Bedienungsanleitung Netgear GS752TP (Seite 263 von 275) (Englisch)

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Configuration Examples

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GS752TP, GS728TP, and GS728TPP Gigabit Smart Switches

Also the confirmed action on this flow is to send the packets with a committed rate of

10,000

Kbps and burst size of 128 KB. Packets that violate the committed rate and burst size

are dropped.

802.1x

Local area networks (LANs) are often deployed in environments that permit unauthorized

devices to be physically attached to the LAN infrastructure, or permit unauthorized users to

attempt to access the LAN through equipment already attached. In such environments, it

might be desirable to restrict access to the services offered by the LAN to those users and

devices that are permitted to use those services.

Port-based network access control makes use of the physical characteristics of LAN

infrastructures in order to provide a means of authenticating and authorizing devices

attached to a LAN port that has point-to-point connection characteristics and of preventing

access to that port in cases in which the authentication and authorization process fails. In this

context, a port is a single point of attachment to the LAN, such as ports of MAC bridges and

associations between stations or access points in IEEE 802.11 wireless LANs.

The IEEE 802.11 standard describes an architectural framework within which authentication

and consequent actions take place. It also establishes the requirements for a protocol

between the authenticator (the system that passes an authentication request to the

authentication server) and the supplicant (the system that requests authentication), as well

as between the authenticator and the authentication server.

The switch supports a guest VLAN, which allows unauthenticated users to have limited

access to the network resources.

Note: You can use QoS features to provide rate limiting on the guest VLAN

to limit the network resources the guest VLAN provides.

Another 802.1x feature is the ability to configure a port to enable or disable EAPoL packet

forwarding support. You can disable or enable the forwarding of EAPoL when 802.1x is

disabled on the device.

The ports of an 802.1x authenticator switch provide the means to offer services to other

systems reachable through the LAN. Port-based network access control allows the operation

of a switch’s ports to be controlled in order to ensure that access to its services is permitted

only by systems that are authorized to do so.

Port access control provides a means of preventing unauthorized access by supplicants to

the services offered by a system. Control over the access to a switch and the LAN to which it

is connected can be desirable in order to restrict access to publicly accessible bridge ports or

to restrict access to departmental LANs.

Access control is achieved by enforcing authentication of supplicants that are attached to a

controlled ports of the authenticator. The result of the authentication process determines

whether the supplicant is authorized to access services on that controlled port.

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