Guest Vlan Configuration; Ssl Settings - D-Link DES-3528 User Manual

xStack DES-3528 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual

Guest VLAN Configuration

To view the following window click, Security > 802.1X > Guest VLAN
The following fields may be modified to enable the 802.1x Guest VLAN:
Parameter Description
VLAN Name Enter the pre-configured VLAN name to create as an 802.1x Guest VLAN.
Port List Set the port list of ports to be enabled for the 802.1x Guest VLAN using the pull down menus.
Click Apply to implement the 802.1x Guest VLAN. Once properly configured, the Guest VLAN Name and associated
ports will be listed in the lower part of the window.
NOTE: For more information and configuration examples for the 802.1X Guest VLAN
function, please refer to the Guest VLAN Configuration Example located on the D-Link
website.

SSL Settings

Secure Sockets Layer or SSL is a security feature that will provide a secure communication path between a host and
client through the use of authentication, digital signatures and encryption. These security functions are implemented
through the use of a ciphersuite, which is a security string that determines the exact cryptographic parameters,
specific encryption algorithms and key sizes to be used for an authentication session and consists of three levels:
1. Key Exchange: The first part of the cyphersuite string specifies the public key algorithm to be used. This
switch utilizes the Rivest Shamir Adleman (RSA) public key algorithm and the Digital Signature Algorithm
(DSA), specified here as the DHE DSS Diffie-Hellman (DHE) public key algorithm. This is the first
authentication process between client and host as they "exchange keys" in looking for a match and therefore
authentication to be accepted to negotiate encryptions on the following level.
2. Encryption: The second part of the ciphersuite that includes the encryption used for encrypting the messages
sent between client and host. The Switch supports two types of cryptology algorithms:
•
Stream Ciphers – There are two types of stream ciphers on the Switch, RC4 with 40-bit keys and RC4
with 128-bit keys. These keys are used to encrypt messages and need to be consistent between
client and host for optimal use.
•
CBC Block Ciphers – CBC refers to Cipher Block Chaining, which means that a portion of the
previously encrypted block of encrypted text is used in the encryption of the current block. The Switch
supports the 3DES EDE encryption code defined by the Data Encryption Standard (DES) to create
the encrypted text.
3. Hash Algorithm: This part of the ciphersuite allows the user to choose a message digest function which will
determine a Message Authentication Code. This Message Authentication Code will be encrypted with a sent
message to provide integrity and prevent against replay attacks. The Switch supports two hash algorithms,
MD5 (Message Digest 5) and SHA (Secure Hash Algorithm).
Figure 9- 28. Guest VLAN window
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