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* 产品  
  ![black arrow pointing left to go back to main navigation](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/arrow-right-black.svg) 产品  
  [人工智能驱动的网络安全平台](https://www.paloaltonetworks.cn/network-security?ts=markdown)
  
  * [Secure AI by Design](https://www.paloaltonetworks.cn/precision-ai-security/secure-ai-by-design?ts=markdown)
  
  * [Prisma AIRS](https://www.paloaltonetworks.cn/prisma/prisma-ai-runtime-security?ts=markdown)
  
  * [AI Access Security](https://www.paloaltonetworks.cn/sase/ai-access-security?ts=markdown)
  
  * [云交付的安全服务](https://www.paloaltonetworks.cn/network-security/security-subscriptions?ts=markdown)
  
  * [高级威胁预防](https://www.paloaltonetworks.cn/network-security/advanced-threat-prevention?ts=markdown)
  
  * [Advanced URL Filtering](https://www.paloaltonetworks.cn/network-security/advanced-url-filtering?ts=markdown)
  
  * [Advanced WildFire](https://www.paloaltonetworks.cn/network-security/advanced-wildfire?ts=markdown)
  
  * [Advanced DNS Security](https://www.paloaltonetworks.cn/network-security/advanced-dns-security?ts=markdown)
  
  * [企业数据丢失防护](https://www.paloaltonetworks.cn/sase/enterprise-data-loss-prevention?ts=markdown)
  
  * [Enterprise IoT Security](https://www.paloaltonetworks.cn/network-security/enterprise-device-security?ts=markdown)
  
  * [医疗物联网安全](https://www.paloaltonetworks.cn/network-security/medical-iot-security?ts=markdown)
  
  * [工业 OT 安全](https://www.paloaltonetworks.cn/network-security/industrial-ot-security?ts=markdown)
  
  * [SaaS Security](https://www.paloaltonetworks.cn/sase/saas-security?ts=markdown)
  
  * [新一代防火墙](https://www.paloaltonetworks.cn/network-security/next-generation-firewall?ts=markdown)
  
  * [硬件防火墙](https://www.paloaltonetworks.cn/network-security/hardware-firewall-innovations?ts=markdown)
  
  * [软件防火墙](https://www.paloaltonetworks.cn/network-security/software-firewalls?ts=markdown)
  
  * [Strata Cloud Manager](https://www.paloaltonetworks.cn/network-security/strata-cloud-manager?ts=markdown)
  
  * [SD-WAN for NGFW](https://www.paloaltonetworks.cn/network-security/sd-wan-subscription?ts=markdown)
  
  * [PAN-OS](https://www.paloaltonetworks.cn/network-security/pan-os?ts=markdown)
  
  * [Panorama](https://www.paloaltonetworks.cn/network-security/panorama?ts=markdown)
  
  * [Secure Access Service Edge](https://www.paloaltonetworks.cn/sase?ts=markdown)
  
  * [Prisma SASE](https://www.paloaltonetworks.cn/sase?ts=markdown)
  
  * [应用加速](https://www.paloaltonetworks.cn/sase/app-acceleration?ts=markdown)
  
  * [自主数字体验管理](https://www.paloaltonetworks.cn/sase/adem?ts=markdown)
  
  * [企业 DLP](https://www.paloaltonetworks.cn/sase/enterprise-data-loss-prevention?ts=markdown)
  
  * [Prisma Access](https://www.paloaltonetworks.cn/sase/access?ts=markdown)
  
  * [Prisma 浏览器](https://www.paloaltonetworks.cn/sase/prisma-browser?ts=markdown)
  
  * [Prisma SD-WAN](https://www.paloaltonetworks.cn/sase/sd-wan?ts=markdown)
  
  * [远程浏览器隔离](https://www.paloaltonetworks.cn/sase/remote-browser-isolation?ts=markdown)
  
  * [SaaS Security](https://www.paloaltonetworks.cn/sase/saas-security?ts=markdown)  
    [基于 AI 的安全运营平台](https://www.paloaltonetworks.cn/cortex?ts=markdown)
  
  * [Cloud Security](https://www.paloaltonetworks.cn/cortex/cloud?ts=markdown)
  
  * [Cortex Cloud](https://www.paloaltonetworks.cn/cortex/cloud?ts=markdown)
  
