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[Cyberpedia](https://www.paloaltonetworks.com/cyberpedia?ts=markdown) 2. [Cloud Security](https://www.paloaltonetworks.com/cyberpedia/cloud-security?ts=markdown) 3. [What Is a Cloud Secure Web Gateway?](https://www.paloaltonetworks.com/cyberpedia/what-is-a-cloud-swg?ts=markdown) Table of Contents * [Limitations of Legacy On-Premises Web Proxy Appliances](#limitations) * [Cloud SWG Benefits](#benefits) * [How Cloud SWG and SASE Work Together](#how) * [Cloud SWG FAQs](#faq) # What Is a Cloud Secure Web Gateway? 3 min. read Table of Contents * [Limitations of Legacy On-Premises Web Proxy Appliances](#limitations) * [Cloud SWG Benefits](#benefits) * [How Cloud SWG and SASE Work Together](#how) * [Cloud SWG FAQs](#faq) 1. Limitations of Legacy On-Premises Web Proxy Appliances * [1. Limitations of Legacy On-Premises Web Proxy Appliances](#limitations) * [2. Cloud SWG Benefits](#benefits) * [3. How Cloud SWG and SASE Work Together](#how) * [4. Cloud SWG FAQs](#faq) A cloud secure web gateway (SWG) is a cloud-delivered network security technology that filters internet traffic and enforces corporate and regulatory policy compliance. A cloud SWG secures internet access for diverse environments, from remote users to IoT devices, by offloading traffic from on premises to the cloud. It enhances visibility and control over web traffic and threats, applying robust controls and data protection while facilitating direct-to-cloud connections to improve network performance. ## Limitations of Legacy On-Premises Web Proxy Appliances !\[Limitations of legacy on-premises web proxy appliances: poor security, poor UX, ltd. visibility, appliance issues\](https://www.paloaltonetworks.com/content/dam/pan/en\_US/images/cyberpedia/limitations-of-legacy-on premises-wpa.png " Limitations of legacy on-premises web proxy appliances: poor security, poor UX, ltd. visibility, appliance issues") When security vendors first introduced SWGs into the marketplace, they primarily consisted of proxy vendor solutions. However, proxies and SWGs serve different purposes: a proxy primarily provides a networking role, while an SWG offers a comprehensive security solution. A proxy, acting as an intermediary device or program, facilitates a user's request to access a destination like a website or cloud application. The proxy conceals the user's IP address, which adds a level of privacy. Proxies function by accepting a client's web request, disconnecting the initial connection, connecting anew to the requested destination, and relaying the client's data. Traditional on premises web proxy appliances come with limitations, including: ### Inadequate Security Proxy vendors didn't originally design these appliances, along with other legacy multivendor solutions, with the cloud in mind. They don't provide consistent security for all users and devices, which can leave gaps in an organization's defenses. ### Restricted Visibility Traditional proxies cannot detect over half the threats remote workers face from non-web applications, making it impossible to secure against unseen risks. ### Degraded User Experience Routing internet traffic through centralized data center proxies causes performance issues. Remote workers might use VPNs instead of SWGs to access private apps, leading to potential confusion and increased support demands. ### Vendor Appliance Issues Employing multiple vendors for security appliances can lead to disjointed management, uneven security policies, and reduced network threat visibility. This often results in higher maintenance costs and hampers teamwork between networking and security teams. [*What Is a Secure Web Gateway (SWG)*](https://www.paloaltonetworks.com/cyberpedia/what-is-secure-web-gateway?ts=markdown)? ## Cloud SWG Benefits Cloud-based secure web gateways are pivotal for organizations seeking robust internet security across various locations, including remote offices, branches, and even large headquarters. By transitioning from on-premises systems to cloud-based solutions, organizations can effectively meet high bandwidth demands. Cloud web security gateways also provide real-time comprehensive visibility into user activities and internet threats, along with robust controls for access, functions, SaaS, and sensitive data protection. Cloud-based web security gateways can substantially enhance end-user experiences. By circumventing the need to route all traffic through a corporate data center---a process that often results in latency---direct cloud connections can significantly boost network performance. This approach streamlines access and security