Black Box LWN600CM-1 Betriebsanweisung PDF herunterladen (Seite 134)

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Chapter 9: Common Configuration Examples

The diagram below shows the flow of traffic between client, authenticator, and private PSK server.

A wireless client forms an association with the SmartPath AP

acting as a private PSK authenticator at 1.1.1.1 using SSID-1

(open authentication). The client sends an HTTP GET

message, which the SmartPath AP intercepts and . . .

. . . responds with an HTTP redirection that points the client to

the external Web server at 10.1.1.1, as defined in the captive

web portal configuration bound to SSID-1.

The client sends its HTTP GET to the URL to which it was

redirected. The HTTP GET includes the IP address of the

external Web server, current SSID (SSID-1), client MAC

address, and the IP address on which the private PSK

authenticator hosts the captive Web portal.

The private PSK server sends the self-registration

The private PSK authenticator forwards the HTTP response

to the client.

The private PSK authenticator forwards the HTTP GET

message to the captive Web portal on the private PSK

server at 10.1.1.1.

Wireless

Client

Private PSK Authenticator

captive Web portal on wifi0.1: 1.1.1.1/24

Private PSK Server

mgt0: 10.1.1.1/24

Captive Web Portal

Self-Registration

The user completes the self-registration form and submits it

in an HTTP POST message.

The private PSK authenticator forwards the HTTP

POST message to the captive Web portal on the

private PSK server at 10.1.1.1.

The private PSK authenticator forwards the HTTP

redirection to the client.

The private PSK authenticator displays the success

page, which includes the private PSK and SSID-2.

The private PSK server sends an HTTP redirection that

points the user back to 1.1.1.1. The redirection also

includes the private PSK and next SSID (SSID-2) for

the user.

The client sends its HTTP GET to the URL at 1.1.1.1.

The HTTP GET includes the private PSK and SSID it

received from the private PSK server.

The client associates with SSID-2, entering the private PSK

when prompted. The user can now access the network.

Captive Web Portal

Success Page

with Private PSK

and SSID Name (SSID-2)

Figure 9-18. Private PSK authenticator.

NOTE: The private PSK that each user receives through the self-registration process is bound to the MAC address of the device in

use while registering. For example, a user might get a private PSK while registering with a laptop. If the user later discon-

nects his laptop and tries to connect using the same private PSK with another device, such as an Apple

iPad

for example,

the SmartPath AP would reject the connection attempt because the iPad MAC address would not match the one that the

private PSK server previously bound to the user’s key.

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