Thanks to the built-in certificate, a server using the TLS protocol can: The built-in certificate contains the the device MAC address into the DN x.509 attribute. Setting-Up the phone for TLS The built-in certificateĮvery Snom phone (except the old 3xx series) is produced with a built-in TLS certificate on board.Įvery device certificate is issued by the Snom Certification Authority. When TLS is used a mutual authentication of the client and the server can be performed by the phone and the server. LDAP server providing the business contacts.Minibrowser applications served by an HTTPS server.HTTPS requests to an URL triggered by function keys.
SIP connections with TLS as transport protocol.Your phone acts as a TLS client in various cases: As only the server can decrypt this number with its private key, it is used as the session key to encrypt and decrypt the traffic. If the identification from the server is signed by one of these CAs, the client typically permits the connection and delivers a random number encrypted with the server's public key to the server. Now the server can authenticate or deny the request based on the client certificate. In that case the client must send a TLS certificate. Optionally the server can " ask" the client for the certificate. If the server certificate is considered trusted or if the identification from the server is signed by one of these CAs, the client typically permits the connection and delivers a random number encrypted with the server's public key to the server. Usually, the client has a list of trusted server certificates and a list of trusted certificate authorities (CA). The client may reject the connection if the identity of the server or the issuer is unknown. In a next step, the server sends a digital certificate that contains its public encryption key, the trusted certificate authority (issuer) and a signature of the certificate. One of these parameters is the supported cipher suites defining the encryption algorithms required to encrypt the traffic. Initially, when a client wants to establish a secure connection to a server, some parameters are negotiated, this phase is called the handshake procedure.
0 kommentar(er)
