We use security objects on security policies called services (sometimes: applications) to represent an application based on its protocol and port number.
You can learn more about juniper on junosgenius.net
You can use GNS3, EVE-NG, Juniper vLabs for this practice lab:
GNS3: • 02# Add Juniper vSRX 20.1R1 on GNS3 and Th...
EVE-NG: • 03# Add Juniper vSRX 20.1R1 on EVE-NG and ...
Juniper vLabs: • How to use Juniper vLabs for Practice usin...
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