Lantronix EDS16PS User Manual

Secure Sockets Layer (SSL) is a protocol for managing the security of data transmission over the 

Internet. It provides encryption, authentication, and message integrity services. SSL is widely used 

for secure communication to a web server.
Certificate/Private key combinations can be obtained from an external Certificate Authority (CA) 

and downloaded into the unit.  Self-signed certificates with associated private key can be 

generated by the device server itself.
For more information regarding Certificates and how to obtain them, see 

SSL uses digital certificates for authentication and cryptography against eavesdropping and 

tampering. Sometimes only the server is authenticated, sometimes both server and client. The 

EDS can be server and/or client, depending on the application. Public key encryption systems 

exchange information and keys and set up the encrypted tunnel. 
Efficient symmetric encryption methods encrypt the data going through the tunnel after it is 

established. Hashing provides tamper detection.
Applications that can make use of SSL are Tunneling, Secure Web Server, and WLAN interface.
The EDS supports SSlv3 and its successors, TLS1.0 and TLS1.1. 

The SSL standard defines only certain combinations of certificate type, key exchange method, 

symmetric encryption, and hash method. Such a combination is called a cipher suite. Supported 

cipher suites include the following:

Whichever side is acting as server decides which cipher suite to use for a connection. It is usually 

the strongest common denominator of the cipher suite lists supported by both sides.

DSA

DHE

3DES

SHA1

RSA

RSA

128 bits AES

SHA1

RSA

RSA

Triple DES

SHA1

RSA

RSA

128 bits RC4

MD5

RSA

RSA

128 bits RC4

SHA1

RSA

1024 bits RSA

56 bits RC4

MD5

RSA

1024 bits RSA

56 bits RC4

SHA1

RSA

1024 bits RSA

40 bits RC4

MD5