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IT-Lexikon: Fachbegriffe aus Business-IT und Netzwerktechnik einfach erklärt


Von Servern und Netzwerktechnik über Storage-Lösungen bis hin zu Green IT – nicht jeder Begriff ist auf den ersten Blick verständlich. In unserem IT-Glossar finden Sie kompakte und leicht verständliche Erklärungen zu wichtigen Begriffen aus der Welt der Business IT Hardware und IT-Infrastruktur. Egal, ob Sie nach einer Definition suchen, technische Zusammenhänge besser verstehen möchten oder sich über aktuelle IT-Themen informieren wollen – hier erhalten Sie schnell die passenden Antworten. Nutzen Sie unser Glossar als praktische Wissensquelle und Orientierungshilfe in der vielfältigen Welt moderner IT-Technologien.

0-9
3 Beiträge in dieser Glossar Kategorie
3rd Party
4in6 | 6in4
6LoWPAN
A
21 Beiträge in dieser Glossar Kategorie
Access Control
Access Network
Accesspoint
Active Directory
Adapter
Adaptive Security Appliance (ASA)
Address Resolution Protocol (ARP)
Advanced Encryption Standard (AES)
Advanced Persistent Threat (APT)
Alternative Kühlung
Ansible
Anwendungsschicht
Anycast
Application Layer Gateway
Application Programming Interface (API)
Artificial Intelligence for IT Operations (AIOps)
Asset Management
Asynchronous Transfer Mode (ATM)
Authoritative Zone Transfer (AXFR)
Automatisierung
Autonome Systeme
B
18 Beiträge in dieser Glossar Kategorie
Backbone
Backhaul
Band Steering
Bandbreite
Basisdienste
Baum-Topologie
Bidirectional Forwarding Detection (BFD)
Bit
Bitübertragungsschicht
Blade-Server
Bluetooth Low Energy (BLE)
Border Gateway Protocol (BGP)
Botnet
Bulk
Bundesamt für Sicherheit in der Informationstechnik (BSI)
Bus-Topologie
Business Communication Manager (BCM)
Byte
C
33 Beiträge in dieser Glossar Kategorie
Captive Portal
Carrier-Grade NAT (CGNAT)
Central Processing Unit (CPU)
Certificate Management
Change Advisory Board (CAB)
Change Request (CR)
Channel Planning
CIA-Triade
Cisco Discovery Protocol (CDP)
Cisco Excess Programm
Cisco Refresh Programm
Classless Inter-Domain Routing (CIDR)
Client-Management
Client-Server-Modell
Client-Server-Technologie
Cloud Access Security Broker (CASB)
Cloud Computing
Cloud Networking
Cloud-Hosting
Cloud-Telefonie
Co-Channel Interference (CCI)
Common Gateway Interface (CGI)
Common Vulnerabilities and Exposures (CVE)
Common Vulnerability Scoring System (CVSS)
Configuration Drift
Configuration Management Database (CMDB)
Contact Center Manager (CCM)
Container Network Interface (CNI)
Continuous Integration/Delivery Code (CI/CD)
Controller
Cyberkriminalität
Cyberresilienz
Cybersicherheit
D
18 Beiträge in dieser Glossar Kategorie
Darstellungsschicht
Data Loss Prevention
Data Loss Prevention (DLP)
Datenbank-Server
Datensicherheit
DDoS-Angriff
Dedicated Internet Access (DIA)
Device Control
DHCP Snooping
DHCPv6
Digital Media Player (DMP)
Disaster Recovery
Disaster Recovery as a Service (DRaaS)
Dispersion Compensation Units (DCU)
Domain Name System (DNS)
Domain Name System Security Extensions (DNSSEC)
Dual Inline Memory Module (DIMM)
Dynamic Host Configuration Protocol (DHCP)
E
15 Beiträge in dieser Glossar Kategorie
East-West Traffic
End-of-Life (EoL)
End-of-Service (EoS)
Endpoint Detection and Response (EDR)
Endpoint Security
Enhanced Interior Gateway Routing Protocol (EIGRP)
Equal-Cost Multipath Traffic (ECMP)
EtherChannel
Ethernet
Ethernet Virtual Private Network (EVPN)
Ethernet-Anschlussdose
Ethical Hacker
Exploit
Extended Detection and Response (XDR)
Exterior Gateway Protokoll (EGP)
F
13 Beiträge in dieser Glossar Kategorie
