Polycom®, Inc. 932
Appendix F- Secure Communication Mode
The RealPresence Collaboration Server can be configured to work in Secure Mode or Ultra Secure Mode.
For more information see Ultra Secure Mode and Flags Specific to Maximum Security Environments - Ultra
Secure Mode .
In Secured mode the Collaboration Server and the Collaboration Server Web Client are configured to work
with SSL/TLS.
In this mode, a SSL/TLS Certificate is installed on the MCU, setting the MCU Listening Port to secured port
443.
TLS is a cryptographic protocol used to ensure secure communications on public networks. TLS uses a
Certificate purchased from a trusted third party Certificate Authority to authenticate public keys that are used
in conjunction with private keys to ensure secure communications across the network.
The Collaboration Server supports:
●TLS 1.0
●SSL 3.0 (Secure Socket Layer)
SSL 3.0 utilizes 1024-bit RSA public key encryption.
TLS certificates can be generated using the following methods: CSR, PFX and PEM; each giving different
options for Encryption Key length. The table below lists the SIP TLS Encryption Key length support for the
various system components.
SIP TLS - Encryption Key Support by System Component

Certificate Configuration and Management

All Polycom devices used in a Maximum Security Environment require security certificates.
For more details see the Ultra Secure Mode chapter, Certificate Management .
System Component Key Generation Method Key Length (bits) Key generated by
SIP Signaling CSR 2048 Collaboration
Server
PFX / PEM 1024 or 2048 User
Management CSR 2048 Collaboration
Server
LDAP