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I found this article on URL filtering. My question is how is *.baidu.com not allowing mp3.baidu.com or news.baidu.com as well What does *. signify or equate to this scenario.   ALso is there is any need or scenario in which we would need to add  www.baidu.com *.baidu.com as rules in Custom URL category.   Any Help would be appreciated.     HOW TO ALLOW ONE URL AND BLOCK OTHER ASSOCIATED URLS 11171 Created On 02/07/19 23:48 PM - Last Updated 02/07/19 23:48 PM URL FILTERING Resolution   Overview This describes how to allow a single URL and block other associated URLs. In this example www.baidu.com will be allowed but mp3.baidu.com and news.baidu.com will be blocked.   Steps Use one of the following two configuration options. Option 1: Use URL Category Go to Objects > Custom URL Category, and create a category called "Baidu," for example. Add "*.baidu.com" to the category. Go to Objects > Custom URL Category, and create a category called "Everything," for example. Add "*" to the category. This will cover all URLs. Add a security policy that permits from any to any. Under Service/URL Category, add the category "Baidu." Add another security policy that blocks from any to any. Under Service/URL Category add the category "Everything." The first rule should permit access to *.baidu.com, while the second rule should act as a catch-all rule that blocks access to all URLs.   Option 2: Use URL filtering Go to Objects > Custom URL Category, and create a category called "Baidu" for example. Add "*.baidu.com" to the category. Go to Objects > URL Filtering, and create a url filtering profile called "Baidu-URL." Select the category "Baidu" to allow and the rest of the categories to block. This will block all URLs except www.baidu.com. Add a security policy that permits from any to any. Under Actions > Profile Setting > Profile Type <select profiles>, select the url filtering profile "Baidu-URL." Note: This rule should only permit access to *.baidu.com.   owner:  bpappas ... View more