The document discusses network security and computer viruses. It defines network security and lists common types of computer viruses such as macro viruses, worms, and Trojan horses. It provides preventive actions against viruses like using antivirus software and security patches. Examples of antivirus software are also given along with their criteria. The document also defines disaster recovery plans and lists common network security threats such as malicious threats from spoofing, scanning and eavesdropping.

1. BCIS Degree Course Communication Systems Management Session Three Network Security U Nyein Oo Senior Lecturer

2. Topics to be presented Part One Importance of Security Preventing Disruption Correcting Disruption Disaster Recovery Plan

3. Network Security Protection of networks and their services from unauthorized modification, destruction, or disclosure, and provision of assurance that the network performs its critical functions correctly and there are no harmful side-effects. Network security includes providing for data integrity.

4. Computer Virus a program that can 'infect' other programs by modifying them to include a possibly evolved copy of itself.” “ a virus can spread throughout a computer system or network using the authorizations of every user using it to infect their programs”.

5. Different types of Computer Virus Macro virus Worm Trojan horse Hybrids Malware Spam Spyware

6. Preventive Action to Virus Don't use file and print sharing unless you must If you do use file sharing, use good passwords Don't allow Windows to open .VBS(vb script) or .WSF(Windows Script) files Beware software of unknown origin Forged E-mail Addresses Use Anti-virus Software To get More Help To Find Security Patches

7. Anti-Virus Software Nortan Antivirus ( www.symantec.com ) Mcafee Antivirus ( www.macfee.com ) Bitdeffender ( www.bitdeffender.com ) F-Secure ( www.f-secrure.com ) PC-cillin ( www.trendmicro.com ) E-safe…etc

9. criteria of anti-virus software. Ease of Use Effective at Identifying Viruses and Worms Effective at Cleaning or Isolating Infected Files Activity Reporting Feature Set (Scanning Capabilities) Ease of Installation and Setup Help Documentation

10. DRP A disaster recovery plan (DRP) - sometimes referred to as a business continuity plan (BCP) or business process contingency plan (BPCP) - describes how an organization is to deal with potential disasters. Disaster recovery is becoming an increasingly important aspect of enterprise computing. As devices, systems, and networks become ever more complex, there are simply more things that can go wrong

11. DRP Planning Program Description Planning Scope and Plan Objectives Project Organization and Staffing Project Control Schedule of Deliverables Resource Requirements

12. Program Description Pre-Planning Activities (Project Initiation) Vulnerability Assessment and General Definition Requirements Business Impact Analysis Detailed Definition of Requirements Plan Development Testing Program Maintenance Program Initial Plan Testing and Plan Implementation

13. Sample DRP

15. Common Network Security Threats Malicious Threats Unintentional Threats Physical Threats

16. Malicious Threats Software Spoofing Scanning Eavesdropping(spying) Spamming Tunneling

17. Unintentional Threats Maltfunction Human Errors

18. Physical Threats Fire Water Earthquake Power Loss Civil Disorder Battle Damage