Failback
Failover
Fast-Ethernet-Switch
Festplatte
Festplattenverschlüsselung
Fiber Distributed Data Interface (FDDI)
File Transfer Protocol (FTP)
Filesharing
Firewall
Firmware
Flash Core Module
Flash Speicher
Fragmentation
G
11 Beiträge in dieser Glossar Kategorie
Gateway
Gbyte
Geo-Redundanz
Gigabit-Ethernet-Switch
Gigahertz (GHz)
GitOps
Glasfaser
Global Area Network (GAN)
Global System for Mobile Communications (GSM)
Golden Config
Gratuitous ARP
H
12 Beiträge in dieser Glossar Kategorie
Hacker
Hard Disk Drive (HDD)
Hardware
Health Checks
Heatmap
High Performance Computing (HPC)
Host-based Intrusion Detection System (HIDS)
Hosted IP-Telefonie
Hot Standby Router Protocol (HSRP)
HP Renew Programm
Hub
Hybrid Cloud
I
26 Beiträge in dieser Glossar Kategorie
Identity and Access Management (IAM)
Identity Services Engine (ISE)
IEEE 802
IEEE 802.1aq
IEEE 802.3ae
Incremental Zone Transfer (IXFR)
InfiniBand
Information Security Management System (ISMS)
Infrastructure as a Service (IaaS)
Input/Output Operations Per Second (IOPS)
Insider-Bedrohung
Intermediate System to Intermediate System (IS-IS)
Interne Gateway Protokoll (IGP)
Internet Assigned Numbers Authority (IANA)
Internet Corporation for Assigned Names and Numbers (ICANN)
Internet Exchange Point (IXP)
Internet of Things (IoT)
Internet Protocol (IP)
Internet Protocol Security (IPsec)
Intrusion Detection System (IDS)
Intrusion Prevention System (IPS)
IP Address Management (IPAM)
IP-Adressierung
IT-Remarketing
IT-Sicherheit
IT-Supply-Chain
J
2 Beiträge in dieser Glossar Kategorie
Jitter
Jumbo Frames
K
3 Beiträge in dieser Glossar Kategorie
Kommunikationsschicht
Konferenzsystem
Kubernetes
L
14 Beiträge in dieser Glossar Kategorie
Layer
Layer-2-Switch
Layer-3-Switch
Line Card
Line-Interactive USV
Linientopologie
Link Aggregation
Link Aggregation Control Protocol (LACP)
Link Layer Discovery Protocol (LLDP)
Link-local Multicast Name Resolution (LLMNR)
Load Balancer
Local Area Network (LAN)
Locally Administered Address (LAA)
Long Range Wide Area Network (LoRaWAN)
M
21 Beiträge in dieser Glossar Kategorie
Mailserver
Maintenance Window
Malware
Man-in-the-Middle-Angriff (MITM-Angriff)
Managed
Managed Service Providers (MSP)
Managed Switch
Maximum Transmission Unit (MTU)
Mean Time to Detect (MTTD)
Mean Time to Repair (MTTR)
Media Access Control (MAC)
Media Access Control Security (MACsec)
Medium Dependent Interface (MDI)
Metro Ethernet
Metropolitan Area Network (MAN)
Modul
MPLS L3VPN
Multi Cloud
Multiple Spanning Tree Protocol (MSTP)
Multiprotocol Label Switching (MPLS)
Mutual TLS (mTLS)
N
17 Beiträge in dieser Glossar Kategorie
Near-Field Communication (NFC)
Neighbor Discovery
Neighbor Discovery Protocol (NDP)
Netconf
Netflow
NetOps
Network Address Translation (NAT)
Network Attached Storage (NAS)
Network High Availability (HA)
Network Operations Center (NOC)
Network Time Protocol (NTP)
Network-based Intrusion Detection System (NIDS)
Netzwerk Monitoring & Observability
Netzwerkkabel
Netzwerkkarte
Netzwerklizenz
North-South Traffic
O
8 Beiträge in dieser Glossar Kategorie
Offline-USV
On-Premise-Lösung
Online Certificate Status Protocol (OCSP)
Online-USV
Open Shortest Path First (OSPF)
Open Source
OSI-Modell
Overlay
P
28 Beiträge in dieser Glossar Kategorie
Packet Capture
Packet Capture (PCAP)
Patch Management
Peer-to-Peer-Netzwerk (P2P)
Peering
Peripheral Component Interconnect (PCI)
Personal Area Network (PAN)
Phishing
Physical Server
Platform as a Service (PaaS)
Point-to-Point Protocol over ATM (PPPoA)
Point-to-Point Protocol over Ethernet (PPPoE)
