FISI (Fachinformatiker System Integration) > LF11bV2 Deck 4 > Flashcards

LF11bV2 Deck 4 Flashcards

Betrieb und Sicherheit vernetzter Systeme gewährleisten (51 cards)

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1
Q

Asymmetrische Verschlüsselung

A

Public Key + Private Key Paar Daten mit Public Key verschlüsselt nur Private Key entschlüsselt

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2
Q

Symmetrische Verschlüsselung

A

Ein Schlüssel für Verschlüsselung und Entschlüsselung AES 256 Bit schneller als Asymmetrie

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3
Q

Public Key Infrastructure

A

PKI CA Zertifikate Schlüsselpaare Vertrauensanker für asymmetrische Krypto

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4
Q

Certificate Authority

A

CA stellt digitale Zertifikate aus bindet Public Key an Identität

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5
Q

X.509 Zertifikat

A

Standardformat Public Key + Identität + Gültigkeitsdauer + Signatur CA

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6
Q

SSL Secure Sockets Layer

A

Veraltetes Protokoll TLS-Vorgänger nicht mehr sicher

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7
Q

TLS Transport Layer Security

A

Nachfolger SSL Verschlüsselung Authentifizierung Integrität Layer 6 OSI

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8
Q

TLS Handshake

A

ClientHello ServerHello Zertifikat-Austausch Key Agreement Session Keys

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9
Q

Perfect Forward Secrecy

A

PFS Ephemeral Keys Kompromittierung langer Session-Keys gefährdet nicht vergangene

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10
Q

Diffie-Hellman Key Exchange

A

DH Schlüsselvereinbarung über unsicheren Kanal ohne direkten Schlüsselaustausch

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11
Q

RSA Algorithmus

A

Ron Rivest Shamir Adleman Public Key Krypto Faktorisierung großer Primzahlen

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12
Q

AES Advanced Encryption Standard

A

Rijndael Algorithmus NIST-Standard Symmetrisch 128/192/256 Bit

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13
Q

SSH Secure Shell

A

Verschlüsselter Remote-Zugriff Port 22 ersetzt Telnet rsh rexec

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14
Q

SSH Key Pair

A

Public Key auf Server Private Key lokal Passphrasenschutz

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15
Q

SSH Authorized Keys

A

~/.ssh/authorized_keys Public Keys autorisierter Benutzer

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16
Q

SFTP Secure File Transfer

A

SSH File Transfer Protocol verschlüsselter Dateitransfer

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17
Q

SCP Secure Copy

A

SSH-basierter Dateikopie zwischen Hosts

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18
Q

OpenSSH

A

Open Source SSH Implementierung Standard auf Linux Servern

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19
Q

SSH Port Forwarding

A

Local Remote Dynamic Tunnel über SSH-Verbindung

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20
Q

VPN Virtual Private Network

A

Verschlüsselter Tunnel über öffentliche Netze

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21
Q

IPsec Internet Protocol Security

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A

Suite für Netzwerkverschlüsselung AH ESP IKE

22
Q

AH Authentication Header

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A

IPsec-Protokoll Integrität Authentifizierung keine Vertraulichkeit

23
Q

ESP Encapsulating Security Payload

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A

IPsec-Protokoll Verschlüsselung Integrität Authentifizierung

24
Q

IKE Internet Key Exchange

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A

IPsec-Schlüsselverhandlung Phase 1/2 Diffie-Hellman

25
IPsec Security Association
SA unidirektionale Vereinbarung SPI Keys Lifetime
26
ISAKMP Internet Security Association Key Management Protocol
IKE Phase 1 Authentifizierung SA Setup
27
PSK Pre-Shared Key
Statischer gemeinsamer Schlüssel für IPsec VPN
28
Certificate-based VPN
X.509 Zertifikate für IPsec Authentifizierung PKI
29
Site-to-Site VPN
IPsec-Tunnel zwischen zwei Gateways LAN-zu-LAN
30
Remote Access VPN
IPsec SSL VPN Client-zu-Gateway einzelne User
31
GRE Generic Routing Encapsulation
IPsec-Tunnel für nicht-IP-Protokolle Multiprotokoll
32
Dead Peer Detection
IPsec DPD Überwachung Live-Status Peer Rekeying
33
NAT Traversal
IPsec NAT-T UDP-Encapsulation hinter NAT Router
34
WireGuard
Modernes VPN-Protokoll ChaCha20 Poly1305 minimaler Codebase
35
OpenVPN
Open Source VPN SSL/TLS UDP/TCP flexibel
36
L2TP Layer 2 Tunneling Protocol
VPN-Protokoll häufig mit IPsec kombiniert
37
PPTP Point-to-Point Tunneling Protocol
Veraltetes unsicheres MS VPN-Protokoll
38
SSL VPN
Browser-basiertes VPN Portal Port 443 Clientless Access
39
DTLS Datagram TLS
UDP-basierte TLS-Version für VoIP Video
40
OCSP Online Certificate Status Protocol
Revocation Check Zertifikat Gültigkeit
41
CRL Certificate Revocation List
Offline-Liste widerrufener Zertifikate
42
HSTS HTTP Strict Transport Security
HTTPS-erzwungen MitM-Schutz
43
Certificate Pinning
App bindet expected Public Key gegen CA-Kompromittierung
44
Forward Secrecy
Ephemeral Diffie-Hellman Keys vergangene Sessions sicher
45
OCSP Stapling
Server liefert OCSP-Response Client reduziert Latency
46
HPKI Host Public Key Infrastructure
SSH CA für Server-Zertifikate
47
TOFU Trust On First Use
SSH Initial Public Key akzeptieren später prüfen
48
PGP Pretty Good Privacy
E-Mail Verschlüsselung Signatur Public Key Web of Trust
49
GPG GNU Privacy Guard
Open Source PGP Implementierung Linux Standard
50
S/MIME Secure MIME
E-Mail Verschlüsselung X.509 Zertifikate PKI
51
DKIM DomainKeys Identified Mail
DKIM-Signature E-Mail Authentifizierung SPF DMARC
FISI (Fachinformatiker System Integration)
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