https://www.juniper.net/documentation/us/en/software/ccfips24.4/cc-security_srx5000/cc-security/topics/task/configuring-tcp-port-scan-attack.html
Configuring TCP Port Scan Attack Screen | CCFIPS Guides 24.4 | Juniper Networks
This topic describes how to configure detection of a TCP port scan attack.
tcp port scan