  * [应用安全](https://www.paloaltonetworks.cn/cortex/cloud/application-security?ts=markdown)
  
  * [云态势安全](https://www.paloaltonetworks.cn/cortex/cloud/cloud-posture-security?ts=markdown)
  
  * [云运行时安全](https://www.paloaltonetworks.cn/cortex/cloud/runtime-security?ts=markdown)
  
  * [Prisma Cloud](https://www.paloaltonetworks.cn/prisma/cloud?ts=markdown)
  
  * [Unit 42 托管检测和响应](https://www.paloaltonetworks.cn/cortex/managed-detection-and-response?ts=markdown)
  
  * [人工智能驱动的 SOC](https://www.paloaltonetworks.cn/cortex?ts=markdown)
  
  * [Cortex Advanced Email Security](https://www.paloaltonetworks.cn/cortex/advanced-email-security?ts=markdown)
  
  * [Cortex Exposure Management](https://www.paloaltonetworks.cn/cortex/exposure-management?ts=markdown)
  
  * [Cortex XSIAM](https://www.paloaltonetworks.cn/cortex/cortex-xsiam?ts=markdown)
  
  * [Cortex XDR](https://www.paloaltonetworks.cn/cortex/cortex-xdr?ts=markdown)
  
  * [Cortex XSOAR](https://www.paloaltonetworks.cn/cortex/cortex-xsoar?ts=markdown)
  
  * [Cortex Xpanse](https://www.paloaltonetworks.cn/cortex/cortex-xpanse?ts=markdown)
  
  * [托管 XSIAM](https://www.paloaltonetworks.cn/cortex/managed-xsiam?ts=markdown)

* 解决方案  
  ![black arrow pointing left to go back to main navigation](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/arrow-right-black.svg) 解决方案  
  AI 安全
  
