Managing firewall of Public Cloud

Each instance comes with its own security group that can hold a list of firewall rules to restrict access to the instance. When the instance is launched for the first time, a default firewall is created within the security group that allows traffic on all (ALL) protocol and from all IPv4 addresses (0.0.0.0/0). The firewall rules can be managed in the Customer Portal under the Security tab of the instance overview page or via the API.

1. Go to your Leaseweb Customer Portal account.
2. From the menu, select Public Cloud, choose your instance, and click Manage instance.
3. Go to the Security tab in the instance overview page.
4. Click Change firewall rules. This interface allows you to add, delete and edit rules
5. Click Add rule and provide the following details
   1. Name that identifies the rule (optional)
   2. Protocol for traffic to be allows (ALL, TCP, UDP, ICMP)
   3. Source Network is a single or range of IPv4 addresses provided in the form of CIDR notation (e.g. 1.1.1.1/32, for specifically only 1.1.1.1 IPv4 address)
   4. Destination Port Range is a port range from 1 to 65535
6. Click Add
7. When you are ready to update the firewall, click Submit.
8. The security group of the instance gets updated with your changes