Network models and Attacks

Network models and Attacks

• 1.
  Network Models Namesh Sanjitha
• 2.
  Overview Why do weneed one…..?
• 3.
  OSI - OpenSystems Interconnect
• 4.
  1. Physical Layer BitStream Electrical Pulses 1. Physical Layer ● Defines the physical aspects ■ Cables ■ NICs ■
• 5.
  2. Data LinkLayer Two sub layers: 1. MAC - Media Access Control Layer i. Physical Addressing ii. Accessing Shared Medium 2. LLC - Logical Link Control Layer i. Error Control ii. Data Framing iii. Frame Sync
• 6.
  3. Network Layer ●Logical Addressing ● Host to Host Communication ● Routing
• 7.
  4. Transport Layer ●End to End Communication ● QoS ● Error Control ● Flow Control
• 8.
  5. Session Layer ●Creating, ● Managing and ● Terminating of Sessions
• 9.
  6. Presentation Layer ●Data Formating ○ Provides independence from compatibility problems ● Data Encryption
• 10.
  7. Application Layer ProvidesServices required by applications ● File Transfer ● E-mail ● Web
• 11.
  TCP/IP No need tostudy separately, we have seen it all in OSI……...
• 12.
  Attacks Let’s go withOSI, since it is more abstract
• 13.
  Physical Layer ● Eavesdropping ●Replay Attack ● DoS :)
• 14.
  Data Link Layer ●MAC Address Spoofing ● ARP Poisoning ● MAC Flooding
• 15.
  Network Layer ● Ipspoofing ● DoS ● Twin Access Point ● Ping of Death ● ICMP MITM
• 16.
  Transport Layer ● SynFlood ● Smurf
• 17.
  Session Layer ● SessionHijacking ● Phishing
• 18.
  Presentation Layer ● SSLstripping ● Malicious SSL Requests
• 19.
  Application Layer ● DNSSpoofing ● Injection Attacks ● Browser Exploitation ● Brute Force Attacks
• 20.
  Q&A
• 21.
  Thank you!