digicert – Mitigating Risk: The Importance of Considering Your Certificate Practices

SANS Whitepaper – Building and Managing a PKI Solution

NIST SP 800-77 Guide to IPSec VPNs

Amazon Web Services – How to Protect Data in Transit

Microsoft – Azure Data Security and Encryption Best Practices

NetworkWorld – Transport Layer Security (TLS)

NIST SP 800-113 Guide to SSL VPNs