Networking Seminar

What is a network and how do they effect you.
	-where did it come from
	-do we really need it?
OSI model
	-provides for independence at each layer

L1: Media/Cabling
	-types - fiber, cat5, coax
	-distances
	-pros/cons to each type
Common connections...
	-ISDN, T1/T3, OC-x, ATM, WAN, LAN, X.25
	-cost
L2: Data Link Layer
	-Switches, Hubs
	-HDLC, Frame Relay, PPP
	-MAC addressing(IEEE)
		-ARP
L3: Network Layer
	Routed Protocols:
	-tcp/ip
		-addressing schemes
		-Network Classes A,B,C,D,E
		-Masks
		-subnetting
			-8 vs. 9 bit networks
		-broadcast
		-udp
		-RARP
	-ipx/snx
	-appletalk
	-DECnet, SNA, XNS

	Routing Protocols:
		OSPF, RIP1/2, BGP4
		Spanning Tree
L4: Transport Layer
	-port #'s
	-QoS
L5: Session Layer
	-flow control
	-reassembly/ segmentation
	-start/stop transmission
L6: Presentation Layer
	-jpg, zip, txt
L7: Application Layer
	-vi, pine, nedit, mozilla

Other things:
-VLAN's 
-Port Trunking (Fast EtherChannel)
-Firewalls
-DoS, Script Kiddies
	-common attacks
		-SYN
		-buffer overflows
		-ping -f
	-how to protect yourself
-IPv6
-IPsec
-VoIP
-VPN
-The RIT network