更新时间：2021-06-10 18:23:18
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Preface
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What this book covers
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The OSI Reference Model and the TCP/IP Stack
The OSI reference model
Relationship between the Protocol Data Unit (PDU) and Service Data Unit (SDU)
The seven layers of the OSI model
Application Layer
Presentation Layer
Session Layer
Transport Layer
Network Layer
Data Link Layer
Physical Layer
Communication using the relay system
The TCP/IP protocol suite
The four layers of the TCP/IP protocol suite
Communication using the TCP/IP protocol suite
Summary
Questions
Network Ports Protocols and Topologies
Technical requirements
Network port numbers
Network protocols
Protocol types
ICMP
ICMP message types
ICMP Type 0 – Echo Reply
ICMP Type 3 – Destination Unreachable
ICMP Type 5 – Redirect
ICMP Type 8 – Echo Request
ICMP Type 11 – Time Exceeded
TCP
User Datagram Protocol (UDP)
Comparison of TCP and UDP
IP
Protocols and ports
File Transfer Protocol (FTP)
Secure Shell (SSH) Secure Copy (SCP) and Secure FTP (SFTP)
Telnet
Simple Mail Transfer Protocol (SMTP)
Domain Name System (DNS)
Dynamic Host Configuration Protocol (DHCP)
Trivial File Transfer Protocol (TFTP)
Hypertext Transfer Protocol (HTTP)
Post Office Protocol (POP)
Network Time Protocol (NTP)
Internet Message Access Protocol (IMAP)
Simple Network Management Protocol (SNMP)
Lightweight Directory Access Protocol (LDAP)
HTTP Secure (HTTPS)
Server Message Block (SMB)
Remote Desktop Protocol (RDP)
Network topologies
Star
Ring
Bus
Hub and spoke
Mesh
Hybrid
Tree
Types of networks
Introducing Ethernet and its evolution
Further reading
Ethernet
What is Ethernet?
The sublayers of Ethernet
The Data Link Layer
The LLC sublayer
The MAC sublayer
Fields in an Ethernet frame
MAC addresses
Transmission types at the Data Link Layer
The CAM table
Understanding IPv4 and IPv6
IPv4 concepts
Converting binary into decimal
Converting decimal into binary
The format of an IPv4 packet
Public IPv4 addresses
Private IPv4 addresses
Subnet mask
