Day 21

Network Services

Key Topics

Today we review three important network services: Network Address Translation (NAT), Network Time Protocol (NTP) and Precision Time Protocol (PTP).

Because public IPv4 addresses are in such high demand but are subject to limited availability, many organizations use private IP addresses internally and use NAT to access public resources. Today we explore the advantages and disadvantages of using NAT and look at the different ways it can be implemented.

NTP is designed to synchronize the time on a network of machines. From a troubleshooting perspective, it is very ...

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