Network Controls

HITRUST CSF v11 09.m requires you to actively manage and control your networks so systems, applications, and data-in-transit stay protected from threats and unauthorized access. Operationally, you must define network ownership, enforce secure configurations and segmentation, protect traffic in transit, and continuously monitor and control connections to internal and connected services. (HITRUST CSF v11 Control Reference)

Key takeaways:

• Assign accountable network management and document how network security is governed end-to-end. (HITRUST CSF v11 Control Reference)
• Control the paths: segment, restrict, and monitor network connectivity to prevent unauthorized access to connected services. (HITRUST CSF v11 Control Reference)
• Protect information in transit with approved encryption and strong access controls at network boundaries. (HITRUST CSF v11 Control Reference)

“Network controls” in HITRUST is not a single device or a firewall rule. It’s a requirement that your organization can prove it manages the network as a controlled environment: you know what’s connected, who can access it, what traffic is allowed, and how you detect and respond to suspicious activity. The control explicitly calls out two outcomes: protecting systems and applications that rely on the network, and protecting information in transit and connected services from unauthorized access. (HITRUST CSF v11 Control Reference)

For a Compliance Officer, CCO, or GRC lead, the fastest way to operationalize this requirement is to translate it into: (1) clear accountability for network security decisions, (2) enforced technical controls at boundaries and between trust zones, (3) secure network service configurations, and (4) ongoing monitoring with evidence you can hand to an assessor. This page gives you requirement-level steps, the minimum artifacts to retain, and the audit questions that usually cause delays.

Regulatory text

HITRUST CSF v11 09.m: “Networks shall be adequately managed and controlled to protect from threats and to maintain security for the systems and applications using the network, including information in transit. Network managers shall implement controls to ensure the security of information in networks and protect connected services from unauthorized access.” (HITRUST CSF v11 Control Reference)

What the operator must do: demonstrate that network security is intentionally designed, consistently enforced, and continuously monitored, with specific attention to (a) protection of data as it moves across networks and (b) preventing unauthorized access through network connectivity (including to “connected services”). (HITRUST CSF v11 Control Reference)

Plain-English interpretation (what this requirement really means)

You must treat your network as a governed control plane, not an ad hoc collection of routes, VPNs, Wi‑Fi, and cloud security groups. “Adequately managed and controlled” means you can show:

• Ownership and oversight: named roles who approve network design, changes, and exceptions.
• Preventive controls: segmentation, boundary protections, secure configuration, and restricted administrative access.
• Protection in transit: approved encryption and key/cert management where applicable.
• Detective controls: monitoring of network activity and alerts tied to response actions.
• Connected services are protected: third-party and internal service connectivity is authenticated, authorized, and restricted to least privilege.

Who it applies to (entity and operational context)

Entity scope: All organizations that align to HITRUST CSF v11 and operate systems, applications, or services that depend on networks for connectivity. (HITRUST CSF v11 Control Reference)

Operational scope (include these environments):

• Corporate networks (LAN/WAN), data center networks, and remote access paths
• Cloud networks (VPC/VNet, subnets, route tables, security groups/NSGs, peering, private endpoints)
• Wireless networks used for business operations
• Connectivity to third parties (SaaS administration, managed service provider access, VPN/B2B connections, EDI links)
• Any network path carrying sensitive data “in transit,” including between application tiers and to connected services (HITRUST CSF v11 Control Reference)

Common scoping pitfall: limiting scope to “the firewall” while ignoring cloud security groups, Kubernetes network policies, or third-party admin paths. Auditors will treat those as part of “the network” because they control connectivity and information in transit.

What you actually need to do (step-by-step)

Use this as an execution checklist. Keep each step tied to evidence.

1) Assign network control ownership and decision rights

• Name a network control owner (often Head of Network Engineering or Security Engineering) and a GRC control owner (for evidence coordination).
• Define who can approve: new network segments, internet exposure, inbound rules, third-party connections, and exceptions.
• Document a simple RACI covering build/change/approve/monitor.

