networking fundamentals some principles jon carhart
TRANSCRIPT
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Networking Fundamentals
Some principles
Jon Carhart
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What we will do(ish) ….
• OSI – – Physical– Data Link– Network
• Subnets• Subnet Masks• Network Configuration• Encapsulation• Ports and Server• More for next time
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By Yngvar [Public domain], via Wikimedia Commons
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"ARPANET first router 2" by Steve Jurvetson from Menlo Park, USA - derived from File:ARPANET first router.jpg (mildened persective, levels, rebuilt low-right corner). Licenced under Creative Commons Attribution 2.0 via Wikimedia Commons - http://commons.wikimedia.org/wiki/File:ARPANET_first_router_2.jpg#mediaviewer/File:ARPANET_first_router_2.jpg
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OSI
Physical Medium WiFi\UTP
Data Link Local Net Ethernet
Network Routing IP
Wire
Switch
Router
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S w it c h
MAC: A1
MAC: A8
S w it c h
MAC: A1
MAC: A7
S w it c h
Router A Router B
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OSI
Physical Medium WiFi\UTP
Data Link Local Net Ethernet
Network Routable IP
Wire
Switch
Router
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SUBNETS
192.168.2.X
192.168.2 .7
Network Host
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Subnet Masks
255.255.255.0
255.255.255 .0
Network Host
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Network Configuration
My IP =
My Subnet Mask =
My MAC Address =
192.168.2.7
255.255.255.0
192.168.2.1My Default Gateway =
00:X4:A7
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Server001
Ports and Servers
WebServer
:80
192.168.4.5
:386
LDAP Server
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Commands
• netstat –abn• ipconfig /all• telnet 127.0.0.1 80
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Next time ….
• Encapsulation• Address classes• DNS – Domain Naming Services• IPv6• OSI– Transport– Session– Presentation– Application