LANCOM Support Knowledgebase Document No. 1908.2711.4151.RHOO - V1.80

LANCOM R&S®Unified Firewall: Configuring the URL/Content Filter


This document describes the steps you need to take to configure the URL/Content Filter in a LANCOM R&S®Unified Firewall.

  • A configured and functional Internet connection on the Unified Firewall
  • Any web browser for access to the web interface of the Unified Firewall


1) General settings:

1.1) Open the configuration interface of the LANCOM R&S®Unified Firewall in your browser and go to the menu UTM -> URL/Content Filter -> Settings.

1.2) Enable or customize the features as required:
  • Sanitize URLs: Set a checkmark here in order for sections following a ? (used to communicate variables in PHP) to be excluded from black and white lists.
  • Force Safesearch: Set this checkmark to configure the setting SafeSearch=strict to automatically configure the search engines Google, Bing, and Yahoo to keep adult content out of search results. Users cannot change this setting.
  • Duration of override by user: If a webpage is blocked, you can override the Content Filter for a set period of time.

    Enter the duration in minutes for disabling the category profile of the Content Filter.

    Only the current category of a URL/Content Filter profile is unblocked for the given duration.

    This option is only available for custom profiles, but not with default profiles.

2) Creating and editing URL/Content Filter profiles:

2.1) Using the default profiles:

2.1.1) Go to the menu UTM -> URL/Content Filter -> URL/Content Filter and click on the “pen” icon to edit the respective profile.

2.1.2) The profile gives you a view of the categories stored in the Content Filter as well as the keywords in the Content Filter black list and white list.

    You cannot adjust the default Content Filter profiles. You can, however, add entries to the black list and white list.

2.1.3) You can add your own entries to the black list and white list. Use a separate line for each entry.
    If the
    black list and the white list are used in parallel, the white list is treated with higher priority.

    The Export function outputs the black list or white list as a text file and the Import function allows it to be imported.
    The maximum size of the text file is 1 MB.

2.2) Creating your own URL/Content Filter profile:

2.2.1) Click on the “plus” icon to create your own URL/Content Filter profile.

2.2.2) Modify the following parameters:
  • Name: Enter a descriptive name for the profile.
  • Override by user: With this option enabled, users can temporarily unblock the category if a website is blocked (also see step 1.2).
  • Content Filter: Select the categories to block.
  • URL Filter - Blacklist: Enter terms that are contained in undesirable URLs.
  • URL Filter - Whitelist: Enter terms that are contained in desired URLs.

3) Assigning the URL/Content Filter profiles to the connection from the internal network to the Internet:

3.1) On the desktop, click the network object and select the Connection Tool. Link the network object to the Internet object.

3.2) Go to the tab URL/Content Filter and select the desired profiles for the URL Filter and the Content Filter.
    With the function Block all by default enabled, all of the URL and Content Filter profiles created in the system are activated. Exceptions can only be made in the White list.

3.3) Click on the Activate button to accept the changes and enable filtering.

Catchwords: https; http; utm; firewall; content; content filter; url filter
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