Service is an information stream designed with protocol standards. Service has some specific distinguishing features, like corresponding protocol, port number, etc. For example, the FTP service uses TCP protocol, and its port number is 21. Service is an essential element for the configuration of multiple
System ships with multiple predefined services/service groups. Besides, you can also customize user-defined services/service groups as needed. All these service/service groups are stored in and managed by
Predefined Service/Service Group
System ships with multiple predefined services, and identifies the corresponding application types based on the service ports. The supported predefined services may vary from different
Except for the above predefined services, you can also create your own user-defined services easily. The parameters that will be specified for the user-defined service entries include:
- Protocol type
- The source and destination port for TCP or UDP service, and the type and code value for ICMP service.
User-defined Service Group
You can organize some services together to form a service group, and apply the service group to
- Each service of the service book can be used by one or more service groups.
- A service group can contain both predefined services and user-defined services.
- A service group can contain another service group. The service group of StoneOS supports up to 8 layers of nests.
The service group also has the following limitations:
- The name of a service and service group should not be identical.
- A service group being used by any policy cannot be deleted. To delete such a service group, you must first end its relationship with the other modules.
- If a user-defined service is deleted from a service group, the service will also be deleted from all of the service groups using it.