April 2011
Intermediate to advanced
368 pages
11h 36m
English
Content preview from Secure Roaming in 802.11 Networks
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Chapter 3
3.6 Mobile IP and Its Role in 802.11 Roaming
3.6.1 Introduction
This section is devoted to Mobile IP [4]. As we described in Section 3.5, while roaming from
one SSID to another SSID, it is normal to be assigned a new address belonging to the target
subnet. This results in your application having to make a new TCP/UDP connection with
your new IP address. To the extent that your device is “known” to other network entities, by
its IP address being changed each time the device roams to a new location, this readdressing
disrupts those entities. Mobile IP attempts to address this issue. With Mobile IP, you retain
the same static IP address even
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