What Is a Secure Web Gateway (SWG) and How Does It Work?
Author: Gary Hilson,Date published: April 13, 2026,Modern trends such as , the move to a and increased use of for work have all combined to place intense pressure on business networks. At the same time, a rise in cyber attacks and increasingly cheap availability of cyber crime tools, increase the vulnerability of said networks. This is why it is helpful to think of a secure web gateway (SWG) not only as something protecting your organization against malware but also as a critical technology for enabling communications and collaboration. A fully managed, centralized gateway can provide you with secure access to a variety of broadband and wireless access options necessary for your business to operate in a connected world where threat actors are looking to exploit potential attack surfaces. A secure web gateway acts as a checkpoint to stop unauthorized traffic from entering your organization's network. The gateway governs all inline traffic, standing between all incoming and outgoing data. Users can only access approved, secure websites. This helps to prevent viruses, malware, ransomware and other malicious traffic from taking root in your enterprise network to hamper operations, access sensitive data and steal valuable intellectual property. Secure web gateways can be installed either as a software component or as a hardware device on the edge of the network or at user endpoints. Every gateway uses a stored list of known and approved website URL addresses to block malicious sites and filter out any unknown addresses. A secure web gateway doesn't only control what gets in either. All outgoing data is checked to ensure whether and where it's allowed to be distributed. This is especially important given the adoption of software-as-a-service (SaaS) applications commonly used for , as well as through which desktops and files can be shared in real time. An SWG protects each workstation in the organization from web traffic that might attempt to steal or destroy data or hijack devices as a means to get broader access to the enterprise network. A secure web gateway is one of many that are becoming increasingly important as threat actors develop more sophisticated techniques to trick users into sharing personal identification information and business data or inject malicious code to take control of devices and networks and disrupt operations. Enterprise networks with multiple points of entry will need to address these threats. Research highlights the due to the acceleration of organizations migrating to the cloud with the adoption of cloud applications and storage. As more workloads are run from the cloud, there's an increase in threats focused on the web channel and increased reliance on browsers to access applications. This could result in more data leakage, according to the report. A secure web gateway is more than just a security guard deciding who's allowed in and out based on credentials. Optimally, the technology you deploy should offer capabilities beyond basic URL, data and web application control filtering. Features such as encrypted traffic analysis enable a secure web gateway to compare all traffic to available lists and then analyze the nature of the traffic, including SSL-based encrypted traffic, to determine if any content or code could be a threat to the network. A secure web gateway can scan and filter social media for outgoing information, as well as scan outgoing data to determine if it should be uploaded to the cloud outside of your organization's network to prevent data loss. For maximum effectiveness, you may want to make sure a secure web gateway deployment is integrated with other security tools, including your existing monitoring solution so that your IT and security teams are notified immediately of any problems. You may also want to integrate your preferred zero-day anti-malware solution to prevent and remediate threats never seen before. All protocols including HTTP, HTTPS and FTP internet protocols should be supported. Where you deploy your secure web gateway is flexible. It can be placed at endpoints, at the edge or in the cloud. Like many other applications and services, it can be deployed in a cloud-based, SaaS model, which is less expensive and easier to maintain. A cloud-based solution is especially practical for remote locations and workers, although you can combine a SaaS approach with existing hardware solutions, such as appliances. Because today's network architectures are complex—and even more so with the dramatic rise in remote endpoints—it's important to understand the nature of your web traffic, where it needs to go and who needs to use it. Given the many deployment options and the many different locations you may have to support and the nature of your business, consider a . By delivering an SWG through a cloud-based port, your can be extended to remote locations and users, so they can safely and securely connect and collaborate virtually anytime and anywhere. Aside from protecting your organization against threats, your gateway can provide useful insight into network traffic including user behavior on the web, help to govern acceptable and safe use of the web and obtain better visibility and control of data through the use of advanced web analytics. Learn more about how Verizon can help you . Call sales,Chat with us,Have us contact you,Get updates,Already have an account?,* Required,The information provided will be used in accordance with our terms set out in our . Please confirm you have read and understood this Notice,Verizon may wish to contact you in the future concerning its products and/or services. If you would like to receive these communications from Verizon, indicate by selecting from the dropdown menu below. 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