D-Link DSA-3200 Información técnica descargar pdf (Pagina 157)

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DGS-3200 Series Layer 2 Managed Gigabit Ethernet Switch Web UI Reference Guide

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Figure 6 - 17. DHCP Offer Filtering window

The user may set the following parameters:

Parameter Description

Server IP Address

The IP address of the DHCP server to be filtered.

Client’s MAC Address

The MAC address of the DHCP client. Only multiple legal DHCP servers on the network

need to be entered in this field. If there is only one legal DHCP server on the network, no

input to this field is allowed.

Ports The port numbers of the filter DHCP server. Tick All ports to select all.

After setting the previous parameters, click

Apply

to allow your changes to be implemented. Click

Delete

to remove the specific

entry.

802.1X (Port-based and Host-based Access Control)

The IEEE 802.1X standard is a security measure for authorizing and authenticating users to gain access to various wired or

wireless devices on a specified Local Area Network by using a Client and Server based access control model. This is

accomplished by using a RADIUS server to authenticate users trying to access a network by relaying Extensible Authentication

Protocol over LAN (EAPOL) packets between the Client and the Server. The following figure represents a basic EAPOL packet:

Figure 6 - 18. EAPOL Packet

Utilizing this method, unauthorized devices are restricted from connecting to a LAN through a port to which the user is connected.

EAPOL packets are the only traffic that can be transmitted through the specific port until authorization is granted. The 802.1X

Access Control method has three roles, each of which are vital to creating and up keeping a stable and working Access Control

security method.

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D-Link DSA-3200 Información técnica Pagina 157