  * [安全的人工智能生态系统](https://www.paloaltonetworks.cn/prisma/prisma-ai-runtime-security?ts=markdown)
  * [安全使用 GenAI](https://www.paloaltonetworks.cn/sase/ai-access-security?ts=markdown)  
    网络安全
  * [云网络安全](https://www.paloaltonetworks.cn/network-security/software-firewalls?ts=markdown)
  * [数据中心安全](https://www.paloaltonetworks.cn/network-security/data-center?ts=markdown)
  * [DNS Security](https://www.paloaltonetworks.cn/network-security/advanced-dns-security?ts=markdown)
  * [入侵检测和防御](https://www.paloaltonetworks.cn/network-security/advanced-threat-prevention?ts=markdown)
  * [IoT Security](https://www.paloaltonetworks.cn/network-security/enterprise-device-security?ts=markdown)
  * [5G 安全](https://www.paloaltonetworks.cn/network-security/5g-security?ts=markdown)
  * [确保所有应用、用户和位置的安全](https://www.paloaltonetworks.cn/sase/secure-users-data-apps-devices?ts=markdown)
  * [确保分支机构转型的安全](https://www.paloaltonetworks.cn/sase/secure-branch-transformation?ts=markdown)
  * [确保任何设备上的工作安全](https://www.paloaltonetworks.cn/sase/secure-work-on-any-device?ts=markdown)
  * [VPN 替代](https://www.paloaltonetworks.cn/sase/vpn-replacement-for-secure-remote-access?ts=markdown)
  * [Web 和网络钓鱼安全](https://www.paloaltonetworks.cn/network-security/advanced-url-filtering?ts=markdown)  
    云安全
  * [应用安全态势管理 (ASPM)](https://www.paloaltonetworks.cn/cortex/cloud/application-security-posture-management?ts=markdown)
  * [软件供应链安全](https://www.paloaltonetworks.cn/cortex/cloud/software-supply-chain-security?ts=markdown)
  * [代码安全](https://www.paloaltonetworks.cn/cortex/cloud/code-security?ts=markdown)
  * [云安全态势管理 (CSPM)](https://www.paloaltonetworks.cn/cortex/cloud/cloud-security-posture-management?ts=markdown)
  * [云基础架构权限管理 (CIEM)](https://www.paloaltonetworks.cn/cortex/cloud/cloud-infrastructure-entitlement-management?ts=markdown)
  * [数据安全态势管理 (DSPM)](https://www.paloaltonetworks.cn/cortex/cloud/data-security-posture-management?ts=markdown)
  * [AI 安全态势管理 (AI-SPM)](https://www.paloaltonetworks.cn/cortex/cloud/ai-security-posture-management?ts=markdown)
  * [云检测与响应 (CDR)](https://www.paloaltonetworks.cn/cortex/cloud-detection-and-response?ts=markdown)
  * [云工作负载保护 (CWP)](https://www.paloaltonetworks.cn/cortex/cloud/cloud-workload-protection?ts=markdown)
  * [Web 应用及 API 安全 (WAAS)](https://www.paloaltonetworks.cn/cortex/cloud/web-app-api-security?ts=markdown)  
    安全运营
  * [云检测和响应](https://www.paloaltonetworks.cn/cortex/cloud-detection-and-response?ts=markdown)
  * [网络安全自动化](https://www.paloaltonetworks.cn/cortex/network-security-automation?ts=markdown)
  * [事件案例管理](https://www.paloaltonetworks.cn/cortex/incident-case-management?ts=markdown)
  * [SOC 自动化](https://www.paloaltonetworks.cn/cortex/security-operations-automation?ts=markdown)
  * [威胁情报管理](https://www.paloaltonetworks.cn/cortex/threat-intel-management?ts=markdown)
  * [托管的检测和响应](https://www.paloaltonetworks.cn/cortex/managed-detection-and-response?ts=markdown)
  * [攻击面管理](https://www.paloaltonetworks.cn/cortex/cortex-xpanse/attack-surface-management?ts=markdown)
  * [合规性管理](https://www.paloaltonetworks.cn/cortex/cortex-xpanse/compliance-management?ts=markdown)
  * [互联网运营管理](https://www.paloaltonetworks.cn/cortex/cortex-xpanse/internet-operations-management?ts=markdown)  
    端点安全
  * [端点防护](https://www.paloaltonetworks.cn/cortex/endpoint-protection?ts=markdown)
  * [扩展的检测和响应](https://www.paloaltonetworks.cn/cortex/detection-and-response?ts=markdown)
  * [勒索软件防护](https://www.paloaltonetworks.cn/cortex/ransomware-protection?ts=markdown)
  * [数字取证](https://www.paloaltonetworks.cn/cortex/digital-forensics?ts=markdown)  
    [行业](https://www.paloaltonetworks.cn/industry?ts=markdown)
  * [公共部门](https://www.paloaltonetworks.com/industry/public-sector)
  * [金融服务](https://www.paloaltonetworks.com/industry/financial-services)
  * [制造](https://www.paloaltonetworks.com/industry/manufacturing)
  * [医疗保健](https://www.paloaltonetworks.com/industry/healthcare)
  * [中小型企业解决方案](https://www.paloaltonetworks.com/industry/small-medium-business-portfolio)

* 服务  
  ![black arrow pointing left to go back to main navigation](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/arrow-right-black.svg) 服务  
  [威胁情报和事件响应服务](https://www.paloaltonetworks.cn/unit42?ts=markdown)
  
  * [评估](https://www.paloaltonetworks.cn/unit42/assess?ts=markdown)
  
  * [AI 安全评估](https://www.paloaltonetworks.cn/unit42/assess/ai-security-assessment?ts=markdown)
  
  * [攻击面评估](https://www.paloaltonetworks.cn/unit42/assess/attack-surface-assessment?ts=markdown)
  
  * [防泄露准备工作审核](https://www.paloaltonetworks.cn/unit42/assess/breach-readiness-review?ts=markdown)
  
  * [BEC 准备情况评估](https://www.paloaltonetworks.com/bec-readiness-assessment)
  
  * [云安全评估](https://www.paloaltonetworks.com/unit42/assess/cloud-security-assessment)
  
  * [入侵评估](https://www.paloaltonetworks.cn/unit42/assess/compromise-assessment?ts=markdown)
  
  * [网络风险评估](https://www.paloaltonetworks.cn/unit42/assess/cyber-risk-assessment?ts=markdown)
  
  * [并购网络尽职调查](https://www.paloaltonetworks.cn/unit42/assess/mergers-acquisitions-cyber-due-dilligence?ts=markdown)
  
  * [渗透测试](https://www.paloaltonetworks.cn/unit42/assess/penetration-testing?ts=markdown)
  
  * [紫队演习](https://www.paloaltonetworks.cn/unit42/assess/purple-teaming?ts=markdown)
  
