During a recent audit of servers, a company discovered that a network administrator, who required remote access, had deployed an unauthorized remote access application that communicated over common…

Blocking the application via IPS removes the unauthorized tool but does not provide the network administrator with a legitimate, secure replacement for remote access.

Deploying an unauthorized application to the remaining servers compounds the policy violation and increases attack surface rather than resolving the governance problem.

An SSL VPN with SAML-based federation establishes a formally approved remote access solution that leverages federated identity for strong authentication and single sign-on, replacing the shadow-IT application with one that is centrally controlled and auditable. SAML federation ties remote access to the corporate identity provider, enabling enforcement of MFA and access policies across all servers. This addresses the root cause - lack of an authorized, standardized remote access mechanism - rather than merely blocking the symptom.

Adding ACLs with NAT provides coarse network-level access control but lacks the identity federation, strong authentication, and session encryption that a proper enterprise remote access solution requires.