Business VPN & Remote Access: A Practical Security Checklist for Small Teams

Remote access is convenient because it lets employees, vendors, and administrators reach business systems from outside the office.

That same convenience means the access path deserves careful planning.

A VPN can protect traffic between a remote device and a business network, but a VPN by itself does not answer every security question. The business still needs to decide who can connect, from which devices, to which systems, with what level of authentication, and how that access will be monitored and removed when it is no longer needed.

SMART Solutions includes VPN and secure remote access within its Connectivity Solutions and supports broader Cybersecurity Protection and Network & Security Assessments for businesses evaluating users, devices, networks, and access risk.

What a business VPN actually protects

A remote-access VPN creates an encrypted connection between a remote user or device and a network endpoint such as a VPN gateway.

NIST’s Guide to Enterprise Telework, Remote Access, and Bring Your Own Device Security explains that remote-access technologies and the client devices using them should be secured against expected threats. The guide covers remote-access solutions, client-device security, policy, authentication, and other controls that surround the connection itself.

Source: NIST SP 800-46 Rev. 2 — Guide to Enterprise Telework, Remote Access, and BYOD Security

The important point is that an encrypted tunnel protects communications in transit, but it does not automatically make the remote device trustworthy or the internal resource safe.

A compromised laptop with valid VPN access can still create risk.

1. Define who actually needs remote access

Start with people and roles.

Avoid creating remote access for “everyone” simply because the technology makes that easy.

Build a list of users such as:

• Employees who regularly work remotely
• Managers who need access to internal systems while traveling
• IT administrators
• Outside vendors with a documented support need
• Temporary project users
• Service accounts that require a controlled remote path

For each role, document why access is needed and what system the person should reach.

That gives the business a starting point for least-privilege access instead of a single VPN profile that exposes the same network resources to every remote user.

2. Separate authentication from authorization

A user proving who they are is not the same as deciding what they are allowed to access.

A practical remote-access design should answer both questions:

NIST’s Zero Trust Architecture guidance emphasizes that trust should not be granted solely because a user or device is on a particular network. Authentication and authorization should be performed before access to a resource is established.

Source: NIST SP 800-207 — Zero Trust Architecture

A traditional VPN and a zero-trust architecture are not the same thing, but the principle is useful: network location should not be the only reason a user receives broad trust.

3. Require stronger authentication for remote access

Remote access is exposed to the public internet by definition, so authentication deserves more attention than an ordinary internal login.

At minimum, evaluate:

• Multi-factor authentication
• Unique user accounts instead of shared credentials
• Password and account-lockout policy
• Device identity or certificates where appropriate
• Administrative accounts separate from everyday user accounts
• Alerts for repeated or unusual login activity

Do not let a shared “remote” account become the permanent shortcut for employees, vendors, and technicians.

Shared credentials make it harder to know who connected and harder to revoke one person’s access without affecting everyone else.

4. Decide which devices are allowed

A secure VPN cannot compensate for an unmanaged endpoint indefinitely.

Before allowing a device onto the network, consider whether it has:

• A supported operating system
• Current security updates
• Endpoint protection
• Disk encryption where appropriate
• A secure screen lock
• Controlled local administrator privileges
• A process for reporting loss or theft

NIST’s remote-access guidance explicitly includes client-device security because the endpoint is part of the remote-access system.

For businesses using personal devices, the policy questions become even more important: what data can be stored locally, who supports the device, what happens when the employee leaves, and whether company information can be removed without affecting personal data.

5. Limit what remote users can reach

A common mistake is treating successful VPN authentication as permission to access the entire internal network.

Instead, map remote-access roles to the resources they actually need.

Examples:

• Accounting staff may need an accounting application but not camera infrastructure.
• A camera vendor may need a specific management system but not file servers.
• An IT administrator may need broader access, but that account should receive stronger controls and monitoring.
• A remote employee may need a business application without needing direct access to every subnet.

This is where network segmentation and remote-access design work together.

6. Make vendor access temporary and accountable

Third-party access is often necessary.

It should not automatically become permanent.

For vendors and contractors, document:

1. Business owner. Which employee is responsible for approving the access?
2. Purpose. Which system is the vendor supporting?
3. Scope. Which network or application can the vendor reach?
4. Time window. Is access always available or enabled only when needed?
5. Authentication. Does the vendor use a unique identity with MFA?
6. Logging. Can the organization identify when the vendor connected?
7. Offboarding. Who removes access when the contract or project ends?

CISA’s ransomware guidance recommends auditing remote access tools, reviewing their use, and restricting remote administration to authorized solutions and approved access paths.

Source: CISA — #StopRansomware Guide

7. Choose split tunnel or full tunnel intentionally

VPN designs can handle internet-bound traffic differently.

In a full-tunnel design, remote traffic is generally routed through the organization’s VPN path before reaching its destination. In a split-tunnel design, only selected business traffic uses the VPN while other internet traffic leaves directly from the user’s local connection.

Neither choice should be selected by habit.

The decision can affect:

• Security inspection
• Bandwidth use
• User performance
• Cloud application routing
• DNS behavior
• Access to local printers or devices

The right configuration depends on the organization’s applications, network capacity, security controls, and remote-work model.

8. Log connections and review them

A remote-access system should answer basic operational questions:

• Who connected?
• When?
• From what source?
• Was authentication successful or denied?
• Which gateway or profile was used?
• Are there repeated failures?
• Are dormant accounts still active?

Logs are most useful when someone actually reviews them.

Create a recurring process for checking remote-access accounts and removing those that no longer have a business purpose.

9. Build offboarding into the same workflow as onboarding

Remote access is often configured carefully when a new employee starts and forgotten when that person changes roles or leaves.

The offboarding checklist should include:

• Disable the user's remote-access account
• Revoke device certificates or tokens where applicable
• Remove the user from remote-access groups
• Review saved credentials and shared secrets
• Recover company-owned equipment
• Check whether the user had vendor, cloud, or administrative access outside the VPN

Access management is a lifecycle, not a one-time configuration.

10. Test remote access before people depend on it

A VPN that connects successfully from the IT administrator’s laptop is not fully tested.

Test realistic scenarios:

• A normal employee from a home network
• A user with the wrong password
• A user without the required second factor
• A user attempting to reach an unauthorized network
• A lost or revoked device
• A vendor account after its approved window ends
• A primary internet outage if remote access depends on redundant connectivity

Document expected results so testing is repeatable after firewall, identity, ISP, or network changes.

When to request a network and security assessment

Consider a formal review when:

• You do not know which remote-access accounts still exist
• Several vendors have permanent VPN access
• Remote users can reach more systems than they need
• The business uses shared VPN credentials
• VPN access was configured years ago and never reviewed
• You are adding a second office or cloud environment
• You are replacing a firewall or internet provider

SMART Solutions can review the network, devices, users, access points, and connectivity as part of a Network & Security Assessment and recommend practical improvements based on priority, budget, scalability, and reliability.

If your business needs VPN or remote-access planning, contact SMART Solutions to start with the environment you actually have today.

Sources and further reading

• NIST SP 800-46 Rev. 2 — Guide to Enterprise Telework, Remote Access, and BYOD Security
• NIST SP 800-207 — Zero Trust Architecture
• CISA — #StopRansomware Guide