Now, since this is not your own, private Internet connection,
you can??™t just plug in a router to facilitate your firewall. But you can
add another device, a wireless bridge, in order to build an ???island??? of sorts,
in a sea otherwise filled with peril.
A bridge connects two networks; in this case, you??™re bridging the public network
to your private, secure network, as shown in Figure 7-15. Between
them is the wireless bridge and your router (which protects your private network
with its built-in firewall). The two dotted areas represent the scope of
the two different WiFi networks in effect: your own private, encrypted wireless
network is shown on the left, and the public network is illustrated on
the right. (Your bridge and router actually form a tiny, third network, complete
with its own IP space separate from those in either of the two wireless
networks.)
* This may be reason enough to keep strangers out of your own WiFi network; see ???Set Up a Wireless
Router,??? earlier in this chapter, for help securing your network.
374 | Chapter 7: Networking and Internet
Here??™s how you set it up:
1. Use the ???Connect to a network??? window as described earlier in ???Sniff
Out WiFi Hotspots??? to find the name (SSID) of the public wireless network
to which you??™d like to connect. Connect to the network temporarily
to confirm that it actually works.
2. Obtain a wireless bridge, and follow the procedure laid out in its documentation
to set it up with the public wireless network you want to use,
a process that typically involves plugging the bridge directly into your
PC with an Ethernet cable.
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