Virtual firewall virtualizes multiple logical firewalls on a physical firewall device and implements multiple instances?
Note: Virtual firewalls are a combination of VPN instances (Instances), instances of multiple instances, and configuration of multiple instances. The virtual firewall provides the following multiple instances: one is VPN multi-instance; the other is secure multi-instance; the third is to configure multiple instances; the fourth is NAT multi-instance; the fifth is routing multi-instance; the sixth is UTM multi-instance.
Static fingerprint filtering function, different processing methods for different messages, the following statement is correct?
Note: By configuring a static fingerprint, the packets that hit the fingerprint are processed accordingly to defend against attack traffic. First, the TCP/UDP/custom service can extract fingerprints based on the payload (that is, the data segment of the packet); second, the DNS packet extracts the fingerprint for the domain name; and third, the HTTP packet is extracted for the Uniform Resource Identifier (URI). fingerprint.
Virtual firewall virtualizes multiple logical firewalls on a physical firewall device and implements multiple instances?
Note: Virtual firewalls are a combination of VPN instances (Instances), instances of multiple instances, and configuration of multiple instances. The virtual firewall provides the following multiple instances: one is VPN multi-instance; the other is secure multi-instance; the third is to configure multiple instances; the fourth is NAT multi-instance; the fifth is routing multi-instance; the sixth is UTM multi-instance.
An administrator can view the status of the device components by the following command: The status of the Slot3 board is Abnormal. What are the possible causes of the following faults?
USG A and USG B are configured with a static BFD session. The following is true about the process of establishing and tearing down a BFD session.
Note: 1. USG A and USG B each start the BFD state machine. The initial state is Down and the BFD packet is Down. For a static BFD session, the value of the Your Discriminator is specified by the user. For the dynamic BFD session, the value of the Your Discriminator is 0. 2. After receiving the BFD packet whose status is Down, the USG B switches to Init. And send a BFD packet with the status of Init. 3. If the local BFD state of USG B is Init, the packets of the received state are Down. 4. The BFD state of USG A is the same as that of USG B. 5. After receiving the BFD packet in the Init state, the local state is switched to Up. 6. The BFD status of USG A changes with USG B. 7. After the state transition of 'DOWN-->INIT' occurs on USG A and USG B, a timeout timer is started. If the BFD packet is in the Init or Up state, the local state is automatically switched back to Down.
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