A service is a mnemonic for configuring the source/destination port in an ACL template. You can use a service to set the port variable, which simplifies the operation. A service consists of a service name and a port set. For example, you can set port 23 as Telnet, and the port group from 1001 to 1010 as John Co. ltd. Then you can directly select John Co. ltd instead of typing ports 1001 to 1010 when configuring ACLs in batches.
To view the service list:
Click the Service tab, and then select Assistant in the navigation tree to open the Assistant Management page. By default, the service management page appears, displaying the following information of existing services: