B.

The gateway is not routing to a public IP address.

Explanation:
https://en.wikipedia.org/wiki/Private_network
In IP networking, a private network is a computer network that uses private IP address
space. Both the IPv4 and the IPv6 specifications define private IP address ranges. These
addresses are commonly used for local area networks (LANs) in residential, office, and
enterprise environments.
Private network addresses are not allocated to any specific organization. Anyone may use
these addresses without approval from regional or local Internet registries. Private IP
address spaces were originally defined to assist in delaying IPv4 address exhaustion. IP
packets originating from or addressed to a private IP address cannot be routed through the
public Internet.
The Internet Engineering Task Force (IETF) has directed the Internet Assigned Numbers
Authority (IANA) to reserve the following IPv4 address ranges for private networks:
· 10.0.0.0 – 10.255.255.255
· 172.16.0.0 – 172.31.255.255
· 192.168.0.0 – 192.168.255.255
Backbone routers do not allow packets from or to internal IP addresses. That is, intranet
machines, if no measures are taken, are isolated from the Internet. However, several
technologies allow such machines to connect to the Internet.
· Mediation servers like IRC, Usenet, SMTP and Proxy server
· Network address translation (NAT)
· Tunneling protocol
NOTE: So, the problem is just one of these technologies.

B.

WS-Address spoofing

Explanation: WS-Address provides additional routing information in the SOAP header to
support asynchronous communication. This technique allows the transmission of web
service requests and response messages using different TCP connections
https://www.google.com/search?client=firefox-b-d&q=WS-Address+spoofing
CEH V11 Module 14 Page 1896

A.

Educate everyone with books, articles and training on risk analysis, vulnerabilities and
safeguards.

A.

The WAP does not recognize the client’s MAC address

Explanation: https://en.wikipedia.org/wiki/MAC_filtering
MAC filtering is a security method based on access control. Each address is assigned a
48-bit address, which is used to determine whether we can access a network or not. It
helps in listing a set of allowed devices that you need on your Wi-Fi and the list of denied
devices that you don’t want on your Wi-Fi. It helps in preventing unwanted access to the
network. In a way, we can blacklist or white list certain computers based on their MAC
address. We can configure the filter to allow connection only to those devices included in
the white list. White lists provide greater security than blacklists because the router grants
access only to selected devices.
It is used on enterprise wireless networks having multiple access points to prevent clients
from communicating with each other. The access point can be configured only to allow
clients to talk to the default gateway, but not other wireless clients. It increases the
efficiency of access to a network.
The router allows configuring a list of allowed MAC addresses in its web interface, allowing
you to choose which devices can connect to your network. The router has several functions
designed to improve the network's security, but not all are useful. Media access control
may seem advantageous, but there are certain flaws.
On a wireless network, the device with the proper credentials such as SSID and password
can authenticate with the router and join the network, which gets an IP address and access
to the internet and any shared resources.
MAC address filtering adds an extra layer of security that checks the device’s MAC address
against a list of agreed addresses. If the client’s address matches one on the router’s list,
access is granted; otherwise, it doesn’t join the network.

D.

Spearphone attack

A.

ESP transport mode

D. Error-based SOL Injection

B.

Footprinting