A VPN Client is a software that connects a user's device to a VPN server, allowing secure, encrypted connections over potentially insecure networks like the internet. Coursera's VPN Clients catalogue teaches you about the technology that enables private, secure browsing and remote access to internal networks. You'll learn everything from the fundamentals of VPN technology, setting up and configuring VPN clients, understanding the security protocols involved, to managing and troubleshooting VPN connections. This knowledge will equip you to ensure secure data transmission, understand network security better, and manage remote access efficiently in various IT roles.