Polycom Welding System 3725-77601-001H Manual Do Utilizador

Polycom CMA System Operations Guide 

446

Polycom, Inc.

For more information on performing each of these tasks, see the Polycom CMA 

System Upgrade Guide.

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).

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.