VPN (Virtual Private Network)

A Virtual Private Network creates an authenticated and encrypted tunnel between endpoints across an untrusted network, using protocols such as IPsec, WireGuard, OpenVPN, or TLS-based SSL VPN. Operators use VPNs to connect remote sites and admin staff; consumers use them to mask source IP. Strong cipher suites, modern key exchange, and multi-factor authentication are essential for secure deployment.

Categories: Security ControlsProtocols and StandardsOperations and Business

VPN in context

Security controls in telecom span signaling firewalls (SS7/Diameter/GTP screening at the network edge), transport encryption (IPsec, TLS, PRINS), identity and access on OSS/BSS, and monitoring at both the packet and log level. Controls are audited against GSMA FS.11/FS.19/FS.20/FS.36 and, in Europe, NIS2 sectoral rules.

Telecom security is written into standards from 3GPP, GSMA, ETSI, IETF and ITU-T. Understanding which body owns which specification, and how the specs interlock (for example 3GPP TS 33.501 with GSMA FS.34 for 5G SBA security), is essential for both design and audit work.

To place VPN in the wider telecom-security picture, review SSH, AES-GCM, Cipher Downgrade Attack, IP, Packet and EAP-AKA′.

Related terms

Related topic hubs

  • SEPP Security N32-c/N32-f, PRINS, JWE and OAuth 2.0 at the 5G roaming edge.

More from the TelcoSec Glossary

Browse the full TelcoSec Glossary, the Ultimate Guide to Mobile Network Security, or the P1 Arsenal of telecom-security tools.