Secure communications between entities

Keep communications simple and safe
Availability and troubleshooting more important than confidentiality

Communications between SOC and PEP
Dedicated network without encryption
SSH or Telnet + CLI & TFTP for configuration management
Only way to do anything on a device
SNMP for monitoring

Communications between SP and Customer
HTTPS (HTTP with SSL/TLS)
Provide authentication, integrity, confidentiality
User Login/Password authentication