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SSL Protocol Structure
SSL protocol can be divided into 2 layers: the bottom layer is SSL record protocol; the top layer includes SSL
handshake protocol, SSL change cipher spec protocol and SSL alert protocol.
SSL
handshake
protocol
SSL
change
cipher spec
protocol
SSL alert
protocol
HTTP,
FTP…
SSL record protocol
TCP
IP
SSL record protocol: mainly applied for data partition, data calculation, MAC adding, encryption and record block
transmission.
SSL handshake protocol: it is a very important part of SSL protocol, mainly used for cryptography negotiation and
authentication. A session will be established between clients and the server. Session ID, certificate of the other side,
cryptography algorithm and primary security key are included in the session.
SSL change cipher spec protocol: clients and the server inform remote devices via SSL change cipher spec protocol
and packets will adopt the newly negotiated cryptography algorithm and security key for protection and
transmission.
SSL alert protocol: mainly used for reporting alert info, and severity and description are included in messages.
SSL Setup
Click
Administration > System Security > SSL Setup
to enter interface as below:
Fields on the screen are described below:
Field
Description
SSL
Enable/disable SSL.
Summary of Contents for G3224P
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