Deliverable: Network Controls Standard (or section within your security standards) that states required boundary controls, segmentation principles, encryption-in-transit requirements, and monitoring expectations. (HITRUST CSF v11 Control Reference)

2) Build and maintain a network inventory that maps “connected services”

• Maintain a current inventory of:
  • Network zones/segments (prod, dev, corporate, vendor/partner, DMZ)
  • Boundary devices and logical controls (firewalls, WAF, gateways, VPN concentrators, cloud security controls)
  • “Connected services” and connections (SaaS admin access, third-party tunnels, API gateways, private links)
• Map each connection to: business owner, data types, authentication method, allowed source/destination, and monitoring/log source.

Practical tip: If you can’t produce a connection list quickly, start from firewall/VPN configs and cloud flow logs, then reconcile with application owners.

3) Enforce network segmentation and least-privilege connectivity

• Define network zones by trust level and function (user, server, management, third-party, internet-facing).
• Default-deny between zones; explicitly allow only required ports/protocols.
• Require documented justification and approval for:
  • Any inbound internet exposure
  • Any east-west access between application tiers that isn’t required
  • Any third-party direct connectivity into internal networks

Evidence focus: auditors look for “rules with a reason.” A rulebase without tickets, owners, and reviews reads as unmanaged.

4) Secure network services and management planes

• Harden and restrict administrative interfaces for network devices and cloud network controls:
  • Admin access only from approved management networks
  • Strong authentication for administrators
  • Disable insecure management protocols where feasible
• Standardize secure configuration baselines for:
  • Firewalls, VPN, proxies, routers/switches (as applicable)
  • Cloud networking constructs (security groups/NSGs, route tables, peering rules)

Control intent alignment: this is how you show “adequately managed and controlled” beyond a diagram. (HITRUST CSF v11 Control Reference)

5) Protect information in transit

• Define where encryption is required (examples: user-to-app, app-to-app, admin-to-console, third-party-to-service).
• Standardize approved protocols (for example, TLS for web traffic) and a process for certificate lifecycle management.
• Validate encryption is actually in place:
  • Configuration reviews for gateways/load balancers
  • App configuration attestations for internal service-to-service encryption where relevant

Artifact strategy: combine a written standard (“we require encryption in transit”) with at least one technical validation method per environment.

6) Monitor, alert, and respond on network security signals

• Centralize security-relevant network logs (where available):
  • Firewall allow/deny events
  • VPN authentication and session logs
  • Cloud network flow logs and security group changes
• Define alerting for high-risk events:
  • New inbound exposures
  • Changes to critical allow rules
  • Unusual outbound connections from sensitive segments
• Tie alerts to incident response workflows (ticketing, triage, escalation).

Exam reality: “We log it” is not enough. You need to show someone reviews, alerts fire, and actions are tracked.

7) Put change control and periodic review around network access paths

• Require change tickets for firewall rules, cloud security group changes, routing/peering, VPN settings, and third-party connections.
• Perform periodic reviews of:
  • Internet-facing services and open inbound ports
  • Rule recertification (remove stale rules)
  • Third-party connectivity and admin access paths

Keep it workable: start with your highest-risk segments (production, sensitive data zones, identity systems) before expanding.

Required evidence and artifacts to retain (auditor-ready)

Maintain a single “Network Controls” evidence folder with:

• Network Controls Policy/Standard and defined roles/responsibilities (HITRUST CSF v11 Control Reference)
• Network segmentation diagram(s) plus zone definitions and trust boundaries
• Inventory of network assets and “connected services” with owners and purpose
• Firewall/security group baseline configurations (or hardened templates) and screenshots/exports
• Rule change tickets (samples), including approvals and risk acceptance for exceptions
• Proof of encryption in transit requirements and implementation evidence (configs, screenshots, test outputs)
• Monitoring evidence: log source list, SIEM ingestion proof, alert rules, and incident tickets from network alerts
• Periodic access/rule review records and remediation actions

Common exam/audit questions and hangups

• “Show me how you prevent unauthorized access to connected services.” Expect to show third-party connectivity controls, API gateway restrictions, VPN access policies, and segmentation. (HITRUST CSF v11 Control Reference)
• “How do you know what is exposed to the internet?” If you can’t produce an authoritative list and a review workflow, you will lose time.
• “Prove encryption for data in transit.” Auditors typically want both policy and technical validation. (HITRUST CSF v11 Control Reference)
• “Who approves firewall rule changes?” Lack of clear decision rights reads as unmanaged networks.
• “How do you detect and respond to anomalous network activity?” Provide alerts plus tickets showing response actions.

