Using Project 4 Final Project description list and Identify

Using Project 4 (Final Project) description, list and Identify the IP address types (A, B, C) of the different segments of the network and their network addresses. Calculate the maximum number of hosts which can be assigned based on the network addresses you have identified. Using the same project description, if Morgan State University intends to add a different Local Area Network (LAN) and connect it to the already existing network via WAN or allow an employee to access parts of the network remotely, how can this be achieved and discuss the security issue associated with it.

Solution

1.There were five IP address classes in use before the majority of industry switched to classless routing. There were A, B, C, D, and E. Class A addresses were used for networks with a very large number of total hosts. Class B was designed for use on medium to large networks, and C for small local area networks (LANs). Class D and E were set aside for multicast and experimental purposes. In the following table, the four octets that make up an IP address (a, b, c, and d respectfully) are displayed in how they were distributed in classes A, B, and C.
classes A, B, and C
Class    IP Address    Network ID    Host ID
A    a.b.c.d    a             b.c.d
B    a.b.c.d    a.b             c.d
C    a.b.c.d    a.b.c              d

Class A IP Address

Class A IP addresses were used for networks that had a large number of hosts on the network. The class permitted up to 126 networks by using the first octet of the address for the network identification. The first bit in this octet was always fixed or set to be zero. The following seven bits in the octet were then set to one which would complete the network identification. The remaining octets (24 bits) represented the hosts ID and would allow up to 126 networks with 17 million hosts per network. In a Class A address, the network number values start at the number 1 and end at 127.

Class B IP Address

Class B IP address were assigned to medium to large networks. They allow 16,384 networks by using the first two octets in the address for the network identification. The first two bits of the first octet are fixed to 1 0. The next 6 bits along with the following octet then complete the network identification. The third and fourth octet (16 bits) then represents the host ID. This allows approximately 65,000 hosts per network. Class B network number values start at 128 and finish at 191.
Class C IP addresses were used in small LAN configurations. They allow for approximately 2 million networks by using the first three octets of the address for the network identification. In a Class C address, the first three bits are fixed to 1 1 0. In the following three octets, 21 bits make up the network identification. The last octet then represents the host identification. This allows for 254 hosts per network. A Class C network number value starts at 192 and ends at 223.
Class D IP Address

Class D IP addresses were reserved for multicasting purposes. These addresses begin with an octet in the 224-239 range. They would have leading bits of 1 1 1 0 and includes addresses from 224.0.0.0 to 239.255.255.255.
Class E IP Address

Class E IP addresses are reserved for experimental use. The first octet of these addresses ranges between 240 and 255. This range is reserved by the IETF and similar to Class D networks, should not be assigned to a host device
2.
Connecting one of the Ethernet ports (LAN ports) of the main router to the Internet port (WAN port) of the secondary router.

This type of cascading requires the main router and the secondary router to have different IP segments. This connection makes it easier to identify which router the computers and other devices in the network are connected to since they will have different LAN IP segments. However, computers that are connected to the main router will not be able to communicate with the secondary router, and vice versa since there are two (2) different networks
Cascading the router to another router (LAN-WAN)

Step 1:
Check and take note of the IP address of the main router. For detailed instructions on how to do this, click here.

Step 2:
Connect your computer to one of the Ethernet ports of the secondary router.
Step 3:
Access the setup page of the secondary router. For instructions, click here. If you’re using a Mac® computer, click here.

Step 4:
Under the Basic Setup sub-tab, look for IP Address or Local IP Address.
Step 5:
Click Save Settings.

Step 6:
Unplug the cable from your computer and connect it to one of the Ethernet ports on the main router.

Step 7:
Transfer the Ethernet cable connected to the secondary router to its Internet port.