Oracle VirtualBox online course

Networking modes

NAT, bridged, host-only, and internal.

• NAT — outbound internet, inbound only if you add port forwards.
• Bridged — guest on the real LAN.
• Host-only — host and guest, no LAN.
• Internal — guests see each other, not the host.

A common lab is NAT for packages plus a host-only NIC for SSH from the host. Two adapters, two jobs.