1. Internet protocol stack
users
network
Application
HTTP, SMTP, FTP, TELNET, DNS, …
Transport
TCP, UDP.
Network IP
Physical
Point-to-point links,
LANs, radios, ...
2: Application Layer

2. Network Layer (partial)
Basics
Link-state vs Distance Vector (know which one is which)
Intra AS vs Inter AS
Hierarchical Routing
Specifics
RIP, OSPF, BGP
Router Internals
Hands-on
Internet Topology
Configuring Routers (couldn’t do )
2: Application Layer

3. Network Layer Extensions
What might we want to add to the basic network layer functionality of getting a datagram from source to destination
Basics
IP Encapsulation and Tunneling
Specifics
IPv6
Multicast
VPN
MobileIP
NAT
2: Application Layer

4. Link Layer Basics Specifics Hands-on Error Detection/Correction
Multiple Access Protocols
Specifics
TDMA, CSMA/CD, CSMA/CA, Polling, Token Ring
Ethernet
PPP
ATM, X.25, FrameRelay – why in this layer?
Hands-on
arp
2: Application Layer

5. Security Basics Specifics Hands-on Symmetric vs Public Key
Digital Signatures
Authentication
Key Distribution Centers and Certification Authorities
Specifics
Dynamic Routing or ICMP attacks
IP Spoofing
Replacing rsh or telnet with ssh
PGP (Distributed Trust)
Denial of Service, Buffer Overflows
SSL, IPSec
Hands-on
TCP Session Stealing
2: Application Layer