@KoreaNetworker hi,
as in fact, the default action of acl depends on the different service modules which the acl applied to,
you may refer to
https://support.huawei.com/hedex/hdx.do?docid=EDOC1000177841&lang=enconfiguration -> CLI-based configuration guide -> security configuration guide -> ACL configuration -> understanding ACLs -> default ACL actions and mechanisms of different service modules