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27. Proxies > Types of Proxy Servers
As mentioned earlier, the term proxy server can refer to many different things. And even within the definition of proxies that are of particular interest to webbot developers, you’ll find wide diversity. This section describes some of the proxy servers available to you, as well as their advantages and disadvantages.
For a variety of reasons, which will be described later, thousands of proxy servers are available on the Internet for you to use freely. These proxies are known as open proxies. Just as with the proxy servers we discussed earlier, when you connect your webbot or browser to an open proxy, you assume that proxy’s IP address—and, by default, its physical location.
To experience an open proxy for yourself, do an Internet search on the term “open proxy.” Within the search results, you will find links to services that list hundreds, if not thousands, of open proxies. Figure 27-6 shows a representative list (from http://www.xroxy.com[77]).