  * [勒索软件就绪评估](https://www.paloaltonetworks.cn/unit42/assess/ransomware-readiness-assessment?ts=markdown)
  
  * [SOC 评估](https://www.paloaltonetworks.com/unit42/assess/soc-assessment)
  
  * [供应链风险评估](https://www.paloaltonetworks.cn/unit42/assess/supply-chain-risk-assessment?ts=markdown)
  
  * [桌面演习](https://www.paloaltonetworks.cn/unit42/assess/tabletop-exercise?ts=markdown)
  
  * [Unit 42 顾问人员](https://www.paloaltonetworks.cn/unit42/retainer?ts=markdown)
  
  * [响应](https://www.paloaltonetworks.cn/unit42/respond?ts=markdown)
  
  * [云事故响应](https://www.paloaltonetworks.cn/unit42/respond/cloud-incident-response?ts=markdown)
  
  * [数字取证](https://www.paloaltonetworks.cn/unit42/respond/digital-forensics?ts=markdown)
  
  * [事件响应](https://www.paloaltonetworks.cn/unit42/respond/incident-response?ts=markdown)
  
  * [托管检测与响应](https://www.paloaltonetworks.cn/unit42/respond/managed-detection-response?ts=markdown)
  
  * [托管威胁追踪](https://www.paloaltonetworks.cn/unit42/respond/managed-threat-hunting?ts=markdown)
  
  * [托管 XSIAM](https://www.paloaltonetworks.cn/cortex/managed-xsiam?ts=markdown)
  
  * [Unit 42 顾问人员](https://www.paloaltonetworks.cn/unit42/retainer?ts=markdown)
  
  * [转型](https://www.paloaltonetworks.cn/unit42/transform?ts=markdown)
  
  * [事故响应计划制定与审核](https://www.paloaltonetworks.cn/unit42/transform/incident-response-plan-development-review?ts=markdown)
  
  * [安全计划设计](https://www.paloaltonetworks.cn/unit42/transform/security-program-design?ts=markdown)
  
  * [虚拟 CISO](https://www.paloaltonetworks.cn/unit42/transform/vciso?ts=markdown)
  
  * [零信任咨询](https://www.paloaltonetworks.com/unit42/transform/zero-trust-advisory)  
    [全球客户服务](https://www.paloaltonetworks.cn/services?ts=markdown)
  
  * [教育与培训](https://www.paloaltonetworks.com/services/education)
  
  * [专业服务](https://www.paloaltonetworks.com/services/consulting)
  
  * [成功工具](https://www.paloaltonetworks.com/services/customer-success-tools)
  
  * [支持服务](https://www.paloaltonetworks.com/services/solution-assurance)
  
  * [客户成功](https://www.paloaltonetworks.com/services/customer-success)  
    [![](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/logo-unit-42.svg)  
    Unit 42 顾问人员
    为满足企业的需求而定制，您可以选择将顾问人员工时数分配给我们的任意产品，包括主动网络风险管理服务。了解如何一键呼叫世界一流的 Unit 42 事故响应团队。
    了解更多](https://www.paloaltonetworks.cn/unit42/retainer?ts=markdown)

* 合作伙伴  
  ![black arrow pointing left to go back to main navigation](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/arrow-right-black.svg) 合作伙伴  
  NextWave 合作伙伴
  
  * [NextWave 合作伙伴社区](https://www.paloaltonetworks.com/partners)
  * [云服务提供商](https://www.paloaltonetworks.com/partners/nextwave-for-csp)
  * [全球系统集成商](https://www.paloaltonetworks.com/partners/nextwave-for-gsi)
  * [技术合作伙伴](https://www.paloaltonetworks.com/partners/technology-partners)
  * [服务提供商](https://www.paloaltonetworks.com/partners/service-providers)
  * [解决方案提供商](https://www.paloaltonetworks.com/partners/nextwave-solution-providers)
  * [托管安全服务提供商](https://www.paloaltonetworks.com/partners/managed-security-service-providers)  
    采取行动
  * [门户网站登录](https://www.paloaltonetworks.com/partners/nextwave-partner-portal)
  * [管理的服务计划](https://www.paloaltonetworks.com/partners/managed-security-services-provider-program)
  * [成为合作伙伴](https://paloaltonetworks.my.site.com/NextWavePartnerProgram/s/partnerregistration?type=becomepartner)
  * [请求访问](https://paloaltonetworks.my.site.com/NextWavePartnerProgram/s/partnerregistration?type=requestaccess)
  * [查找合作伙伴](https://paloaltonetworks.my.site.com/NextWavePartnerProgram/s/partnerlocator)  
    [CYBERFORCE
    CYBERFORCE 代表了因其安全专业知识而值得信赖的前 1% 的合作伙伴工程师。
    了解更多](https://www.paloaltonetworks.com/cyberforce)