Policy-Based Routing (PBR)
Port Address Translation (PAT)
Port Mirroring
Port Security
Portfast
Ports
Power Management Software
Power over Ethernet (PoE)
Power-Efficient Computing
Precision Time Protocol (PTP)
Private Cloud
Profiling
Proxy
Public Cloud
Public Switched Telephone Network (PSTN)
Public-Key-Infrastruktur (PKI)
Q
2 Beiträge in dieser Glossar Kategorie
Quality of Service (QoS)
Quarter Inch Cartridge (QIC)
R
24 Beiträge in dieser Glossar Kategorie
Rack-Server
Radio Access Network (RAN)
Ransomware
Rapid Spanning Tree Protocol (RSTP)
Read Access Memory (RAM)
Received Signal Strength Indicator (RSSI)
Rechenzentrum
Recursive Resolver
Redundant Array of Independent Disks (RAID)
Redundanz
Refurbished Hardware
Refurbished IT
Refurbishment
Repeater
Restconf
Ringtopologie
Rogue AP Detection
Role-Based Access Control (RBAC)
Rollback Plan
Root-Exploit
Route Summarization
Router
Routing Protocol for Low-Power and Lossy Networks (RPL)
Runbook
S
47 Beiträge in dieser Glossar Kategorie
Secrets Management
Secure Access Service Edge (SASE)
Secure Shell (SSH)
Secure Sockets Layer (SSL)
Security Information and Event Management (SIEM)
Security Operations (SecOps)
Security Orchestration, Automation, and Response (SOAR)
Serial Advanced Technology Attachement (SATA)
Server
Server-Hosting
Service Level Agreement (SLA)
Service Level Indicator (SLI)
Service Level Objective (SLO)
Service Mesh
Sicherheitslücke
Sicherungsschicht
Signal-to-Noise Ratio (SNR)
Simple Mail Transfer Protocol (SMTP)
Simple Network Management Protokoll (SNMP)
Site Reliability Engineering (SRE)
Site Survey
Skalierbarkeit
Small Form-factor Pluggable (SFP)
Smart Switch
Software as a Service (SaaS)
Software-defined Wide Area Network (SD-WAN)
Software-definiertes Netzwerk (SDN)
Softwarelizenz
Solid State Drive (SSD)
Spam
Spanning Tree
Spanning Tree Protocol (STP)
Split DNS
SQL Injection
Stateless Address Autoconfiguration (SLAAC)
Sterntopologie
Storage Area Network (SAN)
Storage Class Memory (SCM)
Storage-Router
Streaming Telemetry
Stromverteiler
Subnetting
Supernetting
Switch
Switched Port Analyzer (SPAN)
Switching Module
Syslog
T
12 Beiträge in dieser Glossar Kategorie
Telekommunikation
Terraform
Third-Party Maintenance (TPM)
Threat Intelligence
Total Cost of Ownership (TCO)
Tower-Server
Transceiver
Transit
Transmission Control Protocol / Internet Protocol (TCP/IP)
Transport Layer Security (TLS)
Transportschicht
Twisted Pair-Kabel
U
13 Beiträge in dieser Glossar Kategorie
Ultra-Wide Band (UWB)
Underlay
Unicast
Unified Networking
Unique Local Addresses (ULA)
Unmanaged
Unmanaged Switch
Unterbrechungsfreie Stromversorgung (USV)
Unterspannung
User Datagram Protocol (UDP)
USV-Racks
Überhitzung
Überspannung
V
14 Beiträge in dieser Glossar Kategorie
Vermaschtes Netzwerk
Vermittlungsschicht
Virtual Extensible LAN (VXLAN)
Virtual Local Area Network (VLAN)
Virtual Private LAN Service (VPLS)
Virtual Private Network (VPN)
Virtual Router Redundancy Protocol (VRRP)
Virtual Routing and Forwarding (VRF)
Virtueller Server
Virus
Voice over IP (VoIP)
VPS-Hosting
vSwitch
Vulnerability Management
W
9 Beiträge in dieser Glossar Kategorie
Web Application Control
Web Application Firewall (WAF)
Web-Server
Whaling
Wide Area Network (WAN)
Wireless Local Area Network (WLAN)
WLAN Roaming
WPA2-Enterprise
WPA3-Enterprise
X
1 Beiträge in dieser Glossar Kategorie
XFP
Y
1 Beiträge in dieser Glossar Kategorie
YANG-Modelle
Z
7 Beiträge in dieser Glossar Kategorie
Z-Wave
Zero Day Exploit
Zero Touch Provisioning (ZTP)
Zero Trust
Zero-Day-Sicherheitslücke
ZigBee
Zone Transfer