- Windows 7 64-bit host OS running VirtualBox 4.2, with Ubuntu 12.04 guest OS.
- OpenSSH server is installed and running (ssh -v localhost connects locally in the guest machine).
- Can SSH to external servers (no outbound Windows firewall rule blocking port 22)
- Can ping the IP of the guest (192.168.56.101)
Using PuTTY to SSH to the IP of the guest OS (192.168.56.101), PuTTY returns almost immediately with
Network error: connection refused
How can I diagnose & resolve this issue?