* 公司  
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  Palo Alto Networks
  
  * [关于我们](https://www.paloaltonetworks.cn/about-us?ts=markdown)
  * [管理团队](https://www.paloaltonetworks.com/about-us/management)
  * [投资者关系](https://investors.paloaltonetworks.com/)
  * [地点](https://www.paloaltonetworks.com/about-us/locations)
  * [道德与合规性](https://www.paloaltonetworks.com/company/ethics-and-compliance)
  * [企业责任](https://www.paloaltonetworks.com/about-us/corporate-responsibility)
  * [军人和退伍军人](https://jobs.paloaltonetworks.com/military)  
    [为什么选择 Palo Alto Networks？](https://www.paloaltonetworks.cn/why-paloaltonetworks?ts=markdown)
  * [Precision AI 安全](https://www.paloaltonetworks.cn/precision-ai-security?ts=markdown)
  * [我们的平台方法](https://www.paloaltonetworks.cn/why-paloaltonetworks/platformization?ts=markdown)
  * [加速网络安全转型](https://www.paloaltonetworks.com/why-paloaltonetworks/nam-cxo-portfolio)
  * [获得的奖项与表彰](https://www.paloaltonetworks.com/about-us/awards)
  * [客户案例](https://www.paloaltonetworks.cn/customers?ts=markdown)
  * [全球认证](https://www.paloaltonetworks.com/legal-notices/trust-center/compliance)
  * [全方位信任计划](https://www.paloaltonetworks.com/resources/whitepapers/trust-360)  
    职业生涯
  * [概述](https://jobs.paloaltonetworks.com/)
  * [文化与福利](https://jobs.paloaltonetworks.com/culture)  
    [《新闻周刊》评选出的最受欢迎的工作场所
    善待员工的企业
    阅读更多](https://www.paloaltonetworks.com/company/press/2021/palo-alto-networks-secures-top-ranking-on-newsweek-s-most-loved-workplaces-list-for-2021)

* 更多内容  
  ![black arrow pointing left to go back to main navigation](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/arrow-right-black.svg) 更多内容  
  资源
  
  * [博客](https://www.paloaltonetworks.com/blog/?lang=zh-hans)
  * [Unit 42 威胁研究博客](https://unit42.paloaltonetworks.com/)
  * [社区](https://www.paloaltonetworks.com/communities)
  * [内容库](https://www.paloaltonetworks.cn/resources?ts=markdown)
  * [Cyberpedia](https://www.paloaltonetworks.cn/cyberpedia?ts=markdown)
  * [技术内幕](https://techinsider.paloaltonetworks.com/)
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2. [Network Security](https://www.paloaltonetworks.com/cyberpedia/network-security?ts=markdown)
3. [什么是 VPN 集中器？](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator?ts=markdown)  
   目录

* [什么是 VPN 网关？](https://www.paloaltonetworks.com/cyberpedia/what-is-a-vpn-gateway?ts=markdown)
  * [VPN 网关如何工作？](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-gateway#how?ts=markdown)
  * [VPN 网关的优势](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-gateway#benefits?ts=markdown)
  * [VPN 网关的缺点](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-gateway#disadvantages?ts=markdown)
  * [VPN 网关使用案例](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-gateway#use-cases?ts=markdown)
  * [VPN 网关常见问题](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-gateway#faq?ts=markdown)
* 什么是 VPN 集中器？
  * [VPN 集中器如何工作？](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#how?ts=markdown)
  * [为什么要使用 VPN 集中器？](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#why?ts=markdown)
  * [VPN 集中器的优势](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#benefits?ts=markdown)
  * [VPN 集中器的缺点](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#disadvantages?ts=markdown)
  * [VPN 集中器加密协议类型](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#types?ts=markdown)
  * [VPN 集中器与 VPN 路由器](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-vpn-router?ts=markdown)
  * [VPN 集中器与站点到站点 VPN](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-site-to-site-vpn?ts=markdown)
  * [VPN 集中器与 IPsec 加密](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-ipsec-encryption?ts=markdown)
  * [VPN 集中器与 VPN 客户端](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-vpn-client?ts=markdown)
* [VPN 集中器常见问题](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#faq?ts=markdown)

