Week 5
Cards (16)
- The OSI Reference Model is a model that describes the interaction of the seven layers of the TCP/IP protocol stack.
- Layer 7 of the OSI model is the application layer. Basic function is user interface.
- Layer 5 of the OSI model is the session layer. Basic function is process-to-process communication.
- Layer 6 of the OSI model is the presentation layer. Basic function is data format and encryption.
- Layer 4 of the OSI model is the transport layer. Basic function is end-to-end communication maintenance.
- Layer 3 of the OSI model is the network layer. Basic function is routing data, logical addressing, and WAN delivery.
- Layer 2 of the OSI model is the data link layer. Basic function is physical addressing and LAN delivery.
- Layer 1 of the OSI model is the physical layer. Basic function is signaling.
- WAN connectivity options :
- cable modem
- DSL
- ISPs
- satellite
- dialup
- 3G/4G/5G
- Reconnaissance is when an attacker gathers information about a network for use in a future attack.
- Eavesdropping is when an attacker views data that is being passed between devices.
- DoS attacks deny a network's use.
- DoS attacks can be conducted through flooding a network with traffic or shutting down a single point of failure.
- Distributed DDos uses multiple compromised systems to flood the network from many different directions.
- Telephony TDoS is when an attacker attempts to prevent telephone calls from being successfully initated/received.
- A firewall controls the flow of traffic by preventing unauthorized network traffic from entering or leaving a particular portion of the network.