管理](https://www.paloaltonetworks.tw/cortex/cortex-xpanse/attack-surface-management?ts=markdown)
  * [合規性管理](https://www.paloaltonetworks.tw/cortex/cortex-xpanse/compliance-management?ts=markdown)
  * [網際網路營運管理](https://www.paloaltonetworks.tw/cortex/cortex-xpanse/internet-operations-management?ts=markdown)  
    端點安全
  * [端點防護](https://www.paloaltonetworks.tw/cortex/endpoint-protection?ts=markdown)
  * [擴展的偵測與回應](https://www.paloaltonetworks.tw/cortex/detection-and-response?ts=markdown)
  * [勒索軟體防護](https://www.paloaltonetworks.tw/cortex/ransomware-protection?ts=markdown)
  * [數位鑑識](https://www.paloaltonetworks.tw/cortex/digital-forensics?ts=markdown)  
    [產業](https://www.paloaltonetworks.tw/industry?ts=markdown)
  * [公共部門](https://www.paloaltonetworks.com/industry/public-sector)
  * [金融服務](https://www.paloaltonetworks.com/industry/financial-services)
  * [製造](https://www.paloaltonetworks.com/industry/manufacturing)
  * [醫療](https://www.paloaltonetworks.com/industry/healthcare)
  * [中小企業解決方案](https://www.paloaltonetworks.com/industry/small-medium-business-portfolio)

* 服務  
  ![black arrow pointing left to go back to main navigation](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/arrow-right-black.svg) 服務  
  [威脅情報和事件回應服務](https://www.paloaltonetworks.tw/unit42?ts=markdown)
  
  * [評估](https://www.paloaltonetworks.tw/unit42/assess?ts=markdown)
  
  * [AI 安全評估](https://www.paloaltonetworks.tw/unit42/assess/ai-security-assessment?ts=markdown)
  
  * [攻擊面評估](https://www.paloaltonetworks.tw/unit42/assess/attack-surface-assessment?ts=markdown)
  
  * [入侵整備審查](https://www.paloaltonetworks.tw/unit42/assess/breach-readiness-review?ts=markdown)
  
  * [BEC 整備評估](https://www.paloaltonetworks.com/bec-readiness-assessment)
  
  * [雲端安全性評估](https://www.paloaltonetworks.com/unit42/assess/cloud-security-assessment)
  
  * [入侵評估](https://www.paloaltonetworks.tw/unit42/assess/compromise-assessment?ts=markdown)
  
  * [網路風險評估](https://www.paloaltonetworks.tw/unit42/assess/cyber-risk-assessment?ts=markdown)
  
  * [併購和收購網路盡職調查](https://www.paloaltonetworks.tw/unit42/assess/mergers-acquisitions-cyber-due-dilligence?ts=markdown)
  
  * [滲透測試](https://www.paloaltonetworks.tw/unit42/assess/penetration-testing?ts=markdown)
  
  * [紫隊演習](https://www.paloaltonetworks.tw/unit42/assess/purple-teaming?ts=markdown)
  
  * [勒索軟體整備評估](https://www.paloaltonetworks.tw/unit42/assess/ransomware-readiness-assessment?ts=markdown)
  
  * [SOC 評估](https://www.paloaltonetworks.com/unit42/assess/cloud-security-assessment)
  
  * [供應鏈風險評估](https://www.paloaltonetworks.tw/unit42/assess/supply-chain-risk-assessment?ts=markdown)
  
  * [桌面演習](https://www.paloaltonetworks.tw/unit42/assess/tabletop-exercise?ts=markdown)
  
  * [Unit 42 聘用團隊](https://www.paloaltonetworks.tw/unit42/retainer?ts=markdown)
  
  * [回應](https://www.paloaltonetworks.tw/unit42/respond?ts=markdown)
  
  * [雲端事件回應](https://www.paloaltonetworks.tw/unit42/respond/cloud-incident-response?ts=markdown)
  
  * [數位鑑識](https://www.paloaltonetworks.tw/unit42/respond/digital-forensics?ts=markdown)
  
  * [事件回應](https://www.paloaltonetworks.tw/unit42/respond/incident-response?ts=markdown)
  
  * [受管理偵測與回應](https://www.paloaltonetworks.tw/unit42/respond/managed-detection-response?ts=markdown)
  
  * [受管理威脅搜補](https://www.paloaltonetworks.tw/unit42/respond/managed-threat-hunting?ts=markdown)
  
  * [受管理 XSIAM](https://www.paloaltonetworks.tw/cortex/managed-xsiam?ts=markdown)
  
