Why Remote Workers Need a VPN
When employees work from home or public locations, they connect to company resources over the public internet — a fundamentally insecure environment. A Virtual Private Network (VPN) creates an encrypted tunnel between the user's device and the company network, protecting sensitive data from interception and ensuring that remote access meets corporate security standards.
This guide walks IT administrators and technically capable end-users through the key steps of deploying and connecting to a business VPN.
Understanding VPN Types for Business
Before setting anything up, it's important to choose the right VPN type for your use case:
- Remote Access VPN: Individual users connect to the corporate network from remote locations. Most common for remote work scenarios.
- Site-to-Site VPN: Connects two office networks together over the internet. Used when multiple offices need to share resources as if on the same local network.
- SSL/TLS VPN: Browser-based access requiring no dedicated client software — good for BYOD (bring your own device) environments.
Choosing Your VPN Solution
For businesses, common VPN solutions include:
- OpenVPN: Open-source, highly configurable, free — requires technical setup and self-hosting or a cloud server
- WireGuard: Modern protocol known for speed and simplicity — increasingly supported by routers and commercial solutions
- Cisco AnyConnect / Meraki: Enterprise-grade, managed solution for larger organizations
- Cloudflare Zero Trust (WARP for Teams): Modern ZTNA approach — suitable for cloud-first businesses
Setting Up OpenVPN: A General Overview
On the Server Side (IT Administrator)
- Provision a server: Use a cloud VM (AWS EC2, Azure VM, DigitalOcean Droplet) or an on-premise server with a public IP.
- Install OpenVPN Access Server: Follow the official documentation for your Linux distribution (Ubuntu is most common).
- Configure your network settings: Set the VPN subnet, DNS settings, and which internal resources should be reachable.
- Generate certificates: Use the built-in PKI (Public Key Infrastructure) to generate server and client certificates.
- Configure firewall rules: Open UDP port 1194 (default OpenVPN port) and configure NAT rules for traffic routing.
- Create user accounts: Add user profiles and export client configuration files (.ovpn).
On the Client Side (End User)
- Download the OpenVPN client for your operating system from the official OpenVPN website.
- Import the .ovpn configuration file provided by your IT administrator.
- Enter your credentials when prompted.
- Click Connect — the client will display a green status icon when the tunnel is active.
- Verify your connection by checking your IP address or attempting to access internal company resources.
Security Best Practices
- Enable MFA: Combine certificate-based authentication with a second factor (TOTP app like Google Authenticator).
- Use split tunneling carefully: Only route necessary traffic through the VPN to reduce bandwidth strain, but ensure sensitive traffic is always tunnelled.
- Keep software updated: VPN software vulnerabilities are actively exploited — patch promptly.
- Monitor connection logs: Review VPN logs regularly for unusual access patterns or failed authentication attempts.
- Revoke certificates when staff leave: Immediately invalidate credentials for departing employees.
Troubleshooting Common Issues
| Problem | Likely Cause | Solution |
|---|---|---|
| Cannot connect to VPN | Firewall blocking port 1194 | Check server firewall and ISP restrictions; try TCP 443 as fallback |
| Connected but can't reach internal resources | Routing or DNS misconfiguration | Verify push routes and DNS settings in server config |
| Slow VPN speeds | Server overload or distant server location | Upgrade server resources or use a geographically closer endpoint |
Final Notes
A VPN is a foundational element of remote work security, but it is not a complete security solution on its own. Pair it with endpoint protection, strong password policies, and user security awareness training for a robust remote work security posture.