多选题Which two statements are true about the Cisco Classic （CBAC） IOS Firewall set？（）AIt can be used to block bulk encryption attacksBIt can be used to protect against denial of service attacksCTraffic originating from the router is considered trusted， so it is not inspectedDBased upon the custom firewall rules， an ACL entry is statically created and added to theexisting ACL permanentlyETemporary ACL entries that allow selected traffic to pass are created and persist for theduration of the communication session
多选题
Which two statements are true about the Cisco Classic （CBAC） IOS Firewall set？（）
A
It can be used to block bulk encryption attacks
B
It can be used to protect against denial of service attacks
C
Traffic originating from the router is considered trusted， so it is not inspected
D
Based upon the custom firewall rules， an ACL entry is statically created and added to theexisting ACL permanently
E
Temporary ACL entries that allow selected traffic to pass are created and persist for theduration of the communication session
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