A user dials to the LNS of the company through L2TP over IPSec using the VPN client, and the final dialup fails. However, the debug ike all and debug l2tp all did not see any information on the LNS. The two stages of establishing ike failed. What are the reasons for the failure?
The figure shows the data flow direction of the Bypass interface in the Bypass working mode and the non-Bypass working mode. What are the following statements about the working flow of the electrical Bypass interface?
The testing center is responsible for detecting the traffic and sending the inspection result to the management center. The management center sends the drainage strategy to the cleaning center for drainage cleaning.
The HRP technology can implement the standby firewall without any configuration information. All the configuration information is synchronized by the main firewall to the standby firewall through HRP, and the configuration information is not lost after the restart.
Based on the following information analysis on the firewall, which of the following options are correct?
Using the virtual firewall technology, users on the two VPNs can log in to their private VPNs through the Root VFW on the public network to directly access private network resources. What are the following statements about the characteristics of the VPN multi-instance service provided by the firewall?
As shown in the figure, the firewall is dual-system hot standby. In this networking environment, all service interfaces of the firewall work in routing mode, and OSPF is configured on the upper and lower routers. Assume that the convergence time of OSPF is 30s after the fault is rectified. What is the best configuration for HRP preemption management?
In the application scenario of the virtual firewall technology, the more common service is to provide rental services to the outside. If the virtual firewall VFW1 is leased to enterprise A and the virtual firewall VFW2 is leased to enterprise B, what is the following statement incorrect?
When using the Radius server to authenticate users, (the topology is as shown below), not only must the username and password be stored on the Radius server, but the username and password must also be configured on the firewall.
The following figure shows the data packets captured during the pre-shared key mode master mode exchange process in the first phase of IKE V1. Which packet is captured below?
By default, GigabitEthernet0/0/0 can be used as an out-of-band management interface in the USG2200 series.
The first packet discarding technology of Huawei Anti-DDoS devices can defend against attack packets that continuously change the source IP address or source port number. The following is incorrect about the first packet discarding technology?
Which part of the attack packet is matched by the blacklist to achieve attack prevention?
Configure the remote packet capture function on the USG to download the device to the device. You can use the FTP server to analyze the packet.
What are the correct statements about the following VRRP and VGMP protocol messages?
USG dual-machine hot standby must meet certain conditions and can be used below. What are the following statements correct?
The key steps for configuring a virtual firewall include the following steps: 1. Configure the IP address of the interface; 2. Create a VPN instance and assign a route ID to the VPN instance; 3. Add the interface to the security zone; 4. Configure the interzone default package. Filtering rules; 5. Binding interfaces to VPN instances What is the correct order for configuration?
The hot standby and IPSec functions are combined. Which of the following statements is correct?
In IPSec VPN, which one is incorrect about the difference between the barbaric mode and the main mode?
The branch firewall of an enterprise is configured with NAT. As shown in the figure, USG_B is the NAT gateway. The USG_B is used to establish an IPSec VPN with the headquarters. Which parts of the USG_B need to be configured?
Static fingerprint filtering function, different processing methods for different messages, the following statement is correct?
The firewall device defends against the SYN Flood attack by using the technology of source legality verification. The device receives the SYN packet and sends the SYN-ACK probe packet to the source IP address host in the SYN packet. If the host exists, it will Which message is sent?