Policy > Object > Service Book
Service is 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 modules including policy rules, NAT rules, QoS rules, etc.
The system provides you with multiple predefined services. Besides, you can also customize user-defined services if needed. You can add multiple services to a service group, which can be used in other modules such as policy rules, NAT rules, and QoS rules.
In the Service tab, you can perform the following actions:
Options in the Service Configuration dialog:
Option | Description |
Service |
Type the name for the user-defined service into the textbox. |
Rule Description |
Specify a protocol type for the user-defined service. The available options include TCP, UDP, ICMP and Others.
|
Service Description |
If needed, type the description for the service into the textbox. |
Tip: With the Service tab active, select a service. You can view the service information at the bottom-left corner and all objects that reference this service at the bottom-right corner.
In the Service Group page, you can perform the following actions:
Options in the Service Group Configuration:
Option | Description |
Name |
Type the name for the user-defined service group into the textbox. |
Description |
If needed, type the description for the service into the textbox. |
Member |
Add services or service groups to the service group. The system supports at most 8-layer nested service group. Expand Pre-defined Service Group or User-defined Service Group from the left pane, select services or service groups, and then click Add to add them to the right pane. To remove a selected service, select it from the right pane, and then click Remove. |