Chapter 14 Wireless Network Security 161 Copyright Goodheart-Willcox Co., Inc. May not be reproduced or posted to a publicly accessible website. Name ________________________________________________________________ Date ________________________ Class ________________ Lab 14-4 Wireless Site Survey Performing a wireless site survey of your business is an important task that should be conducted on a scheduled basis. This is performed in order to identify wireless signals, locate access points, discover potential interferences issues or dead spots, and locate possible rogue access points. This activity uses the free version of the NetSpot software. If this program has not been installed on your machine, navigate to www.netspotapp.com, download NetSpot Free Edition, and install the software before beginning this activ- ity. Note that in order to download the file, you may need to provide a valid e-mail address. Learning Goals • Identify wireless SSIDs and transmission data. • Perform a wireless site survey. Materials • Internet access • Web browser • Wireless network adapter • Wireless network access • NetSpot Free Edition Site survey software Procedures 1. Launch NetSpot. When it opens, make sure you are on the Discover tab on the ribbon, which is likely the default option. 2. NetSpot will begin scanning the wireless signals located in range of your adapter. Create and save a screenshot of the default screen. 3. Wireless networks express signal strength with dBm, or decibels relative to a milliwatt. The dBm measurement works in negatives. This means that a measurement of -30dBm is a higher signal than -60dBm. Signal strength often gives you an idea of the proximity of the signal for example, a measurement of -30dBm is probably referencing a location relatively close to the Access Point. Click on the Signal column head to sort by signal strength. List the best and worst signals and confirm whether these measurements align to your actual proximity to these APs. _ __________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________ 4. Select your default wireless network. Choose Details at the bottom of the screen. You can view your signal strength over time in a graph or table. Click on the Tabular Data tab. A summary of entries appears on the right side of the screen. Create and save a screenshot showing these entries. 5. Return to the main menu and sort listed networks by mode. List the various modes of 802.11 from this location: _ __________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________ 6. Re-sort the list of networks by Security. What security modes were identified in this scan? _ __________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________