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A virtual private network (VPN) is a marvelous tool for protecting people and their data while browsing the internet, especially when working from unsecured or weakly protected networks like those at public libraries and coffee shops.<\/p>\n
From a business perspective, VPNs keep business data secure when employees work with sensitive material like trade secrets and proprietary information. VPN tunnels are also instrumental, as they provide users with an encrypted connection between their device and the internet.<\/p>\n
However, given the enriched data flow and volumetric information brought on by VPNs, you and\/or your IT team should still monitor them regularly. The technical feedback you can gather by doing so will help you finetune and configure your VPN connections for optimal performance.<\/p>\n
As an alternative to VPNs, SD-WAN (Software-Defined Wide Area Network) offers businesses many more use cases. For instance, organizations that lean heavily on Voice over Internet Protocol (VoIP) phone services can use it to simplify enterprise-scale network management.<\/p>\n
<\/p>\n
I\u2019m assuming most people interested in this post are comfortable with networking basics, like WAN (Wide Area Network) that spans a large geographic area, connecting multiple local networks (LANs) across cities, countries, or even continents. So we\u2019re going to skip the basics. If not, check out this guide on essential networking fundamentals<\/a> before continuing on.<\/p>\n SD-WAN<\/a> represents a logical progression from traditional WAN, providing benefits like dynamic traffic management with centralized control. It allows users to deploy different connection types interchangeably by using software to abstract the network layer.<\/p>\n The fundamental benefit of SD-WAN over traditional WAN is its ability to intelligently route traffic across multiple connection types, optimizing performance, reducing costs, and providing greater flexibility and scalability.<\/p>\n SD-WAN offers businesses improved network performance, cost savings, enhanced security, and greater agility by enabling dynamic, intelligent traffic routing across diverse connection types, making it a more scalable and flexible solution compared to traditional VPNs.<\/p>\n Let\u2019s walk through why<\/p>\n A key advantage of SD-WAN is its ability to avoid vendor lock-in by using a virtualized architecture, allowing businesses to combine various transport services. Unlike traditional network infrastructure, which is often rigid and hardware-dependent, the best SD-WAN vendors<\/a> give organizations the flexibility to optimize bandwidth across multiple connection types, such as broadband, mobile, Wi-Fi, and satellite.<\/p>\n This flexibility enables network administrators to prioritize critical traffic more effectively, reduce reliance on centralized data centers by eliminating backhauling, and create more efficient, direct routing paths to improve overall network performance.<\/p>\n Even though WAN connectivity has been around for a while, one of its peskiest challenges has always been figuring out how to connect widely dispersed data centers in a cost-effective manner. Technologies like MPLS (Multiprotocol Label Switching), for instance, provided a respite \u2014 especially for organizations operating in rugged environments\u2014but MPLS often brings a huge cost disadvantage.<\/p>\n SEE: Discover other reasons to avoid MPLS and better alternatives.\u00a0<\/strong><\/p>\n SD-WAN, however, is more practical (to deploy) and much less expensive than MPLS because it doesn\u2019t require specialized equipment to conduct routing over the internet.<\/p>\n Another cost-effective aspect of using SD-WAN is its ability to aggregate multiple, less expensive internet connections (such as broadband, LTE, and Wi-Fi) to create a more reliable and efficient network. This reduces the need for expensive, dedicated leased lines or private WAN circuits, allowing businesses to use more affordable and flexible transport services while maintaining high performance.<\/p>\n Nothing jams up the efforts of network administrators and cybersecurity professionals more than a lack of control over their organization\u2019s online traffic.<\/p>\n That said, the application-level visibility provided by SD-WAN allows you to control traffic more effectively.<\/p>\n For instance, SD-WAN allows administrators to fine-tune Quality of Service (QoS) by prioritizing VoIP traffic over less critical data, ensuring consistent call quality. With real-time monitoring and dynamic traffic routing, SD-WAN can adjust network paths to avoid congestion, and ensure optimal performance for VoIP applications even during peak usage times.<\/p>\n SD-WAN is the network tool of choice for enterprises with multiple office branches that want to maintain a centralized oversight.<\/p>\n In general, a ton of network administrators face the challenge of having to orchestrate a gauntlet of deployed devices and endpoints, so<\/p>\n SD-WAN is a logical choice because it makes networks more manageable and cost-effective. With centralized management to handle data packets and workflows between branches, network operations are simplified company-wide.<\/p>\n Because of its centralized network management, SD-WAN allows you to deploy uniform security measures including dynamic encryption tunnels, IP security (IPsec), and next-generation firewalls (NGFW)<\/a> to ensure that all traffic is protected. Additionally, SD-WAN offers advanced features like network segmentation, which isolates critical parts of the network to reduce risk, and intrusion protection to detect and block potential threats.