MD703 Class 10 Agenda

1
MD703 Class 10 Agenda

• Chapter 3 Strategic Use of InfoTech
• Chapter 8 Operations
• Tech Talk Groupware Messaging
• Part 2 Case Information Security

2
Chapter 3 Review

• British Railways Example
• Value from business process change
• GE Power systems Case
• Company-smart, rapid app dev
• Rapid Application Design
• Cisco Case, Dell Case
• Supply chain mgmt
• Commoditizing IT
• Impact on strategy

3
Chapter 8 Review

• Operations Issues sustainable advantage
• Outsourcing
• Transaction Costing
• Information Security

4
Discussion Questions

• Which aspects of IT/IS are of strategic concern
  and which are not?
• What IT/IS factors weight a decision toward
  outsourcing? Is it commodity-status only?

5
Groupware Messaging

• Email
• (Web) Shared Files
• Messaging
• IM

6
Email Basics

• SMTP
• Sendmail program
• IMAP
• Assumes internet access
• POP
• Predated internet
• Roaming
• Store and retrieve preferences

7
Email Architecture

• Servers
• Manage mailboxes
• Virus/spam filtering
• Send/receive mail to mailboxes
• Clients
• Retrieve from mailbox
• Send via server

8
E-mail Mechanics
Internet
SMTP
Receive
Deliver
Directory (Client Prefs)
IMAPPOP
User
MailBoxes
9
E-mail Directory Services
Internet
SMTP
Deliver
Receive
MailBoxes
IMAP/POP
User
LDAP DB
Access Preferences
10
(Web) File/Document Sharing

• Architecture
• Access Control
• Versioning
• Clients
• Notifications
• Demonstration of MyFiles

11
Instant Messaging

• Clients use IP channels to send messages
• Chat room is essentially a port
• Buddy list has firewall aspects
• block/allow lists
• Packets are delivered directly to the client
• No Email service between users
• AOL or MS act as registries
• Track which IDs are on which servers
• ISPs can monitor/log activity
• Discussion Question Business Usage?

12
Messaging (1)

• Definition
• Email for computers
• Delivery of structured data to a process via a
  queuing mechanism
• Architecture
• Queues
• Request/Response pairs
• Manager
• Clients

13
Messaging (2)

• Strengths
• Asynchronous communication
• Controls multi-server processes
• Parallel processing
• Reliability
• Once and only once delivery option
• Publish and Subscribe delivery
• Websphere MQ is most common
• Evolved from mainframe MQSeries
• JMS (java messaging service) defines the
  standards for open systems

14
Messaging
Message Queueing Server
Queue Rules Q1 Q2ssin Q2tsout
Q2
Q1
Q2
Q3
Q4
Source Server
Target Server


15
Part 2 Case Information Security

• Outsourcing network security management?
  
• Yes/No?
• Why/Why not?
• When/When not?
• Castles and Gates where do we defend?

16
Information Security Case Discussion

• Why is the Domain Name Server outside of the
  Firewall? (ref pg 358)
• Open Source or Proprietary systems for Security?
  Select and defend.