View Ingress Rules
Access to virtual machines are controlled by ingress rules in security groups. To connect to your virtual machine, you need to know what the rules are so that they can be adjusted if necessary. To view your machine's rules, clicking on the "Security Groups" tab. This will display all of the security groups that are associated. If you hover over the "View Rules" line to the far right, a summary of the rules that are contained in that particular group will be displayed.
If you need to modify rules, you can jump directly to the security group rules management window by clicking on the particular group name.
For more information on how to manage your security group, go HERE