SASE and traditional network security: is your perimeter obsolete?

TL;DR: SASE replaces fixed perimeter controls with cloud-delivered policy built around identity, reducing blast radius for remote access and cloud traffic while legacy network security still suits some on-site environments, according to CyberFOX. The governance question is not whether zero trust is fashionable, but whether trust can still be anchored to a place the workforce no longer occupies.

Editorial analysis by NHI Mgmt Group, based on content published by CyberFOX: “SASE Cloud Security vs Traditional Network Security”.

Key questions

Q: How should teams decide whether to keep VPNs or move to SASE?

A: Choose based on how much your environment still depends on location-based trust.

Q: Why do traditional remote access methods create more risk for privileged users in hybrid environments?

A: Traditional methods create risk because they often grant broad access, depend on exposed network paths, and make it hard to enforce granular control.

Q: What should security teams evaluate before migrating to cloud-delivered network controls?

A: Check application compatibility, logging consistency, policy ownership and change sequencing before cutover.

Practitioner guidance

• Define the access model by application, not network zone Inventory the remote-access paths that still grant broad internal reach, then prioritise the highest-risk apps and admin workflows for per-application policy.
• Align identity controls with remote access design Make sure MFA, device posture and privileged access rules are applied at the same decision point as network access, especially for contractors and admins.
• Test hybrid migration paths before full cutover Validate how legacy applications, branch connectivity and cloud services behave when traffic is inspected closer to the user rather than backhauled to a central site.

Bottom line: SASE shifts trust from a fixed perimeter to identity-driven access control, which makes remote and third-party access easier to govern.

Explore further

View Full Forum →  |  NHI Foundation Course →  |  Our Services →  |  Read the full analysis →