Remote Work = Security Risk?
An accountant working from home connected to company CRM via cafe WiFi. An attacker on the same network saw all traffic via man-in-the-middle attack.
This scenario happens daily. Solution: Private VPN.
Topology: Hub-and-Spoke (central VPN server, SPOF risk) vs Mesh (WireGuard, peer-to-peer, resilient).
Setup Steps: 1) Dedicated or cloud server Ubuntu 22.04, 2 vCPU, 4GB RAM. 2) Install WireGuard, generate keys. 3) Configure /etc/wireguard/wg0.conf with peers. 4) Firewall allow UDP 51820. 5) Client configs + QR codes.
MFA: VPN + Google Authenticator TOTP for SSH.
Zero-Trust: Firewall segmentation—accounting only to ERP port 3306, developer only to SSH port 22, marketing only to hosting panel.
Monitoring: Log VPN connections (journalctl -u wg-quick@wg0), daily report to corporate email GDPR-compliant.
Performance: MTU 1440 (1500 - 60 WireGuard overhead), multi-core CPU affinity. 100 workers: 1Gbps unmetered cloud server sufficient.
Failover: Primary vpn1.company.com (Sofia), Secondary vpn2.company.com (Istanbul), Route53 health check auto-failover.
Common Mistakes: ❌ Split-tunnel off (all traffic via VPN, Netflix breaks, worker disables VPN). ✅ Split-tunnel on (only company traffic via VPN). ❌ Password-only. ✅ Key-based + MFA.
Cost: Shared VPN /user × 50 = /month. Private VPN cloud server €80/month unlimited users = 75% savings at 50+ employees.
Compliance: VPN log retention GDPR 30 days, ISO 27001 90 days. SSL encrypted, endpoint security mandatory. EuroVDC Sofia datacenter EU-based, GDPR-compliant.