Sun Certified Solaris(tm) 9 System and Network Administrator All-in-One Exam Guide

In this chapter, you will

• Learn about the properties of the Internet Protocol v4

• Discover the structure of IP datagrams

• Learn about IPv4 security levels

The Internet Layer involves four different protocols: the Internet Protocol (IP), the Address Resolution Protocol (ARP), and the Internet Control Message Protocol (ICMP). In the following sections, we ll investigate each of these protocols.