<\/p>\n These built-in security features work together to provide end-to-end encryption, making SD-WAN a powerful solution for defending against network security threats<\/a>, especially in environments with remote or distributed teams. By simplifying the process of managing network security, SD-WAN makes it easier for IT teams to protect sensitive data and maintain compliance with industry regulations.<\/p>\n A VPN safeguards online activity by providing a measure of intrusion protection against unauthorized third parties and other rogue actors. They use encrypted data transmission to prevent the intercepting and eavesdropping of connections that can occur via packet sniffing and other snooping tactics.<\/p>\n The best enterprise VPN services achieve this protection through VPN tunneling, which creates an encrypted connection between the user\u2019s device and the endpoint or remote server they are accessing. If you are potentially in the market for SD-WAN, I\u2019d start with the enterprise VPN tools first, though you may be able to get by with the one of the best VPN solutions for small business if only a handful of your employees require the extra protections.<\/p>\n On the private side of things, everyday consumers use VPNs for streaming and non-commercial purposes.<\/p>\n A major role of VPNs is to provide users anonymity by hiding their identity and online activity. To achieve this, a VPN creates a private digital network from a public connection to mask the user\u2019s IP address, making it difficult for anyone to track their internet activity.<\/p>\n A VPN allows users to view content from anywhere in the world. As a result, users can access forbidden websites due to censorship or geo-restrictions. VPNs are legal in the United States, but this is not true in all countries.<\/p>\n Avoiding censorship and surveillance is a common practice for dissenting individuals and journalists residing in authoritarian regimes. It\u2019s also common for people who want to stream shows that are blocked or too expensive where they live.<\/p>\n In addition to hiding your identity anonymously, VPNs also obscure your location by redirecting traffic through encrypted, remote servers. A good VPN ensures the user\u2019s online activity remains invisible to their internet service provider (ISP), but it doesn\u2019t always happen that way with all VPNs.<\/p>\n VPNs encrypt all data that moves through your network, fortifying and boosting an organization\u2019s cybersecurity profile. They also minimize the effectiveness of Man-In-The-Middle (MITM) attacks, especially when employees are working remotely outside of their corporate networks. This safeguards corporate data from falling into the wrong hands if a staff member unknowingly works from a vulnerable or insecure connection.<\/p>\n Lastly, besides ordinary marketplace uses, many (if not all) national militaries deploy some kind of VPN for secure communication as a foundational part of their tactical kit.<\/p>\n Users working off-site can use client-to-site VPNs on their personal devices to access their organization\u2019s resources from a remote server. Naturally, remote access like this typically requires them to provide authentication credentials before they are granted access to company resources.<\/p>\n Setting up a remote access VPN is beneficial because you can utilize it for personal and professional purposes.<\/p>\n SEE: Learn more about the different types of VPNs and when to use them.<\/strong><\/p>\n Large and complex organizations often use site-to-site VPNs to scale their businesses. These VPNs enable them to combine and connect multiple internal networks across different locations within their organizations.<\/p>\n VPNs enhance data security by preventing data interception in transit. This is key for safeguarding intellectual property such as trade secrets, industrial designs, and proprietary information \u2014 especially when companies need to share it with third parties and contractors.<\/p>\n SEE: Discover more ways to protect and secure your data.<\/strong><\/p>\n The biggest concerns with large-scale VPN deployments are performance bottlenecks from too many users, network latency issues<\/a> caused by centralized traffic routing, and managing tunnels, as maintaining thousands of secure connections can overwhelm VPN servers and IT teams.<\/p>\n While VPNs have been a foundational tool for remote access, they face significant limitations as organizations grow. Here are the key challenges of scaling VPNs and why solutions like SD-WAN are becoming more critical for modern networks.<\/p>\n VPNs struggle to handle large numbers of simultaneous connections, resulting in network congestion and degraded performance. Managing thousands of VPN tunnels<\/a> can overwhelm servers and IT teams, creating bottlenecks that slow down critical applications and user access.<\/p>\n VPNs route traffic through centralized servers, which introduces delays, especially when accessing cloud-based apps or services. This extra routing increases latency, reduces productivity, and impacts the performance of real-time applications like VoIP phone systems and video conferencing.<\/p>\n SEE: Learn how to future-proof your VoIP phone system.\u00a0<\/strong><\/p>\nTraffic optimization and improved network efficiency<\/h3>\n
Providing cost-effective solutions<\/h3>\n
Increased control through application-level visibility<\/h3>\n
Centralized management<\/h3>\n
Cybersecurity administration<\/h3>\n
What Problems Does a VPN Solve?<\/h2>\n
Privacy and anonymity<\/h3>\n
Avoiding censorship<\/h3>\n
Providing stringent cybersecurity requirements<\/h3>\n
Remote access connectivity<\/h3>\n
Network linking across multiple sites<\/h3>\n
Intellectual property protection<\/h3>\n
Challenges managing access at scale with VPN vs SD-WAN<\/h2>\n
Scalability bottlenecks and tunnel overload:<\/h3>\n
Performance and application latency:<\/h3>\n
Security gaps in modern environments:<\/h3>\n