  * [Unit 42 聘用團隊](https://www.paloaltonetworks.tw/unit42/retainer?ts=markdown)
  
  * [轉型](https://www.paloaltonetworks.tw/unit42/transform?ts=markdown)
  
  * [投資者關係計劃的制定和審查](https://www.paloaltonetworks.tw/unit42/transform/incident-response-plan-development-review?ts=markdown)
  
  * [安全性計劃設計](https://www.paloaltonetworks.tw/unit42/transform/security-program-design?ts=markdown)
  
  * [虛擬資安長](https://www.paloaltonetworks.tw/unit42/transform/vciso?ts=markdown)
  
  * [零信任諮詢](https://www.paloaltonetworks.com/unit42/assess/cloud-security-assessment)  
    [全球客戶服務](https://www.paloaltonetworks.tw/services?ts=markdown)
  
  * [教育與訓練](https://www.paloaltonetworks.com/services/education)
  
  * [專業服務](https://www.paloaltonetworks.com/services/consulting)
  
  * [成功工具](https://www.paloaltonetworks.com/services/customer-success-tools)
  
  * [支援服務](https://www.paloaltonetworks.com/services/solution-assurance)
  
  * [客戶成功](https://www.paloaltonetworks.com/services/customer-success)  
    [![](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/logo-unit-42.svg)  
    Unit 42 聘用團隊
    針對企業需求所量身打造，您可以選擇將聘用團隊時數分配至任何產品，包括主動式網路風險管理服務。了解您如何為世界級的 Unit 42 事件回應團隊設定快速撥號。
    進一步了解](https://www.paloaltonetworks.tw/unit42/retainer?ts=markdown)

* 合作夥伴  
  ![black arrow pointing left to go back to main navigation](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/arrow-right-black.svg) 合作夥伴  
  NextWave 合作夥伴
  
  * [NextWave 合作夥伴社群](https://www.paloaltonetworks.com/partners)
  * [雲端服務供應商](https://www.paloaltonetworks.com/partners/nextwave-for-csp)
  * [全球系統整合商](https://www.paloaltonetworks.com/partners/nextwave-for-gsi)
  * [技術合作夥伴](https://www.paloaltonetworks.com/partners/technology-partners)
  * [服務供應商](https://www.paloaltonetworks.com/partners/service-providers)
  * [解決方案供應商](https://www.paloaltonetworks.com/partners/nextwave-solution-providers)
  * [受管理安全性服務供應商](https://www.paloaltonetworks.com/partners/managed-security-service-providers)  
    採取動作
  * [入口網站登入](https://paloaltonetworks.my.site.com/NextWavePartnerProgram/s/partnerregistration?type=becomepartner)
  * [託管服務計劃](https://www.paloaltonetworks.com/partners/managed-security-services-provider-program)
  * [成為合作夥伴](https://paloaltonetworks.my.site.com/NextWavePartnerProgram/s/partnerregistration?type=becomepartner)
  * [要求存取權](https://paloaltonetworks.my.site.com/NextWavePartnerProgram/s/partnerregistration?type=requestaccess)
  * [尋找合作夥伴](https://paloaltonetworks.my.site.com/NextWavePartnerProgram/s/partnerlocator)  
    [CYBERFORCE
    CYBERFORCE 代表由於本身的安全專業知識而獲得信賴的前 1% 合作夥伴工程師。
    進一步了解](https://www.paloaltonetworks.com/cyberforce)

* 公司  
  ![black arrow pointing left to go back to main navigation](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/arrow-right-black.svg) 公司  
  Palo Alto Networks
  
  * [關於我們](https://www.paloaltonetworks.tw/about-us?ts=markdown)
  * [管理團隊](https://www.paloaltonetworks.com/about-us/management)
  * [投資人關係](https://investors.paloaltonetworks.com/)
  * [地點](https://www.paloaltonetworks.com/about-us/locations)
  * [道德規範與合規性](https://www.paloaltonetworks.com/company/ethics-and-compliance)
  * [企業責任](https://www.paloaltonetworks.com/about-us/corporate-responsibility)
  * [軍人與退伍軍人](https://jobs.paloaltonetworks.com/military)  
    [為何選擇 Palo Alto Networks？](https://www.paloaltonetworks.tw/why-paloaltonetworks?ts=markdown)
  * [Precision AI 安全性](https://www.paloaltonetworks.tw/precision-ai-security?ts=markdown)
  * [我們的平台方法](https://www.paloaltonetworks.tw/why-paloaltonetworks/platformization?ts=markdown)
  * [加速您的網路安全轉型](https://www.paloaltonetworks.com/why-paloaltonetworks/nam-cxo-portfolio)
  * [獎項和認可](https://www.paloaltonetworks.com/about-us/awards)
  * [客戶案例](https://www.paloaltonetworks.tw/customers?ts=markdown)
  * [全球認證](https://www.paloaltonetworks.com/legal-notices/trust-center/compliance)
  * [信任 360 計劃](https://www.paloaltonetworks.com/resources/whitepapers/trust-360)  
    人才招募
  * [概觀](https://jobs.paloaltonetworks.com/)
  * [文化與社福](https://jobs.paloaltonetworks.com/culture)  
    [Newsweek 最受喜愛工作場所名單
    真正為員工著想的企業
    閱讀更多內容](https://www.paloaltonetworks.com/company/press/2021/palo-alto-networks-secures-top-ranking-on-newsweek-s-most-loved-workplaces-list-for-2021)

