It is a must have for who wants IN-DEPTH Knowledge on TCP/IP- see amazon rating
& reviews - All 5 star reviews
The TCP/IP Guide is both an encyclopedic and comprehensible guide to the TCP/IP protocol suite that will appeal to newcomers and the seasoned professional. It details the core protocols that make TCP/IP internetworks function, and the most important classical TCP/IP applications. Its personal, easy-going writing style lets anyone understand the dozens of protocols and technologies that run the Internet, with full coverage of PPP, ARP, IP, IPv6, IP NAT, IPSec, Mobile IP, ICMP, RIP, BGP, TCP, UDP, DNS, DHCP, SNMP, FTP, SMTP, NNTP, HTTP, Telnet and much more. The author offers not only a detailed view of the TCP/IP protocol suite, but also describes networking fundamentals and the important OSI Reference Model.