1. Planning the Addressing Structure
Working at a Small-to-Medium Business or ISP – Chapter 4

2. Objectives Describe how IP Addressing is implemented in the LAN
Subnet a given network to allow for efficient use of IP address space
Explain how Network Address Translation (NAT) and Port Address Translation (PAT) are used in a network

3. Implementation of IP Addressing in the LAN
Review the purpose of an IP address
Review IP address hierarchical structure
Review the classes of IP addresses

4. Implementation of IP Addressing in the LAN
Describe classful subnetting including how subnet masks are used in calculations for addressing and routing, and IP address notation for subnet masks

5. Implementation of IP Addressing in the LAN
Identify the number of subnet bits required for a given network implementation

6. Classless Subnetting
CIDR
VLSM

7. Creating Custom Subnet Masks
Communicating between subnets

8. Implementation of IP Addressing in the LAN
Describe the origin, purpose, and function of IPv6

9. Using Network Address Translation in a Network
Describe the purpose and function of network address translation (NAT) and how it is implemented

10. Using Network Address Translation in a Network
Define the terms used to describe how packets are transported across a NAT configuration

11. Using Network Address Translation in a Network
Compare static and dynamic IP NAT and describe when each should be used

12. Using Network Address Translation in a Network
Describe the purpose and function of Port-based Address Translation (PAT) within a NAT configuration

13. Using Network Address Translation in a Network
Identify possible issues within a network due to NAT configuration implementation

14. Summary
IP addressing can be tailored to the needs of the network design through the use of custom subnet masks.
Classless subnetting gives classful IP addressing schemes more flexibility through the use of variable length subnet masks.
Network Address Translation (NAT) is a way to shield private addresses from outside users.
Port Address Translation (PAT) translates multiple local addresses to a single global IP address, maximizing the use of both private and public IP addresses.