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Network seurity

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Naqash Rasheed
Naqash Rasheed

slides covers network security in appreciate manners

EducaçãoTecnologia
1 de 52
Network Security Justin Weisz [email_address]
A Brief History of the World
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What is “Security” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What is “Security” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What is “Security” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What is “Security” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Why do we need security? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Who is vulnerable? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Common security attacks and their countermeasures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Firewalls ,[object Object],[object Object],[object Object],[object Object],[object Object]
Firewalls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Firewalls Intranet DMZ Internet Firewall Firewall Web server, email server, web proxy, etc
Firewalls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Firewalls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Firewalls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Intrusion Detection ,[object Object],[object Object],[object Object]
Intrusion Detection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Minor Detour… ,[object Object],[object Object]
Dictionary Attack ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Denial of Service ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Denial of Service ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Denial of Service
Denial of Service ,[object Object],[object Object],[object Object]
Denial of Service
Denial of Service ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Denial of Service ,[object Object],[object Object],[object Object],[object Object]
Denial of Service ,[object Object],[object Object],[object Object]
Denial of Service ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP Attacks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP Attacks ,[object Object],[object Object],[object Object],[object Object],[object Object]
TCP Attacks ,[object Object],[object Object],[object Object]
TCP Attacks ,[object Object]
TCP Attacks ,[object Object]
TCP Attacks ,[object Object],[object Object]
TCP Attacks ,[object Object],Packets The Void
TCP Attacks ,[object Object],ISN, SRC=Alice
TCP Attacks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP Attacks ,[object Object],Web server Malicious user Trusting web client
TCP Attacks ,[object Object],[object Object],[object Object],[object Object]
Five Minute Break ,[object Object]
Packet Sniffing ,[object Object],[object Object],[object Object],[object Object],[object Object]
Packet Sniffing ,[object Object],[object Object]
Packet Sniffing ,[object Object],[object Object],[object Object],[object Object]
Packet Sniffing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Social Problems ,[object Object],[object Object],[object Object],[object Object]
Social Problems ,[object Object],[object Object]
Social Problems ,[object Object],[object Object],[object Object],[object Object],[object Object]
Social Problems ,[object Object],[object Object],[object Object],[object Object],[object Object]
Social Problems ,[object Object],[object Object],[object Object],[object Object],[object Object]
Conclusions ,[object Object],[object Object],[object Object],[object Object]
Security related URLs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Network seurity

Notas do Editor

  1. In other words, having systems in place beforehand which prevent attacks before they begin.
  2. Related to the first definition, having peace of mind knowing that your systems are safe and protected.
  3. This includes contingency plans for what to do when attackers strike, keeping up with the latest CERT advisories, hiring network security consultants to find insecurities in your network, etc.
  4. Why good? Because it lets you filter what comes in and what goes out. Why bad? If that point goes down, you are cut off from everyone else. Also, may have lots of congestion at that one point.
  5. Forge source IP so that the victim can’t figure out who you are.
  6. Alice can send a RESET
  7. Malicious user can send a virus to the trusting web client, instead of the program they thought they were downloading.
  8. Security techniques: IDS can be configured to look for internal inconsistencies in traffic patterns Firewalls can be configured to block off one part of a corporate network from another part to further restrict access Can also use hardware based identification tokens with strong encryption to identify who is doing what