A.SW1#shows withport port-security interface FastEthernet0/12 B.SW1#shows withport port-secure interface FastEthernet0/12 C.SW1#show port-secure interface FastEthernet0/12 D.SW1#show running-config
A.允許125.36.0.0/16網段的主機使用FTP協(xié)議訪問主機129.1.1.1; B.不讓任何主機使用Telnet登錄; C.拒絕一切數據包通過; D.僅允許某個用戶從外部登錄,其他用戶不能這樣做。
A.to control vty access into a router B.to control broadcast traffic through a router C.to filter traffic as it passes through a router D.to filter traffic that originates from the router E.to replace passwords as a line of defense against security incursions