{"id":190,"date":"2026-06-07T13:26:41","date_gmt":"2026-06-07T13:26:41","guid":{"rendered":"https:\/\/cahyono.web.id\/2026\/06\/07\/sase-tunnels-legacy-vpn-zero-trust-and-secure-access\/"},"modified":"2026-06-07T13:26:41","modified_gmt":"2026-06-07T13:26:41","slug":"sase-tunnels-legacy-vpn-zero-trust-and-secure-access","status":"publish","type":"post","link":"https:\/\/segoromulyo.com\/?p=190","title":{"rendered":"SASE Tunnels: Legacy VPN, Zero Trust and Secure Access"},"content":{"rendered":"<section>\n<h2>Overview<\/h2>\n<p><strong>SASE tunnels vs legacy VPN<\/strong> represent a fundamental shift in secure connectivity. <strong>As a result<\/strong>, organizations are moving from outdated VPN models to cloud-native SASE frameworks that integrate networking and security. <strong>Therefore<\/strong>, this article explores how SASE tunnels redefine secure access for modern enterprises.<\/p>\n<h2>The Growth from Legacy VPNs to Cloud-Native SASE Tunnels<\/h2>\n<p>Legacy VPNs were built for centralized data centers, forcing traffic backhauling that created latency and bottlenecks. <strong>In contrast<\/strong>, <strong>SASE tunnels<\/strong> shift connections to distributed cloud-based Points of Presence (PoPs). <strong>Consequently<\/strong>, security functions like firewalls, secure web gateways, and DLP operate closer to the user, reducing latency and improving scalability.<\/p>\n<ul>\n<li><strong>Reduced latency:<\/strong> Shorter paths to cloud resources improve user experience.<\/li>\n<li><strong>Scalability:<\/strong> Cloud-native tunnels expand easily to thousands of users.<\/li>\n<li><strong>Unified policy enforcement:<\/strong> Security rules apply consistently across all users.<\/li>\n<\/ul>\n<h2>Integrating Zero Trust with SASE<\/h2>\n<p>The true power of <strong>SASE tunnels<\/strong> lies in integration with Zero Trust Network Access (ZTNA). <strong>Unlike VPNs<\/strong> that grant broad access, SASE enforces least privilege. <strong>Therefore<\/strong>, every request is verified by identity, device health, and context. <strong>In addition<\/strong>, SASE tunnels optimize traffic flow with deep packet inspection and real-time filtering, ensuring high performance while maintaining security.<\/p>\n<h2>What Is SASE and Why It Matters<\/h2>\n<p><strong>SASE (Secure Access Service Edge)<\/strong> converges SD-WAN and security services into a unified cloud-native platform. <strong>According to <a href=\"https:\/\/www.gartner.com\/en\/network\/tools\/sase-and-sse\" target=\"_blank\" rel=\"noopener\">Gartner<\/a><\/strong>, by 2025, 80% of new SD-WAN deployments will be part of SASE, and 30% of remote access purchases will replace VPN-only solutions. <strong>Consequently<\/strong>, the shift reflects the rise of cloud-native apps, distributed workforces, and expanding attack surfaces.<\/p>\n<h2>Real-World SASE Migration Lessons<\/h2>\n<p>Organizations migrating from VPN to SASE report reduced latency, lower costs, and improved security:<\/p>\n<ul>\n<li><strong>Financial services firm:<\/strong> Migrated 45,000 employees to Zscaler ZIA, reducing help desk tickets by 60% and latency by 40%.<\/li>\n<li><strong>Manufacturing company:<\/strong> Consolidated 120 VPN tunnels with Cato Networks SASE, cutting networking costs by 35% and enforcing uniform policies.<\/li>\n<\/ul>\n<h2>SASE Vendor Landscape<\/h2>\n<ul>\n<li><strong>Integrated tools:<\/strong> Palo Alto Prisma Access, Cato Networks, Fortinet FortiSASE simplify management but lock into one vendor.<\/li>\n<li><strong>Best-of-breed:<\/strong> Cisco Viptela or VMware VeloCloud paired with Zscaler or Netskope offer flexibility but add complexity.<\/li>\n<li><strong>Native cloud SASE:<\/strong> Cloudflare One and AWS Cloud WAN integrate directly into cloud ecosystems.<\/li>\n<\/ul>\n<h2>Migration Strategy: From VPN to SASE in 5 Phases<\/h2>\n<ul>\n<li><strong>Phase 1 \u2014 Discovery:<\/strong> Inventory VPN use cases and critical applications.<\/li>\n<li><strong>Phase 2 \u2014 Pilot:<\/strong> Roll out SASE to a small group while keeping VPN fallback.<\/li>\n<li><strong>Phase 3 \u2014 Progressive migration:<\/strong> Move user groups gradually based on risk.<\/li>\n<li><strong>Phase 4 \u2014 VPN decommission:<\/strong> Retire legacy systems once majority adoption is achieved.<\/li>\n<li><strong>Phase 5 \u2014 Continuous optimization:<\/strong> Tune policies quarterly as threats evolve.<\/li>\n<\/ul>\n<h2>Related Reading<\/h2>\n<p>For deeper context on <strong>SASE tunnels vs legacy VPN<\/strong>, see also:<br \/>\n<a href=\"\/implementing-zero-trust-network-access-systems\/\" title=\"ZTNA\">ZTNA small segments<\/a>,<br \/>\n<a href=\"\/sase-tunnels-legacy-vpn-zero-trust-and-secure-access\/\" title=\"VPN migration\">Legacy VPN migration<\/a>, and<br \/>\n<a href=\"\/optimizing-firewall-configurations-for-enhanced-security\/\" title=\"Firewall optimization\">Firewall optimization<\/a>.<\/p>\n<h2>Conclusion<\/h2>\n<p><strong>SASE tunnels vs legacy VPN<\/strong> is not just a technology refresh \u2014 it is a business resilience decision. <strong>In summary<\/strong>, VPNs create technical debt and bottlenecks, while SASE delivers cloud-native security and performance. <strong>Finally<\/strong>, organizations that migrate proactively gain agility, lower costs, and stronger defenses, while those that delay risk falling behind in both security and efficiency.<\/p>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Overview SASE tunnels vs legacy VPN represent a fundamental shift in secure connectivity. As a result, organizations are moving from outdated VPN models to cloud-native SASE frameworks that integrate networking and security. Therefore, this article explores how SASE tunnels redefine secure access for modern enterprises. The Growth from Legacy VPNs to Cloud-Native SASE Tunnels Legacy [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":533,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,24],"tags":[120,136,137,182],"class_list":["post-190","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cybersecurity","category-devsecops","tag-network-security","tag-sase","tag-secure-access","tag-zero-trust-network"],"_links":{"self":[{"href":"https:\/\/segoromulyo.com\/index.php?rest_route=\/wp\/v2\/posts\/190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/segoromulyo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/segoromulyo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/segoromulyo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/segoromulyo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=190"}],"version-history":[{"count":0,"href":"https:\/\/segoromulyo.com\/index.php?rest_route=\/wp\/v2\/posts\/190\/revisions"}],"wp:attachment":[{"href":"https:\/\/segoromulyo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/segoromulyo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/segoromulyo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}