Acronyms Flashcards
AS
Autonomous System
BLE
Bluetooth Low Energy
HT
High Throughput
DHCP
Dynamic Host Configuration Protocol
- assigns IP addresses to each device on a network
- no more than 1 per broadcast domain (unless they use DHCP Relay)
- use ipconfig / ifconfig
- DHCP IP pool is called DHCP scope
AAA
Authentication, Authorization, and Accounting
- provided by RADIUS (ports 1812 - 1813) and TACAS (port 49)
DSL
Digital Subscriber Line
- 2 modes: symmetric (upload = download speeds) and asymmetric (download > upload speeds)
- DSL filter is used to clear phone line of DSL noise
- almost always uses PPoE
VPN
Virtual Private Network
- creates a secure tunnel so a remote machine or network can be part of a local network
- VPN connection protocol:
1. PPTP (Point-to-Point Tunneling Protocol)
2. L2TP (Layer 2 Tunneling Protocol)
3. SSL (Secure Sockets Layer)
MTBF
Mean Time Between Failure
MTBF = MTTR + MTTF MTTR = Mean Time to Repair MTTF = Mean Time to Failure
PPP
Point-to-Point Protocol
- layer 2 communications protocol between 2 routers directly
- can provide connection, authentication, transmission, encryption, and compression
- used by ISPs for customer dial-up access to the Internet
AUP
Acceptable Use Policy
ATP
Asynchronous Transfer Mode
FIPS
Federal Information Processing Standard
FDDI
Fiber Distributed Data Interface
ICANN
Internet Corporation for Assigned Names and Numbers
EMI
Electromagnetic Interference
DR
Designated Router
AP
Access Point
FM
Frequency Modulation
IDF
Intermediate Distribution Frame
MIMO
Multiple Input, Multiple Output
CSMA/CD
Carrier-Sense Multiple Access / Collision Detection
- used in ethernet to avoid collisions
CSMA/CA
Carrier-Sense Multiple Access / Collision Avoidance
- used for wireless (802.11) because there is no way to detect collisions in the world of wireless
HA
High Availability
- supported w/fault tolerance and redundancy
- use; raid array, redundant power supply, UPS, clustering, and failover systems and link aggregation
ICS
Industrial Control Systems
parts: machine sensors, ICS server/controller, actuator, interface
- designed for systems in close proximity that can be accessed quickly
SCADA
Supervisory Control & Data Aggregation
- a type of ICS designed for long-distance
- more autonomous to handle things before a human gets there
- have Remote Terminal Units (RTUs) [normal ICS do not have these]
SIEM
Security Information and Event Management
- aggregation (collects and stores data)
- correlation (alerts if something goes wrong and triggers for thresholds)
ex: Splunk, ELK, ArcSight
COPE
Corporate Owned Personally Enabled
- mobile deployment option
- corporate issued device that uses corp-specified apps but allows for personally installed apps and usage
EAP
Extensible Authentication Protocol
- allows for authentication flexibility (envelope) by negotiating what each system can do
- used almost exclusively for wireless networks
- similar to Kerberos
