VirtualBox network modes
As covered in the VirtualBox networking docs, the quickest overview into different networking modes is the following table:
| VM ↔ VM | VM → Host | Host → VM | VM → Net/LAN | Net/LAN → VM | |
|---|---|---|---|---|---|
| Not attached | - | - | - | - | - |
| Internal Network | + | - | - | - | - |
| Host-only | + | + | + | - | - |
| NAT | - | + | forwarded ports | + | forwarded ports |
| NAT Network | + | + | forwarded ports | + | forwarded ports |
| Bridged | + | + | + | + | + |
In short, bridged networking happily allows everything, while other less permissive modes give you granular control over your network security.