Hacking for Dummies (ISBN by 076455784X)

Author:076455784X)
Language: eng
Format: mobi
Tags: &NEW
Published: 2011-07-01T01:27:44+00:00

15 55784x Ch10.qxd 3/29/04 4:14 PM Page 151

Chapter 10: Wireless LANs

151

Wireless LAN Discovery

After you have an Internet connection, wireless hardware (a wireless card, at a minimum), and wireless testing software (NetStumbler or similar client management software, at a minimum), you’re ready to roll.

Checking for worldwide recognition

The first test requires only the MAC address of your AP and access to the Internet. You’re testing to see if someone has discovered your WLAN and posted information about it for the world to see. If you’re not sure what your AP’s MAC address is, you should be able to view it by using the arp -a command in DOS. You may have to ping the access point’s IP address first so the MAC address is loaded into your ARP cache. Figure 10-1 shows what this may look like.

Figure 10-1:

Finding

the MAC

address

of an AP

using arp.

After you have the AP’s MAC address, browse to the WiGLE database of WLANs (www.wigle.net) to see if your AP is listed. You have to register with the site to perform a database query, but it’s worth it. After you select the Query link and login, you see a screen similar to Figure 10-2. You can enter such AP information as geographical coordinates, but the simplest thing to do is enter your MAC address in the format shown.

If your AP is listed, that means that someone has discovered it — most likely via wardriving — and has posted the information for others to see. You need to start implementing the security countermeasures listed in this chapter as soon as possible to keep others from using this information against you! You can also check www.wifimaps.com to see if your AP is listed at another WLAN lookup site.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.