Which of the following refers to the network scanning techniques that indicate the active host within the range of IP addresses? O Run exploitation tools O Run vulnerability scanners O Port scan O Ping sweep
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- Which of the following statements about firewalls is true? A firewall with a packet filter may block harmful files. Firewalls with packet filters simply accept or reject data packets; they never provide feedback to the source. Each packet that travels through the firewall will be examined by the packet filter firewall. Firewalls using packet filters may examine the application layerWhich of the following attacks leverage spoofed IP addresses? DNS cache poisoning attacks. RST reset attacks launched by a censor. DNS injection attacks launched by a censor. TCP session hijacking.We ran the following test to determine the firewall type (Statefull or Stateless) of our network: We routed packets to our firewall from both internal and external hosts and tracked its operations. The actions taken by the firewall after receiving the packets are shown in the table below. Determine the kind of your firewall by examining the contents of the table below. Direction Source IP Destination IP Protocol Source port Destination port Syn Ack Firewall's action UDP 2400 Allowed TCP Allowed TCP TCP In In Out In Out Out IP1 1P1 IP2 IPS IP4 IP3 IP2 IP2 IP1 IP2 IP6 IP4 The firewall is statefull. The firewall is stateless I cannot decide. None of them UDP TCP 2000 25 2000 7000 3000 24 25 2000 25 90 80 1 0 1 1 10 1 - H 0 1 Allowed Allowed Denied Allowed
- Which of the following statements is NOT true? Question 46 options: IP Address Spoofing attacks can be prevented by using Stateful Firewalls Static Packet Filter Firewalls are Stateless (no session information recorded) Static Packet Filter Firewalls can deal with port-switching applications A Spoofed TCP SYN/ACK Segment can be dropped by a stateful inspection firewall2. Emilie is reviewing a log file of a new firewall. She notes that the log indicates packets are being dropped for incoming packets for which the internal endpoint did not initially create the request. What kind of firewall is this? a. Proxy firewall b. Connection-aware firewall c. Stateful packet filtering d. Packet filtering firewallWhich of these statements about firewalls is true? Malicious files can be kept out by a packet filter fence. Packet filter firewalls only let data packets in or out, but they never send input to the source. message filter blocker will look at every message that goes through it. The application layer can be checked by a packet filter blocker.
- In addition to source and destination address and port information, stateful firewalls use a state flag to identify the current status of a connection. Which of the following possible state values indicates that the third step in the three-way handshake has been completed and a connection between two hosts has been created?SYN_RECVESTABLISHEDFIN_WAIT1CLOSEDattack that exploits the TCP three-way handshake to consume resources on the targeted server and disable the server to respond to legitimate connection requests a. UPD Flood b. SYN SPOOFING c. ICMP Flood d. Ping to deathWhat information is used by a typical packet-filtering firewall to filter traffic? (Select all that apply) a. Transport protocol header source port Ob. IP header source IP address O c. Application type Od. IP header destination IP address Oe. Transport protocol header destination port Of. Heuristic traffic signatures
- Your firewall is configured to allow traffic to flow in and out of your network. GIVEN THE SETTING BELOW FOR THE FIREWALL RULE: Rule Name: DNS Rule Source IP: DNS / Source Port: 53 Destination IP: Any / Destination Port: * Protocol: Any What traffic flows through the firewall? IF SOME ACTIVE ATTACKS ARE ADDED FROM THE LIST. Is the rule sufficient to allow traffic to flow for a typical network? Why or why not? Do any of the active attacks now work against machines behind the firewall?SNMP is a protocol used to manage network equipment and is supported by most network equipment manufacturers. Which of the following is not true about SNMP? Question 7 options: It allows administrators to remotely monitor, manage, and configure network devices. It can be used on networks of any size Security vulnerabilities were present in SMNP versions 3. SNMP allows exchanging management information between network devices.When it comes to firewalls, which of the following is TRUE? Using a packet filter firewall, harmful data may be filtered out. No feedback is ever sent to the sender when using a packet filter firewall; they just allow or disallow packets. Each data packet entering and leaving the network is inspected by a packet filter firewall. The application layer may be inspected by a packet filtering firewall.
