Transcript CCNA 1 Module 11 TCP/IP Transport and Application Layers

CCNA 2 v3.1 Module 10
Intermediate TCP/IP
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Purpose of This PowerPoint
• This PowerPoint primarily consists of the Target
Indicators (TIs) of this module in CCNA version
3.1.
• It was created to give instructors a PowerPoint to
take and modify as their own.
• This PowerPoint is:
NOT a study guide for the module final assessment.
NOT a study guide for the CCNA certification exam.
• Please report any mistakes you find in this
PowerPoint by using the Academy Connection
Help link.
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2
To Locate Instructional Resource
Materials on Academy Connection:
• Go to the Community FTP Center to locate
materials created by the instructor community
• Go to the Tools section
• Go to the Alpha Preview section
• Go to the Community link under Resources
• See the resources available on the Class home
page for classes you are offering
• Search http://www.cisco.com
• Contact your parent academy!
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Objectives
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TCP Operation
The transport layer is responsible for the
reliable transport of and regulation of data
flow from source to destination.
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5
Synchronization or Three-Way
Handshake
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6
Denial-of-Service Attacks
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Simple Windowing
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TCP Sequence and Acknowledgment
Numbers
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Positive ACK
• Acknowledgement is a common step in
the synchronization process which
includes sliding windows and data
sequencing.
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Protocol Graph: TCP/IP
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UDP Segment Format
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Port Numbers
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Telnet Port Numbers
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Reserved TCP and UDP Port Numbers
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Ports for Clients
• Whenever a client connects to a service
on a server, a source and destination port
must be specified.
• TCP and UDP segments contain fields for
source and destination ports.
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Port Numbering and Well-Known Port
Numbers
• Port numbers are divided into three
different categories:
well-known ports
registered ports
dynamic or private ports
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Port Numbers and Socket
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Comparison of MAC addresses, IP
addresses, and port numbers
• A good analogy can be made with a
normal letter.
• The name on the envelope would be
equivalent to a port number, the street
address is the MAC, and the city and state
is the IP address.
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Summary
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