Configuring Firewall Access for Wireless Laptops without Static IPs
Question
A user calls the help desk for assistance with setting up a new SOHO router.
The user has three employees who all have laptops that need to connect to the wireless network.
The users need to have firewall rules allowing access to an internal server, but cannot be configured with static IP addresses.
Which of the following BEST describes what the technician should implement?
A.
CNAME record in the users' dynamic DNS accounts B.
Additional lease time for the laptop computers C.
IP helper relay system for configuration hops D.
DHCP reservation for the laptops' MACs.
D.
Explanations
A user calls the help desk for assistance with setting up a new SOHO router.
The user has three employees who all have laptops that need to connect to the wireless network.
The users need to have firewall rules allowing access to an internal server, but cannot be configured with static IP addresses.
Which of the following BEST describes what the technician should implement?
A.
CNAME record in the users' dynamic DNS accounts
B.
Additional lease time for the laptop computers
C.
IP helper relay system for configuration hops
D.
DHCP reservation for the laptops' MACs.
D.
The best solution for this scenario is to implement DHCP reservation for the laptops' MAC addresses. DHCP reservation is a process of assigning a specific IP address to a device on a network, based on its MAC address. This allows the laptops to receive an IP address dynamically from the DHCP server without having to configure static IP addresses manually. At the same time, the DHCP reservation ensures that the laptops always receive the same IP address every time they connect to the network, which is necessary for the firewall rules to work consistently.
CNAME record in the users' dynamic DNS accounts (option A) is not relevant to the scenario as it is used to create an alias for a domain name, and has no impact on the network setup.
Additional lease time for the laptop computers (option B) refers to the time period for which the DHCP server assigns an IP address to a device. However, this does not address the issue of firewall rules and is not a reliable solution.
IP helper relay system for configuration hops (option C) is used to forward DHCP and other network traffic between subnets. However, this is not necessary for this scenario since all the devices are on the same subnet.
Therefore, DHCP reservation for the laptops' MAC addresses (option D) is the most appropriate solution for this scenario as it enables the laptops to receive a dynamic IP address while ensuring that they always receive the same IP address for the firewall rules to work.
