A firewall is a barrier protecting a device from dangerous or unwanted communications. Communications occur between source and destination IP addresses using a transport protocol and port number to access a service. Commands are sent to the service port number of the offered service. Responses are returned to the port that is specified by the device initiating the communication.
Firewall administrators can block or allow traffic between two computers using:
IP addresses only
Port number of the needed service
Both IP address and service port number
There are two types of rules in SEP Cloud:
The default firewall rules in SEP Cloud are recommended and meet the needs of most companies. Default firewall rules cannot be edited, deleted, or reordered. The firewall protection level is governed by default rules.
The custom rules are the rules that are created when you use the "Add Rule" option to add an allow or block rule. You can configure the custom firewall rules that control inbound and outbound connections, which computers the rules govern, and which ports can be used to communicate.
Manual configuration of firewall rules is risky for administrators without the relevant training and experience. Badly conceived or misconfigured firewall rules can expose your company to network penetration and loss of mission-critical services. Be sure to safely test all new firewall rules before deploying them in your organization.
To configure custom firewall rules
On the Policies > Security Policy tab, you can either create a new policy from scratch or duplicate an existing policy.
To create a new policy from scratch, press the plus icon, and select Create Security Policy.
To duplicate an existing policy to use as the basis for new policy, find the policy and press the chevron icon and select Duplicate.