An electronic record that establishes a user’s credentials when doing business or other transactions over the internet. A digital certificate contains the user name, a serial number, expiration dates, copy of the certificate holder’s public key (used to encrypt messages and digital signatures), and the digital signature, which verifies to the recipient that the certificate is real.

The certificate may be signed by a Certification Authority (CA), or it may be self-signed as the default Tridium certificate is. A self-signed certificate allows for communication to be encrypted, but the server cannot be validated.

The initial exchange of records between a client and server that establishes the encryption keys to be used during the communication session.

A customized Workbench user interface that uses Hx technology (HTML). For more information, see “About Px target media” in the NiagaraAX User Guide.

A set of rules that facilitates information exchange within a computer system, between computers, and between the a client and server.

A commonly-used protocol for managing the security of message transmission over the internet. SSL uses encryption keys and includes a digital certificate.

The end points in the connection between a the client and server.