Frequent implementation mistakes (and how to avoid them)

1. Mistake: diagrams without enforcement.
   Fix: pair diagrams with default-deny rules, change control, and rule reviews.

2. Mistake: cloud networking left out of ‘network controls’.
   Fix: treat security groups/NSGs, routing, and peering as first-class network controls with baselines and reviews.

3. Mistake: third-party connections aren’t governed.
   Fix: inventory every third-party connection, set explicit allowed paths, require MFA/strong auth, and review access periodically.

4. Mistake: logging exists but isn’t actionable.
   Fix: define a small set of high-signal alerts, route to incident management, and keep closure evidence.

5. Mistake: “encryption in transit” is asserted, not validated.
   Fix: add a repeatable verification method (config review checklist, approved templates, or automated checks).

Enforcement context and risk implications

No public enforcement sources were provided for this requirement in the supplied source catalog, so this page avoids attributing specific cases. Practically, weak network controls increase the likelihood and impact of unauthorized access via exposed services, overly permissive internal connectivity, and unmonitored third-party pathways. HITRUST assessors will focus on whether your network is demonstrably controlled and whether protections cover data in transit and connected services. (HITRUST CSF v11 Control Reference)

Practical 30/60/90-day execution plan (operator-focused)

First 30 days (stabilize and scope)

• Assign control ownership, define approval paths, and publish a Network Controls Standard. (HITRUST CSF v11 Control Reference)
• Produce a “connected services” list from firewalls/VPN/cloud configs and validate with app owners.
• Identify highest-risk segments and all internet-exposed entry points.
• Confirm logging sources exist for boundary controls and remote access.

By 60 days (enforce and evidence)

• Implement or tighten segmentation for highest-risk zones with default-deny and documented allowlists.
• Put change control around firewall rules, security groups, routing/peering, and third-party connections.
• Document encryption-in-transit requirements and validate on critical paths (external user traffic and sensitive internal paths). (HITRUST CSF v11 Control Reference)
• Create initial audit-ready evidence pack (diagrams, inventories, tickets, sample configs).

By 90 days (monitor and make it sustainable)

• Turn on key alerts for new exposures, high-risk rule changes, and suspicious outbound traffic; route to incident response tickets.
• Start periodic rule and third-party connection reviews; track removals and exceptions.
• Run an internal mini-audit: pick a sample of network changes and prove approvals, testing, and monitoring outcomes end-to-end.
• If your evidence collection is scattered, consider using Daydream to centralize control narratives, map evidence to HITRUST requirements, and keep assessor-ready artifacts current without rebuilding the binder each cycle.

Frequently Asked Questions

Does “network controls” only mean firewalls and routers?

No. It covers how networks are managed and controlled across on-prem and cloud, including logical controls like security groups, routing/peering, VPN, and network paths to connected services. (HITRUST CSF v11 Control Reference)

What counts as “connected services” for HITRUST purposes?

Treat any service reachable through your network as a connected service: third-party tunnels, SaaS admin consoles, partner links, internal service endpoints, and cloud private connections. You should be able to list them, restrict access, and monitor connectivity. (HITRUST CSF v11 Control Reference)

How do I prove “information in transit” is protected without doing deep packet inspection?

Keep a written encryption-in-transit standard and show configuration evidence on the traffic termination points you control (load balancers, gateways, VPN settings) plus application attestations where the app owns encryption. (HITRUST CSF v11 Control Reference)

We’re mostly SaaS. What network controls do we still need?

You still need controls over corporate network access, admin access paths to SaaS, identity-integrated remote access, and monitoring of network-connected services (for example, VPN, proxies, SSO paths). Document how those paths are restricted and reviewed. (HITRUST CSF v11 Control Reference)

Can we meet the requirement if we outsource networking to a managed service provider?

Yes, if you retain governance: defined requirements, approval and change control, monitoring expectations, and evidence from the third party that controls are implemented. Your assessors will still expect you to demonstrate oversight and access restrictions. (HITRUST CSF v11 Control Reference)

What’s the fastest evidence to collect for an assessment?

Start with a current network segmentation diagram, an inventory of connected services, samples of approved network changes, and proof of logging/alerting from boundary and remote access controls. These artifacts typically anchor most assessor testing. (HITRUST CSF v11 Control Reference)