# 什么是 VPN 集中器？

目录

* * [VPN 集中器如何工作？](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#how?ts=markdown)
  * [为什么要使用 VPN 集中器？](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#why?ts=markdown)
  * [VPN 集中器的优势](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#benefits?ts=markdown)
  * [VPN 集中器的缺点](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#disadvantages?ts=markdown)
  * [VPN 集中器加密协议类型](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#types?ts=markdown)
  * [VPN 集中器与 VPN 路由器](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-vpn-router?ts=markdown)
  * [VPN 集中器与站点到站点 VPN](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-site-to-site-vpn?ts=markdown)
  * [VPN 集中器与 IPsec 加密](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-ipsec-encryption?ts=markdown)
  * [VPN 集中器与 VPN 客户端](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-vpn-client?ts=markdown)
* [VPN 集中器常见问题](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#faq?ts=markdown)

1. VPN 集中器如何工作？

* * [VPN 集中器如何工作？](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#how?ts=markdown)
  * [为什么要使用 VPN 集中器？](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#why?ts=markdown)
  * [VPN 集中器的优势](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#benefits?ts=markdown)
  * [VPN 集中器的缺点](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#disadvantages?ts=markdown)
  * [VPN 集中器加密协议类型](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#types?ts=markdown)
  * [VPN 集中器与 VPN 路由器](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-vpn-router?ts=markdown)
  * [VPN 集中器与站点到站点 VPN](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-site-to-site-vpn?ts=markdown)
  * [VPN 集中器与 IPsec 加密](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-ipsec-encryption?ts=markdown)
  * [VPN 集中器与 VPN 客户端](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#vpn-concentrator-vs-vpn-client?ts=markdown)
* [VPN 集中器常见问题](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-concentrator#faq?ts=markdown)  
  ![What Is a VPN Concentrator](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/cyberpedia/video-thumbnail-what-is-a-vpn-concentrator.png)  
  close

VPN 集中器是一种网络设备，用于管理多个用户的 VPN 流量。

它能建立和控制 VPN 连接，让远程工作人员安全地访问企业网络。该设备支持大量同时连接，确保远程访问既可靠又安全。对于拥有大量远程工作人员或多个分支机构的组织来说，安全的远程访问至关重要。

## VPN 集中器如何工作？

![VPN 集中器部署在公司总部的示意图，其中包括分支机构和客户端 VPN。](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/cyberpedia/how-vpn-concentrator-works.png "VPN 集中器部署在公司总部的示意图，其中包括分支机构和客户端 VPN。")

[*VPN（虚拟专用网络）*](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn?ts=markdown) 集中器是多个加密 VPN 通道的强大连接器和管理器。 [*VPN 隧道*](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-vpn-tunnel?ts=markdown) 的强大连接器和管理器。它从网络边缘开始发挥作用，确保所有进出数据都通过其安全通道。集中器会对远程用户进行身份验证，只有在验证了他们的凭证后，才会允许他们访问网络。一旦用户通过验证，集中器就会为其分配一个唯一的 IP 地址，从而实现网络内的个人身份识别。

该设备负责处理加密和解密的繁重工作，确保任何未经授权的方面都无法读取收发自企业网络的数据。通过管理所有 VPN 连接，集中器可保持进出企业网络的数据流量的完整性和机密性。这一功能对于防止数据泄露和确保远程或移动员工的安全通信至关重要。

此外，集中器还维护安全数据传输所需的加密密钥。它使用既定的 [*VPN 协议*](https://www.paloaltonetworks.cn/cyberpedia/types-of-vpn-protocols?ts=markdown) 管理创建、维护和终止加密隧道的复杂性，确保所有用户的无缝和安全连接。对于要求高度保护数据的公司和需要从不同地点访问敏感企业资源的员工来说，这一流程至关重要。

