Internetworking Abbrev

Service Delivery Model

Software Defined Networking

Network Load Balancing

Media Access Control Address is a unique identifier assigned to network interfaces for communications on the physical network segment.

MAC addresses are used as a network address for most IEEE 802 network technologies

Vendor specific attribute

Digital Rights Management by Microsoft

Network Access Server

also network attached storage

Applicaton Layer Gateway - one per protocol in a firewall (IP, TCP, ICMP, IPSec ....)
 

International Stadardization Organisation

Open System Interconnection

Universal Resource Locator (Web Address)

Institute of Electrical and Electronics Engineers

Gigabit Interface Converter

Small Form Pluggable (Cisco)
Small Form-factor Pluggable

umgangssprachlich auch Mini-GBIC

Electronic Industries Alliance
Telecommunications Industry Association
International Telecommunications Union

Carrier Sense Multiple Access/Collision Detection | Avoidande (WLAN)

medium idle? - yes: start transmitting
                          - no: wait
collision?
'-- yes: jam signal (minimum packet time to ensure all recivers got the collison)
  '-increment retransmission counter
   '- maximum number of transmission attempts reached? If so, abort transmission.
    '- calculate and wait random backoff period based on number of collisions
     '=> re-enter main procedure          
'=> no: Reset retransmission counters and end frame transmission.

half: deviece eihter send OR receives

full: single attached device => no collision
 => disable CSMA/CD
 => send AND receive

Latin "exempli gratia"

Time Division Multiplexing

Puls Code Modulation
'- analog voice to digital signal
'-- 8000 samples per sconds by 8 bit code => 64kbps

Voice Adapter

Application specific integrated circuit

Frequency Hopping Spread Spectrum

-> WLAN 802.11

method of transmitting radio signals by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver

Orthogonal frequency-division multiplexing

WLAN method of encoding digital data on multiple carrier frequencies.

multiple-input and multiple-output (WLAN)

multiple antennas at both the transmitter and receiver to improve communication performance

Cisco Compatible Extensions Program

--> third party WLAN Equipment Testing sponsered by Cisco

Microsoft Zero Configuration Utility

The attacker wants to gain Internet access for free. This person drives around, trying to find APs that have no security or weak security. The attacker
can use easily downloaded tools and high-gain directional antennas

The motivation for hackers is to either find information or deny services.
Interestingly, the end goal may be to compromise the hosts inside the wired network, using the wireless network as a way to access the Enterprise network without having
to go through Internet connections that have firewalls.

:The attacker captures packets in the existing wireless LAN, finding the SSID and cracking security keys (if they are used). Then the attacker can set up her own
AP, with the same settings, and get the Enterprise’s clients to use it. In turn, this can cause the individuals to enter their usernames and passwords, aiding in the next phase of the attacker’s plan.

Internet Corporation for Assigned Names and Numbers

static length subnet masking (SLSM)

variable-length subnet masking (VLSM)

Classless Inter-domain Routing

channel service unit/digital service unit

either outside the router or integrated into the router’s serial interface

RJ-48 Connector

Control And Provisioning of Wireless Access Points

Lightweight Access Point Protocol

Datagram Transport Layer Security