Using Wildcards and Regular Expressions in URLs/ URL Groups for Kerio Control

Overview

Kerio Control allows using wildcards or regular expressions when creating content rules based on a URL/URL group or shared URL groups. This article shares the processes for using wildcards and regular expressions.

---

 

Wildcards

Follow these steps to use wildcards when adding URLs or URL groups:

1. Select the HTTP URL option.
2. In the Site field, write the URL. You may use substrings with wildcard characters * or ?, where an asterisk (*) stands for any number of characters while a question mark (?) represents one character.
3. Click OK.

Examples:

• www.example.com/index.html — a particular page
• www.* — all URL addresses starting with www.
• *exploit* — all URL addresses containing the exploit string
• *warez??.cz* — all URL addresses containing strings such as warezzz.cz, warez99.cz, etc.

Note: Do not select the HTTP URL by regular expression option, if you want to use only wildcards.

---

 

Regular Expressions

Follow these steps to use regular expressions when adding URLs or URL groups:

1. Select the HTTP URL by regular expression option.
2. In the Site field, write the regular expression. Kerio Control uses Perl Regular Expression Syntax. For complete specifications, go to http://www.boost.org.
3. Click OK.

Example:

Type facebook\.com.* in the Site field if you want to create a content rule for all URL addresses that contain facebook.com.