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VCE
Packet filtering firewall main featuresinclude: (Choose three)
A. With the complexity and increase the length of ACL,the firewall filtering performance exponentially decreasing trend
B. ACL rules difficult to adapt static dynamic security filtering requirements
C. Do not check the session state data is not analyzed,it is very easy for hackers to get away
D. Complete control of the network to exchange information and control the session,with high security
The following are symmetric encryption algorithm is:(Choose two)
A. DES
B. 3DES
C. SHA-1
D. MD5
Proxy firewalls need to develop a protocol for each application layer proxy,long development cycle, but it is difficult to upgrade.
A. True
B. False