Business VPN (UK, 2025) — Remote Teams, Security & Setup

Updated: 2025-09-16 • ~12–16 min read
Why a business VPN?
- Remote access: employees reach on-prem apps, NAS, RDP, SSH from home or travel.
- Wi-Fi safety: encrypt traffic on public networks (stations, cafés, hotels).
- Segmentation: restrict access per role (least privilege), log admin actions.
- Consistency: unified policy across Windows/macOS/iOS/Android.
For home users, see What is a VPN? and Best VPN Settings (UK). For routers: Router setup.
Architecture: access types
- Remote-access VPN (user-to-site): employees connect client apps to a VPN gateway; best for distributed teams.
- Site-to-site VPN: branch routers build tunnels to HQ; great for offices/warehouses.
- Hybrid: combine both (branches + remote staff).
Start remote-access first (fastest win), then add site-to-site for fixed locations.
Setup steps (SMB/SME)
- Choose gateway: business VPN service or your own appliance (router/firewall with WireGuard/OpenVPN).
- Identity: centralise accounts (IdP/SSO if available). Use per-user credentials/keys.
- Create groups: Finance, Support, Contractors etc. Map access to subnets/apps.
- Profiles: generate per-OS configs (Windows/macOS/iOS/Android). Prefer WireGuard first.
- Kill switch + DNS: enforce app kill switch and VPN DNS resolvers.
- MFA: add TOTP/Push for admin access and sensitive apps.
- Monitoring: enable connection logs (metadata only) on the gateway; alert on anomalies.
- Pilot: roll out to 3–5 users → fix edge cases → deploy to everyone.
Need app specifics? Quick starts: Windows • macOS • iOS • Android.
Device & access policy (practical)
- Device posture: OS updates, disk encryption, screen lock, AV/EDR where appropriate.
- Least privilege: default deny to internal subnets; allow per group/app/port.
- Split tunneling: allow only if needed; require full-tunnel for admin tasks.
- Contractors/guests: separate group with time-limited credentials; restrict to specific apps.
- Key/cred rotation: rotate when staff/contractors leave.
Document “how to connect” (screenshots), and add a one-page runbook for common errors.
Protocols & encryption
- WireGuard — fastest and simplest to manage; ideal for laptops/phones.
- OpenVPN TCP/443 — robust on restrictive networks (hotels, offices, campuses).
- IKEv2 — stable roaming on mobile; use where client support is strong.
Details: WireGuard vs OpenVPN vs IKEv2 (UK) • Baseline settings: Best VPN Settings.
Leak checks & logging
- DNS: enforce VPN DNS; verify with our leak checks.
- Kill switch: test once per OS (temporarily quit the app — traffic must stop).
- WebRTC: limit in browsers (esp. Chrome/Edge) on admin devices.
- Logging: keep connection metadata for ops/security (joins, duration, IP, group). Avoid storing content.
Troubleshooting
Symptom | Likely cause | Fix |
---|---|---|
Users can’t reach internal app | Missing route / ACL | Add subnet route for the app; allow group in firewall |
Disconnects on hotel Wi-Fi | UDP blocked/throttled | Switch to OpenVPN TCP/443; rotate UK endpoint |
DNS shows ISP resolvers | DNS leak | Enforce provider DNS; retest via leak guide |
Contractor sees too much | Over-permissive group | New contractor role with minimal ACLs; rotate keys |
Roll out safely
Pick a provider with audited no-logs, UK endpoints, per-group access, and solid desktop/mobile clients.
Video: Business VPN — quick UK walkthrough
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