DGS-3700-12/DGS-3700-12G Series Layer 2 Gigabit Ethernet Switch User Manual
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Guest VLAN
This window is used to configure the Guest VLAN on the Switch.
To view this window, click Security > 802.1X > Guest VLAN as shown below:
Figure 5 - 29 Guest VLAN window
The following fields may be modified to enable the 802.1X Guest VLAN:
Parameter Description
VLAN Name Enter the pre-configure d 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.
Click Apply to implement the 802.1X Guest VLAN. Once properl y 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 G uest VLAN
function, please refer to the Guest VLAN Configuration Example located on the D-Link
website.
Secure Sockets Layer or SSL is a security feature that will pro vide a secure com m unication pat h between a host and
client through the use of authentication, digital signatures and encryption. These sec urity functions are im plemented
through the use of a ciphersuite, which is a secur ity string that determines the exact cryptographic parameters,
specific encryption algorithms and key sizes to be used for an authentica tion session and consists of three levels:
1. Key Exchange: The first part of the cyphersuite string specifies the public key algorithm to be us ed. This
switch utilizes the Rivest Shamir Adleman (RSA) public k ey 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 k eys” in looking for a m atch and therefor e
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 enc r ypting the m es sages
sent between client and host. The Switch supports two types of cr yptology 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 consi stent 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 Encr yption Standard (DES) to create
the encrypted text.
3. Hash Algorithm: This part of the ciphersuite allows the user to choose a message d igest function which will
determine a Message Authentication Code. This Message Authentication Code will be encrypted w ith 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).
These three parameters are uniquely assembled in four choices on th e Switch to create a three-layere d encryption
code for secure communication between the server and the host. The user may implement any one or com bination of