## 为什么要使用 VPN 集中器？

VPN 集中器在企业环境中用于处理大量 VPN 连接。其目的是为远程访问企业资源的员工建立和管理安全通信。该设备具有路由器的功能，专门用于创建、配置和管理 VPN 网络流量。它是远程连接的中心点，以受控和高效的方式将安全加密的数据导入和导出多个端点。

各组织采用 VPN 集中器来支持同时连接，在不影响网络安全的情况下实现远程访问。在大规模运营中，员工、利益相关者或分支机构要求可靠、一致地访问中央网络以进行日常运营，这种能力是必不可少的。

## VPN 集中器的优势

### 无缝集成

VPN 客户端软件启动后，会自动连接到 VPN 集中器。这种自动隧道创建功能可实现无缝的用户体验，无需对每个会话进行手动配置。

### 集中控制

VPN 集中器可集中管理网络连接，从而简化对 VPN 访问和安全策略的管理监督。

### 高级路由功能

作为一种先进的路由设备，VPN 集中器管理着比标准路由器更复杂的协议和算法。这为安全、大容量连接提供了专门的功能。

### 高效的可扩展性

集中器擅长快速生成多个 VPN 通道。这样就能满足众多远程员工的连接需求，而不会出现与单个 VPN 客户端设置相关的延迟。

### 访问管理

通过 VPN 集中器，管理员可以实施细粒度的访问控制。这样，他们就可以根据定义的角色或属性，限制用户访问网络的敏感区域。

## VPN 集中器的缺点

### 初始投资高

VPN 集中器的前期费用可能很高。费用通常与部署所要求的企业级硬件和软件有关。

### 带宽限制

VPN 集中器的带宽容量有限。当众多远程工作人员同时连接时，可用带宽可能不足，从而导致潜在的服务质量下降。

### 管理的复杂性

VPN 集中器的配置需要技术熟练的人员。它要求网络工程师确保与现有系统顺利整合，并遵守安全协议。

### 性能天花板

集中器有最高性能限制。如果要提高性能，就必须增加硬件，从而增加投资。

### 可扩展性问题

使用硬件 VPN 集中器大规模扩展服务具有挑战性。扩建往往要求增加浓缩器，从而增加了成本和复杂性。

### 单点故障

如果 VPN 集中器出现故障，所有连接的网络通信都会受到影响，这对于拥有大量远程工作人员的大型组织来说，影响尤为严重。

## VPN 集中器加密协议类型

![VPN 集中器协议：PPTP/MPPE、L2TP/IPsec、IPsec、SSL/TLS](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/cyberpedia/vpn-concentrator-protocol-types.png "VPN 集中器协议：PPTP/MPPE、L2TP/IPsec、IPsec、SSL/TLS")

### PPTP/MPPE

![PPTP 描述的是客户端通过网络接入服务器和互联网连接到 PPTP 服务器，采用 PPP 和 TCP/IP 连接。](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/cyberpedia/pptp.png "PPTP 描述的是客户端通过网络接入服务器和互联网连接到 PPTP 服务器，采用 PPP 和 TCP/IP 连接。")

[*点对点隧道协议*](https://www.paloaltonetworks.cn/cyberpedia/what-is-pptp?ts=markdown) 与微软点对点加密相结合，是 VPN 的常用加密协议。它利用 MPPE 对数据进行加密，因为 PPTP 并不独立提供加密功能。

### L2TP/IPsec

![L2TP 显示远程用户调制解调器通过 PPP 连接 NAS/LAC，然后通过 L2TP 通过互联网连接到 LNS。](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/cyberpedia/l2tp.png "L2TP 显示远程用户调制解调器通过 PPP 连接 NAS/LAC，然后通过 L2TP 通过互联网连接到 LNS。")

[*第 2 层隧道协议*](https://www.paloaltonetworks.cn/cyberpedia/what-is-l2tp?ts=markdown) over IPsec 经常用于远程访问 VPN，尤其是传统系统。使用 L2TP 时，IPsec 负责加密服务。

### IPsec

![通过互联网以 IPsec 隧道连接的两台路由器演示的 IPsec 协议，每台路由器都连接有计算机。](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/cyberpedia/ipsec.png "通过互联网以 IPsec 隧道连接的两台路由器演示的 IPsec 协议，每台路由器都连接有计算机。")

[*互联网协议安全*](https://www.paloaltonetworks.cn/cyberpedia/what-is-ipsec?ts=markdown) 是一套强大的协议。它提供高级加密和验证功能。IPsec 有两种运行模式，每种模式都有不同的安全功能。

