Wi-Fi Wireless Internet and Network Availability

by Ira Wilsker
Golden Triangle PC Club
APCUG Director;
Columnist, The Examiner, Beaumont TX: Radio Show Host
From the September, 2005 issue of the I/O Port Newsletter

WEBSITES:
http://www.jiwire.com
http://intel.jiwire.com
http://www.wi-fihotspotlist.com

Recently, one of my daughters called me from a major city, and asked me where she could find some free "hotspots" or wireless "Wi-Fi" locations where she could get free broadband wireless internet access. She gave me her street address, and within moments I found several nearby locations where she could access the internet for free using the wireless "802.11b" PCMCIA card she had with her notebook computer. She told me which hotspot she selected, and I gave her the "SSID", or "Service Set Identifier", a simple code, usually a name, that identifies a local hotspot.

I recently purchased a new notebook computer for another daughter, and this computer came with an Intel Centrino chipset, which provided integral wireless internet access, where ever available, whether at home or on the road. As she travels around town, at school, or away from home, she can likely access the internet at high speeds.

I travel extensively, and always take my notebook computer with me, as I often find it necessary to check my email, find restaurants, or locate other information on the internet. Through experience, I have found that many hotels, restaurants, airports, and other locations offer wireless broadband internet access either for a fee, or for free. Now before I leave home, I check a website www.jiwire.com, or its twin sister site supported by Intel, intel.jiwire.com, to determine what wireless access is available enroute, or at my destination.

Jwire.com is one of the leading interactive directories of publicly available wireless internet locations, typically using one of the industry standard 802.11 protocols. Standardization, as well as substantial downward compatibility, has ensured that almost all computers equipped with 802.11 type wireless internet hardware can effectively communicate at broadband speeds. As I type this, Jwire is listing almost 70,000 public access wireless hotspots around the world. The Intel companion site lists almost 30,000 wireless hotspots in the U.S., and about 40,000 international wireless hotspots. According to the Intel site, the top U.S. cities for public wireless are New York City with over 550 public access locations, followed by Chicago (434 public wireless locations), San Francisco (412), and Seattle (320). Texas is well represented in the top 10 most "unwired" cities with 309 public hotspots in Houston, 250 in Austin, and 192 in Dallas. California is listed by Intel as the state with the most public access with over 5000 locations, followed by Texas with almost 2000 hotspots, Florida with about 1800, and New York with over 1600 public hotspots. It should be emphasized that these numbers are only the wireless sites that allow public access, either for free (sometimes with some strings attached) or for a fee, and does not include the millions of sites that are private wireless networks. The listing also does not include many of the hotel chains that offer free wireless access to registered guests.

Many of the free sites listed are local restaurants, some hotels, many airport terminals, RV parks, and other locations. All it takes to access these totally free and public sites is the SSID of the wireless host and appropriate hardware; the Jwire sites list the SSID's of the public sites. When the wireless access on the notebook computer is activated, the wireless networks within range can be identified, and if accessible, the SSID can be entered, and connections established. It is important that from a personal security standpoint, these public connections are not often encrypted, and can be "sniffed" or picked up by anyone with suitable equipment; sensitive information, passwords, banking, and other critical information should never be sent on an insecure public network.

In addition to the free sites, there are many thousands of publicly accessible but commercial (fee based) hotspots, often in coffee shops, restaurants, hotels, bookstores, some airport terminal areas, and other locations. These hotspots either require a subscription to a service, such as a cellular phone company or other third party, or a daily or hourly fee for access. Generally, since these pay services require some type of access code, they are slightly more secure than the free public sites, but are still usually accessible to a hacker with commonly available but illicit software. Again, it is a good practice not to type any sensitive personal information while on a publicly accessible wireless network. Some of the commercial hotspots offer "WEP", or wireless encryption protocol, which makes it more difficult for unwelcome third parties to listen in on internet communications, but the methods for cracking WEP have been widely published, and are now only considered to provide marginal security.

One warning about wireless internet access; it is illegal to access a wireless network without the consent of the owner, despite the fact that studies have indicated that about 80% of all private wireless networks, both workplace and home based, are not adequately protected, and can easily be picked up and accessed by anyone who wants access. A popular hacker method of gaining "free" broadband internet access is driving around town with a notebook computer with 802.11 hardware, and logging the wireless networks found, with those same networks often broadcasting the SSID necessary for access. This practice is called "wardriving". In major cities, marks are drawn on sidewalks and the outside walls of buildings in a similar escapade, "warchalking" where SSID's and other relevant information is written for all to see, and access. Locally, in a security demonstration, a security consultant drove around the business district of town, and logged hundreds of wireless networks, 80% of which were easily accessible, as they were not properly secured. These included such sensitive locations as banks, law offices, retail stores, medical facilities, and other choice locations for hackers to penetrate.

Use the Jwire sites to find wireless access, as I do, but be totally aware of the risk and security implications of broadcasting critical information. There are a variety of hardware and software utilities that can be utilized to harden wireless access, and some of those will be discussed in a future column.

There is no restriction against any non-profit group using this article as long as it is kept in context with proper credit given the author. The Editorial Committee of the Association of Personal Computer User Groups (APCUG), an international organization of which this group is a member, brings this article to you.



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Tulsa Computer Society 9/01/2005
Don Singleton, President