Dualog Web4Sea - Categorized Content Filtering



It is possible to restrict access to some specific category of internet sites containing sensitive or illegal content. The categorized content filtering is built around one or more policies defined for a company. Any HTTP page can be qualified for restriction.

To activate categorized content filtering there must be at least one content filtering policy created.

The categorized content filtering must be configured from the shore interface on dualog.net. This requires the user to be a member of a user group that has access to the HTTP Proxy setup configuration.

Categorized content filtering is configured from:
Main Menu > Connection Suite > Network Control > Configure Network Control > HTTP Proxy setup > Content Filter


  1. To commence, it's necessary to have at least one policy established. Click the "New" button to initiate the creation of a new policy. Please be aware that once a policy is created, it cannot be deleted.

  2. Once the policy is generated, it must be named. Keep the name concise, as it will appear in dropdown menus within the configuration. The description is optional.

  3. The "Redirect to" field specifies the destination to which users are directed if they attempt to access a restricted webpage. If left blank, it defaults to the Dualog block page. Ensure that the address provided is a valid HTTP address and begins with http://.

  4. Upon entering the name, click "Save," and then proceed to click "Refresh Data" in the top-rightmceclip0.png


  1. After clicking “Refresh Data”, a list of categories available for content filtering becomes available. Choose the categories that should be blocked in this policy and click save.
  2. The default setting for ships with HTTP Proxy enabled is to follow the company policy for content filtering. If this drop-down is used, all ships using company default will automatically be filtered using the selected policy.


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