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Client DES-3526 / DES-3526DC Fast Ethernet Layer 2 Switch The Client is simply the workstation that wishes to gain access to the LAN or switch services. All workstation must be running software that is compliant with the 802.1x protocol. For users running Windows XP, that software is included within the operating system. All other users are required to attain 802.1x client software from an outside source. The Client will request access to the LAN and or Switch through EAPOL packets and, in turn will respond to requests from the Switch. Authentication Process Figure 6- 70. Client Utilizing the three components stated above, the 802.1x protocol provides a stable and secure way of authorizing and authenticating users attempting to access the network. Only EAPOL traffic is allowed to pass through the specified port before a successful authentication is made. This port is “locked” until the point when a Client with the correct username and password (and MAC address if 802.1x is enabled by MAC address) is granted access and therefore successfully “unlocks” the port. Once unlocked, normal traffic is allowed to pass through the port. The D-Link implementation of 802.1x allows network administrators to choose between two types of Access Control used on the Switch, which are: 1. Port-Based Access Control – This method requires only one user to be authenticated per port by a remote RADIUS server to allow the remaining users on the same port access to the network. 2. MAC-Based Access Control – Using this method, the Switch will automatically learn up to sixteen MAC addresses by port and set them in a list. The Switch using a remote RADIUS server before being allowed access to the Network must authenticate each MAC address. Port-Based Network Access Control The original intent behind the development of 802.1x was to leverage the characteristics of point-topoint in LANs. Any single LAN segment in such an infrastructures has no more than two devices attached to it, one of which is a Bridge Port. The Bridge Port detects events that indicate the attachment of an active device at the remote end of the link, or an active device becoming inactive. These events can be used to control the authorization state of the Port and initiate the process of authenticating the attached device if the Port is unauthorized. This is the Port-Based Network Access Control. 101
802.1X Client 802.1X Client DES-3526 / DES-3526DC Fast Ethernet Layer 2 Switch 802.1X Client Ethernet Switch 802.1X Client Network access controlled port Network access uncontrolled port 802.1X Client 102 802.1X Client 802.1X Client 802.1X Client … Figure 6- 71. Example of Typical Port-Based Configuration RADIUS Server Once the connected Client has successfully been authenticated, the Port then becomes Authorized, and all subsequent traffic on the Port is not subject to access control restriction until an event occurs that causes the Port to become Unauthorized. Hence, if the Port is actually connected to a shared media LAN segment with more than one attached device, successfully authenticating one of the attached devices effectively provides access to the LAN for all devices on the shared segment. Clearly, the security offered in this situation is open to attack. 802.1X Client
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D-Link DES-3526/DES-3526DC Managed
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Table of Contents Preface..........
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QoS................................
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Download Configuration File .......
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DES-3526 / DES-3526DC Fast Ethernet
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Introduction Gigabit Ethernet Techn
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LED Indicators DES-3526 / DES-3526D
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Installation Package Contents Befor
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Connecting The Switch DES-3526 / DE
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Password Protection DES-3526 / DES-
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MIBs DES-3526 / DES-3526DC Fast Eth
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DHCP Manual Subnet Mask Default Gat
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MAC Address Aging Time DES-3526 / D
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To configure a mirror port: DES-352
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MAC Notification Port Settings DES-
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The following parameters can be set
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Page 63 and 64: Parameter Description DES-3526 / DE
Page 65 and 66: DES-3526 / DES-3526DC Fast Ethernet
Page 71 and 72: Multicast Port Filtering Mode DES-3
Page 81 and 82: GVRP Setting DES-3526 / DES-3526DC
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Page 97 and 98: from GMT in +/- HH:MM DES-3526 / DE
Page 113: Authenticator DES-3526 / DES-3526DC
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Page 131 and 132: DHCP Agent Information Option 82 Ch
Page 143 and 144: Parameter Description DES-3526 / DE
Page 145 and 146: Local Enable Password DES-3526 / DE
Page 151 and 152: SSH Algorithm DES-3526 / DES-3526DC
Page 155 and 156: Traps DES-3526 / DES-3526DC Fast Et
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The following field can be set: Par
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UMB Cast (RX) DES-3526 / DES-3526DC
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The following fields may be set or
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Parameter Description DES-3526 / DE
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Maintenance TFTP Services Switch Hi
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Commander Switch Icon DES-3526 / DE
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Candidate Switch Icon DES-3526 / DE
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Group DES-3526 / DES-3526DC Fast Et
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Cables and Connectors DES-3526 / DE
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Glossary DES-3526 / DES-3526DC Fast
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This limited warranty provided by D
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Trademarks: D-Link is a registered
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D-Link Europe Limited Product Warra
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D-Link Europe Limited Produktgarant
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D-Link Europe a limité la garantie
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Garantía limitada del producto D-L
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D-Link Europe Termini di Garanzia d
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Technical Support You can find soft
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Technical Support You can find upda
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Asistencia Técnica D-Link Latin Am
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友冠技術支援台灣地區用
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Assistance technique Vous trouverez
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Supporto tecnico Gli ultimi aggiorn
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Pomoc techniczna Najnowsze wersje o
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Technikai Támogatás Meghajtó pro
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Teknisk Support Du finder software
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技术支持办公地址:北京市
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Registration Card (All Countries an
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