Network Addressing and Security***Already A++ Rated Tutorial*Use as Guide Paper***

Network Addressing and Security (i.e., Part 2)

In this section, address each of the following.

IP Addressing:

1. Review the Network Address Template attached on this page.

2. Complete the subnet chart provided at the end of the document.

1. Security

1. Select each of the firewall types to implement, describe network or host-based placement, and configuration details; and justify each of the decisions.

2. Students should be specific when discussing the models, types, and costs.

3. Select an IDS, IPS, or both for the network and justify your decision.

4. Students should be specific when discussing the models, types, and costs.

5. Define a DMZ implementation and justify the decision.

6. Select physical security measures for each of the new academic buildings and justify the decision.

7. Students should be specific when discussing the models, types, and costs.

8. Select additional network security measures to be implemented and justify the decision. They should include:

9. How you will protect against social engineering attacks, and justify your decision.

10. How you will protect against faculty or students willingly, or unwillingly introducing malware onto the network, and justify your decision.

11. What secure protocols you will require for faculty and students to use while accessing resources internal, or external to the network, and justify your decision.

II. Network Addressing and Security

A. Subnetting

Overview

Subnetting is a process of breaking a large network into small networks known as subnets. Subnetting happens when we extend the default boundary of the subnet mask. Basically we borrow host bits to create networks (i.e., subnets).

We have been assigned the network address 199.1.2.0. Based on the chart below, we know this is a Class C address. This is determined by observing the first octet of the IP address, which is 199. This octet falls in between 192 and 223.

Class	Octet Decimal Range
A	1 - 126
B	128 - 191
C	192 - 223

Each class has a predefined default subnet mask that tells us the octets, which are already part of the network portion, as well as how many bits we have available to work with.

Class	Subnet Mask	Format
A	255.0.0.0	Network.Host.Host.Host
B	255.255.0.0	Network.Network.Host.Host
C	255.255.255.0	Network.Network.Network.Host

CIDR (Classless Inter Domain Routing)

CIDR is a slash notation of the subnet mask. CIDR tells us the number of on bits in a network address.

● Class A has default subnet mask 255.0.0.0. that means first octet of the subnet mask has all on bits. In slash notation it would be written as /8, means address has 8 bits on.

● Class B has default subnet mask 255.255.0.0. that means first two octets of the subnet mask have all on bits. In slash notation it would be written as /16, means address has 16 bits on.

● Class C has default subnet mask 255.255.255.0. that means first three octets of the subnet mask have all on bits. In slash notation it would be written as /24, means address has 24 bits on.

Technical Requirements

THE SCHOOL has not decided how they will use all of the physical space within the two new leased buildings. However, they have decided to use some of the space for a total of eight offices. Specifically, the initial setup will include four classrooms, one computer lab, one administrative office, one library, and one shared printer office.

Given the aforementioned scenario, we are going to use the 199.1.2.0 network and create a total of 8 subnets, with 25 hosts on each subnet. The chart below describes structures the scenario to include each subnet and required hosts.

Subnet Description	Required Hosts
Classroom 1	25 Computers
Classroom 2	25 Computers
Classroom 3	25 Computers
Classroom 4	25 Computers
Computer Lab	25 Computers
Administrative Office	25 Computers
Library	25 Computers
Shared Printers	14 Printers

Using the How to Subnet a Network Video provided in CMIT 265 LEO - Content - THE SCHOOL Network Design Proposal, complete the following chart.

Proposed Subnet

Subnet	Network Address	Host Address Range	Broadcast Address
Subnet Mask: 255.255.255._____
Classroom 1	199.1.2.0	199.1.2.1 - 199.1.2.30	199.1.2.31
Classroom 2	199.1.2._	199.1.2._ - 199.1.2._	199.1.2._
Classroom 3	199.1.2._	199.1.2._ - 199.1.2._	199.1.2._
Classroom 4	199.1.2.96	199.1.2.97 - 199.1.2.126	199.1.2.127
Classroom 5	199.1.2.128	199.1.2.129 - 199.1.2.158	199.1.2.159
Classroom 6	199.1.2._	199.1.2._ - 199.1.2._	199.1.2._
Library Lab	199.1.2._	199.1.2._ - 199.1.2._	199.1.2._
Office Network	199.1.2._	199.1.2._ - 199.1.2._	199.1.2._

B. Firewall Implementation

Technical Requirements

In this section, you will assess THE SCHOOL’s technical requirements related to the firewall implementation. You will need to make assumptions where appropriate. When making assumptions, list each and make sure to justify the solution in the Justification section.

Proposed Network Security Hardware

This section should be used to provide the details of your proposed solution, based on the technical requirements and assumptions. Student should be specific when discussing the models, types, and costs.

Justification