procedures and aligns with modern, decentralized work environments. Cloud SWGs that support proxy architectures offer a forward-leaning posture in network security that complements, rather than replaces, the foundational security provided by firewalls. ## How Cloud SWG and SASE Work Together ![Network model connecting, cloud services, and user experience to various locations.](https://www.paloaltonetworks.com/content/dam/pan/en_US/images/cyberpedia/sase-cswg.png "Network model connecting, cloud services, and user experience to various locations.") Deploying SWGs as standalone systems can create challenges, including disjointed workflows and a lack of integration with other security services within an organization. Fragmentation can lead to increased complexity and inefficiency in security operations, particularly as organizations grow and security needs become more complex. The secure access service edge (SASE) model presents a solution by merging networking and security into a singular cloud-based service. This integrated approach simplifies the delivery of comprehensive network and security functions, encompassing SD-WAN, VPNs, cloud SWG, CASB, FWaaS, DLP, and threat prevention. In a SASE framework, the cloud SWG component plays a crucial role. It extends web access control and applies security policies to protect against a variety of threats, including malware and phishing attacks. The cloud-native nature of SASE enables it to secure a geographically dispersed workforce and the use of SaaS applications efficiently. A SASE solution centralizes the deployment of SWG in the cloud, offering organizations visibility and control over their entire network. This unified platform is particularly beneficial for managing the security of remote users and disparate enterprise applications. It ensures consistent security enforcement, regardless of user location or device, streamlining the security experience and bolstering an organization's defense posture. ## Cloud SWG FAQs ### What is a cloud secure web gateway? A cloud SWG is a cloud-based network security solution that filters web traffic and enforces corporate and regulatory policy compliance. ### What is the difference between CASB and SWG? Cloud access security broker (CASB) focuses on securing cloud applications and services, while SWG primarily protects against threats in web traffic. ### What is the difference between SWG and WAF? SWG filters web traffic to prevent threats and enforce policies, whereas WAF protects web applications by filtering and monitoring HTTP traffic between a web application and the internet. ### How does SWG work? SWG works by inspecting web traffic, blocking malicious web content, enforcing policies, and applying data loss prevention (DLP). ### What is the difference between VPN and SWG? VPN provides secure remote access to a network, while SWG monitors and secures web traffic for policy compliance and threat prevention. Related Content \[What Is SASE? SASE unifies SD-WAN with security functions like SWG, CASB, FWaaS, and ZTNA into one service.\](https://www.paloaltonetworks.com/cyberpedia/what-is-sase ?ts=markdown) [Cloud Secure Web Gateway Cloud Secure Web Gateway safely enables applications, users, content, and devices by eliminating all known and unknown threats.](https://www.paloaltonetworks.com/resources/datasheets/cloud-secure-web-gateway?ts=markdown) [Cloud Secure Web Gateway For Complete Security Learn how Cloud Secure Web Gateway (SWG) delivers complete, industry-leading security through Prisma Access.](https://www.paloaltonetworks.com/resources/videos/cloud-secure-web-gateway-for-complete-industry-leading-security?ts=markdown) \[Cloud Secure Web Gateway For Dummies® Discover how a cloud secure web gateway (SWG) delivers complete security.\](https://www.paloaltonetworks.com/resources/techbriefs/cloud-secure-web-gateway-for-dummies ?ts=markdown) ![Share page on facebook](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/resources/facebook-circular-icon.svg) ![Share page on linkedin](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/resources/linkedin-circular-icon.svg) [![Share page by an email](https://www.paloaltonetworks.com/etc/clientlibs/clean/imgs/resources/email-circular-icon.svg)](mailto:?subject=What%20Is%20a%20Cloud%20Secure%20Web%20Gateway%3F&body=A%20cloud%20SWG%20is%20a%20cloud-delivered%20network%20security%20technology%20that%20filters%20internet%20traffic%20and%20enforces%20corporate%20and%20regulatory%20policy%20compliance.%20at%20https%3A//www.paloaltonetworks.com/cyberpedia/what-is-a-cloud-swg) Back to Top {#footer} ## 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