National Security Agency (NSA) / Cybersecurity and Infrastructure Security Agency (CISA) — Selecting and Hardening Remote Access VPN Solutions

Peak InfoSec – 3.13.7 and Split Tunneling

Cybersecurity and Infrastructure Security Agency (CISA) — Guide to Securing Remote Access Software

NIST SP 800-46 Rev 2: Guide to Enterprise Telework, Remote Access, and Bring Your Own Device (BYOD) Security

SANS – Remote Access Policy

NIST SP 800-77 Rev 1: Guide to IPSec VPNs