* 更多  
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3. [什麼是虛擬防火牆？](https://www.paloaltonetworks.tw/cyberpedia/what-is-a-virtual-firewall?ts=markdown)

# 什麼是虛擬防火牆？

虛擬防火牆 (也稱為雲端防火牆) 是專為難以部署或無法部署硬體防火牆的環境 (例如公有雲和私有雲環境、軟體定義網路 (SDN) 和軟體定義廣域網路 (SD-WAN)) 設計的網路安全解決方案。

和[硬體防火牆](https://www.paloaltonetworks.com/cyberpedia/what-is-a-firewall)一樣，虛擬防火牆可授予或拒絕不受信任區域和受信任區域之間流量的網路存取。與實際在數據中心內部部署的硬體防火牆不同，虛擬防火牆實質上是軟體，因此是保護虛擬環境的理想選擇。

虛擬防火牆也能夠做為新世代防火牆的虛擬化執行個體進行部署。 這些進階的虛擬防火牆可以檢查和控制公有雲環境中的南北向流量，並且區隔數據中心和分公司內部的東西向流量，同時透過微區隔 (也就是將工作負載彼此隔離並個別保護工作負載) 插入進階威脅防禦措施。

**為什麼使用虛擬防火牆？**

虛擬環境雖然有利於加快創新速度和降低運算成本，不過虛擬環境也存在傳統數據中心並未出現的更多安全性和合規性風險。

規避標準周邊安全措施的新型攻擊通常會利用分散式基礎結構，其中的應用程式、數據和工作負載是從多個端點進行部署，並非從單一專用資源部署，因此難以獲得全面的可視性和安全性。

使用者現在期望的虛擬化環境提供服務的速度是另一個安全問題。安全專業人員必須運用 DevOps 的速度因應現今跨越分散式環境的安全挑戰。

正確的新世代虛擬防火牆有助於您對於整個 IT 環境 (包括私有雲、公有雲和分公司位置) 提供一致的網路安全狀況。在 [3 個虛擬防火牆使用案例](https://www.paloaltonetworks.com/cyberpedia/3-virtual-firewall-use-cases)中找到核心使用案例的詳細資訊。

**考慮虛擬防火牆？考慮提出這些問題**

研究虛擬防火牆選項的企業可能會想要考慮：

* **虛擬防火牆是否提供完整範圍的威脅防禦？**  
  虛擬化環境需要真正的威脅防禦。尋求的基本功能包括入侵防禦、URL 篩選、SSL 解密、DNS 安全性、檔案封鎖、網路反惡意軟體和拒絕服務保護。
* **虛擬防火牆能否縮小攻擊範圍？**  
  虛擬防火牆通常提供橫向移動保護 (針對私有雲內部的流量)，可以縮小虛擬化環境中的攻擊範圍。
* **虛擬防火牆是否提供以應用程式為中心的安全政策？**  
  虛擬化環境具有隨需交付應用程式的能力，這表示防火牆應該具有以應用程式為中心的安全性政策功能，例如對於任何分類、行為或位置識別所有應用程式的能力。
* **虛擬防火牆是否能夠自動佈建和擴展？**  
  在某些情況下，可以自動佈建虛擬防火牆，藉以達成持續整合和持續交付 (CI/CD) 的期望，甚至可以直接佈建到 DevOps 工作流程中。
* **虛擬防火牆是否允許跨越環境的可視性？**  
  在多個虛擬化環境中管理虛擬防火牆部署的能力可以減少時間、精力、錯誤和費用。

請[造訪我們的網站](https://www.paloaltonetworks.tw/network-security/vm-series-virtual-next-generation-firewall?ts=markdown)，深入瞭解有關虛擬防火牆如何保護虛擬化環境以實現創新和敏捷性的詳細資訊。  
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