This creates ca.crt (the public certificate) and ca.key (your super-secret private key).

Traditional VPNs (like OpenVPN or legacy IPSec) require all traffic to route through a central gateway server. As your team grows, this creates a bandwidth bottleneck and increases latency. Nebula solves this by establishing . A developer in Tokyo can connect directly to a database in Frankfurt without bouncing through a VPN server in New York, dramatically reducing latency and improving throughput.

Free tiers usually offer a restricted selection of server locations. If the available servers are geographically distant from your actual location, your connection speed will decrease significantly. 3. Security Vulnerabilities