To create security group and rules:
On the left pane, click Project > Compute > Access & Security. The Access & Security screen is displayed.
Provide a name and description for the Security Group. Click Create Security Group.
Under Actions column, click Manage Rules from the new security group.
Click Add Rule to define the rules for a particular security group.
Select All ICMP from Rule drop-down menu.
Select Ingress from Direction drop-down menu.
Select CIDR from Remote drop-down menu.
Specify 0.0.0.0/0 as CIDR.
Click Add.
The following screen displays the security rules added for the newly defined security group.