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802.1X Configuration
Overview
802.1X is a broadband access authentication solution put forward by IEEE in June, 2001. If
defines the Port-Based Network Access Control. By utilizing LAN’s physical access features of
IEEE 802 architecture, 802.1X provides a system of methods for authenticating and
authorizing devices access to LAN ports via point-to-point.
802.1X features:
•
Terse solution. 802.1X only concerns the enabling and disabling of a port. The port is
enabled when legal users (by user name and password) access; and the port is
disabled when illegal users or no user access. The result of authentication depends on
changes of the port status. This is the simplest solution to realize the authentication
among various authentication technologies.
•
The EAP protocol used by 802.1X only defines the means of communication
authentication information, but doesn’t define a concrete authentication mechanism.
The authentication mechanism can be selected flexibly (including Smart Card, Kerberos,
Public Key Encryption and One Time Password)
•
IEEE 802.1X protocol is a layer 2 protocol, and is unnecessary to reach layer 3. In the
authentication process, the client system doesn’t need an IP address. When the
authentication begins, the EAPOL frame uses 01-80-c2-00-00-03 as the destination
MAC address, and uses the MAC address of the sender as the source MAC address.
Содержание 065-7434
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Страница 245: ...245 SIGNAMAX LLC www signamax eu Application Example Example of configuring DHCP Snooping ...
Страница 302: ...302 SIGNAMAX LLC www signamax eu Default status no switching interface ...
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Страница 655: ...287 SIGNAMAX LLC www signamax eu Sub VLAN members in the system ...