VPN & security glossary

A

• AES-256-GCM
• Always-On VPN
• Authenticated Encryption (AEAD)

B

• Bandwidth
• BGP (Border Gateway Protocol)
• Browser Profile Isolation

C

• Captive Portal
• Censorship Circumvention
• Certificate
• CGNAT (Carrier-Grade NAT)
• ChaCha20-Poly1305
• Cookie
• Corporate VPN Concentrator

D

• Data Retention
• DDoS (Distributed Denial of Service)
• Deep Packet Inspection (DPI)
• Device Fingerprinting
• DMCA Notice
• DNS (Domain Name System)
• DNS Leak
• DNS over HTTPS (DoH)
• DNS over TLS (DoT)

E

• ECDH (Elliptic-Curve Diffie-Hellman)
• Encryption
• Endpoint Posture

F

• Firewall
• Fragmentation
• Full-Tunnel VPN

G

• Game Server vs P2P Networking
• Geo-Blocking
• Geo-Gating (Web3)

H

• Hardware Security Key (FIDO2)
• Hotspot (Tethering)
• HTTP Proxy

I

• IKEv2/IPsec
• Independent Audit
• IP Address
• IPv6
• IPv6 Leak
• ISP (Internet Service Provider)

J

• Jitter
• Jurisdiction

K

• Key Exchange
• Kill Switch

L

• Latency (Ping)
• Leak Test
• Logging (Connection Logs)

M

• Malware
• Man-in-the-Middle (MITM)
• Metadata
• MFA (Multi-Factor Authentication)
• Mobile Roaming
• MTU (Maximum Transmission Unit)
• Multi-Hop (Double VPN)

N

• NAT (Network Address Translation)
• NAT Type (Gaming)
• No-Logs Policy

O

• Obfuscation
• Onion over VPN
• OpenVPN

P

• P2P / Torrenting
• Packet Loss
• Peering
• Perfect Forward Secrecy (PFS)
• Phishing
• Policy-Based Routing
• Port
• Port Forwarding
• Private DNS (Android)
• Proxy
• Public IP vs Private IP
• Public Wi‑Fi Security

Q

• QoS (Quality of Service)

R

• RAM-Only Servers
• Remote Desktop
• Routing

S

• SASE
• Server Distance
• Server Load
• Smart DNS
• SNI / ECH
• SOCKS5 Proxy
• Speed Test
• Split Tunneling
• Stealth VPN
• Streaming Optimization

T

• Throttling
• TLS (Transport Layer Security)
• Tor
• Tracking Pixels

U

• UDP vs TCP (for VPN)

V

• VPN (Virtual Private Network)
• VPN App Permissions
• VPN Client
• VPN Server (Exit Node)
• VPN Tunnel

W

• Warrant Canary
• WebRTC Leak
• WireGuard

Z

• ZTNA