### SSL/TLS

安全套接字层（SSL）及其后继者传输层安全（TLS）是可以确保 VPN 连接安全的加密协议。它们有助于基于浏览器的安全远程访问，使 VPN 集中器无需专用 VPN 软件即可支持各种客户端系统。

## VPN 集中器与 VPN 路由器

VPN 集中器专为要求广泛远程访问功能的企业设计。它可以同时处理大量 VPN 连接，为大量远程员工提供强大的安全性和无缝连接。其先进功能专为维护复杂和大规模网络基础设施的性能和安全而量身定制。

相比之下，VPN 路由器面向较小的网络，适用于加密单一地点内设备的数据流量。虽然它提供了基本的安全级别，但其功能并不适合拥有大量远程工作人员或多站点网络的大型企业对可扩展性和性能的要求。

## VPN 集中器与站点到站点 VPN

VPN 非常适合员工分散、要求安全远程访问网络的组织。VPN 集中器善于管理流量，并确保用户在移动用户和笔记本电脑等各种设备上的安全连接，无论用户身在何处。  
![站点到站点 VPN 通过互联网将一个总办事处与三个分支办事处安全地连接起来。](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/cyberpedia/site-to-site-vpn-updated.png "站点到站点 VPN 通过互联网将一个总办事处与三个分支办事处安全地连接起来。")

相比之下 [*站点到站点 VPN*](https://www.paloaltonetworks.cn/cyberpedia/what-is-a-site-to-site-vpn?ts=markdown) 是一种配置，它创建了一个连接不同地点整个网络的虚拟桥接器，使它们成为一个单一的网络。这对于拥有多个分支机构的企业尤其有用，因为这些分支机构需要紧密合作，共享资源，就像位于同一个本地网络内一样。站点到站点 VPN 主要关注的不是单个用户的连接，而是跨不同办公室的网络资源链接。

## VPN 集中器与 IPsec 加密

VPN 集中器通常在企业环境中用于创建和管理大量 VPN 通道。VPN 集中器负责确保连接的稳定和安全、管理加密和维护数据传输的完整性。

另一方面，IPsec 加密是一套协议，通过对通信会话中的每个 IP 数据包进行验证和加密，确保互联网协议（IP）通信的安全。它通常用于建立 VPN 隧道，为数据提供高度安全保障。虽然 VPN 集中器可能采用 IPsec 作为创建安全隧道的方法之一，但 IPsec 本身关注的是通过网络发送的数据包的实际加密和安全。

## VPN 集中器与 VPN 客户端

VPN 集中器提供集中式 VPN 解决方案，可同时为多个用户（通常跨越不同的地理位置）处理安全协议、加密和流量路由。集中器可确保大量设备的安全加密连接，为组织集中管理 VPN。

相比之下，VPN 客户端是允许个人设备与 VPN 服务器建立安全连接的软件。需要从不同地点安全访问企业网络的远程工作人员或个人都可以使用它。VPN 集中器满足集体网络安全需求，而 VPN 客户端则满足单个用户或设备的安全连接要求。

## VPN 集中器常见问题

### VPN 和 VPN 集中器有什么区别？

VPN 为个人提供安全的远程访问。VPN 集中器可管理和维护多个企业用户的安全连接，为大规模部署提供可扩展性和集中控制。

### VPN 集中器如何工作？

VPN 集中器汇聚来自单一网络设备的众多 VPN 连接。它通过加密和管理进出企业网络的流量，为企业用户提供安全的数据通道。这确保了网络的稳健安全和高效性能。

### 我需要 VPN 集中器吗？

拥有多个 VPN 连接的企业可受益于 VPN 集中器。VPN 集中器集中并简化了安全网络管理，优化了带宽，并增强了远程和站点到站点通信的安全协议。

### VPN 集中器在网络中的位置？

VPN 集中器通常放置在网络边缘、防火墙后面、路由器之前，用于安全管理远程用户和站点到站点连接的 VPN 流量。

### VPN 集中器有什么好处？

VPN 集中器为企业提供了处理大量 VPN 连接的能力。它为远程用户、移动用户、分支机构和业务合作伙伴提供安全的加密连接，确保高流量网络的高效管理和稳健安全。
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