Site-to-Site VPN Setup for Remote Work

I need a VPN setup to enable secure remote work for my employees. The VPN should be both Site-to-Site and Remote Access. Requirements: - Connects securely: Desktops, Laptops, and Servers - Standard encryption... (Budget: $15 - $25 USD, Jobs: Linux, Network Administration, Network Engineering, Network Security, Security Auditing, System Admin, VPN, Windows Server)