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Polycom CMA System Operations Guide
446 Polycom, Inc.
For more information on performing each of these tasks, see the Polycom CMA
System Upgrade Guide.
Manage Certificates
Certificates are a security technology that assists networked computers in
determining whether to trust each other. Each digital certificate is identified by
its public key. The collection of all public keys used in an enterprise to
determine trust is known as a Public Key Infrastructure (PKI).
To manage digital certificates, an enterprise must:
• Establish a Public Key Infrastructure using one or more Certificate
Authorities (CA). Typically, an enterprise’s IT department has a CA but
commercial CAs may be used as well.
• Configure each computer that participates in the PKI with a digital
certificate that identifies it. The certificate must be signed by one of the
CAs in the PKI
• Configure each computer that participates in the PKI to trust the PKI's
Certificate Authorities
• Ensure that the PKI is used to protect data exchange by configuring each
system to use encryption protocols such as Secure Sockets Layer (SSL)
and/or Transport Level Security (TLS).
Certificates Accepted by the Polycom CMA System
By default, to support encrypted communications and establish a minimum
level of trust, the CMA system presents a self-signed digital certificate to its
clients. This default certificate will typically not be trusted by clients. Web
browsers that connect to the CMA system user interface will display a warning
regarding the certificate.
Participation in a Public Key Infrastructure requires a CMA system to have
been configured with at least one root CA certificate, a current certificate
revocation list (CRL) from the CA, and a digital certificate signed by the CA
that identifies the CMA system.