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Table of contents
Slide 1
One Way Functions, Hashes and Authentication
One Way Functions
Slide 4
Hash Functions
Authentication
A Quick Note: MD5 and SHA-1 are Practically Broken
Background
There Are MANY Data Link Protocols!
Basic Goals of Data Link Protocols
Advanced Features
Point to Point Protocol (PPP)
Overview
CDMA2000 Wireless Broadband Architecture
Windows PPP Configuration
Slide 16
Frame Format
PPP Phases
LCP Negotiation Commands
LCP Example Between Two Peers
LCP Messaging
Authentication With PAP
PAP Messaging
Authentication With CHAP
CHAP Authentication Process
CHAP Messaging
Why CHAP is Reasonably Secure
IP Control Protocol (IPCP)
Example PPP Session Establishment: Phase 1: LCP
Example PPP Session Establishment: Phase 2: CHAP
Example PPP Session Establishment: Phase 3: IPCP
Ethernet
Slide 33
Slide 34
Slide 35
Frame Size Issues
Ethernet Address Format
Windows 2000 Ethernet Configuration
Type / Length Field
Examples of Ethernet: Client / Server and Broadcast
The CSMA/CD MAC: A Simple Description
The CSMA/CD MAC: A More Involved Description
Theory in Practice: Why Exponential Backoff is Good
Links
References
Author:
Mike Borella