By default the VMs in vCloud Air doesn’t not connect to internet. We need to configure the SNAT/DNAT rules to allow the internet connectivity in both ways.
Below is the procedure to allow internet access to a VM in vCloud Air OnDemand.
Add Public IP –> Configure SNAT Rules –> Validate the Connectivity
Add a Public IP to a Gateway in vCloud Air OnDemand
Click Gateways –> Public Ips –> Add IP Address
Create a SNAT Rule
Now the VMs connected to the org-network associated with the gateway will be to connect to internet.