Includes a rich set of functions to test access control requirements, such as the user's IP address, time and date, or whether the user's name appears in a given list.
包括用于测试访问控制要求的丰富功能集，例如用户的IP地址、时间和日期，或用户的名称是否出现在给定的列表中。
One can control any IP addresses to access a network to set up a router access-control-list, but a normal ACL can not be implemented to access a network unilaterally.
通过建立路由器访问控制列表，可以控制任何IP地址对网络的访问，但要实现网络的单向访问，一般的访问列表是无法做到的。
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