Content Filtering can be challenging to manage, especially when multiple people are managing the Filtering Policies at your school. Following these best practice tips will ensure your Filtering Policies work correctly and effectively.
Before creating a policy
- Check what Content Filtering criteria you can use with your school’s configuration.
- Review and edit your existing policies to ensure you don’t have multiple policies for the same or similar content. You can use the Search and Test Policy tool to quickly check whether a Filtering Policy already exists and whether it will filter a particular user.
- Check to see if any websites or search keywords are in your Object Pools as well as directly in a Filtering Policy.
Simple but effective Policies
Overly complex policies can lead to conflicts or inconsistencies across users and devices, especially when multiple staff are involved. Having simple and purposeful policies makes reviewing and troubleshooting easier.
Descriptive policy names
Give each policy a clear and concise name that reflects its purpose and target audience. We recommend using a format like: “Block/Allow - What you’re filtering - Who you’re filtering - Additional Notes (if applicable)”.
Example
“Block - YouTube - All Users” or “Allow - YouTube - All Users - Lunch time”.
What “Type” to use
Because websites and applications use multiple web addresses for their various functions, Linewize creates Signatures for specific websites and applications that contain all of the web addresses they use. Use the Signature in your policies to ensure a website or application’s functions are fully filtered.
Use the Category Search tool to check a website’s Theme, Category and Signature and whether there’s a Signature for the website. You can also request a review of a website’s category if you believe it should be different, or request a Signature for a particular website or application.
Example
Image 1: The Minecraft Signature in the Video Games Category under the Gaming Theme.
You can block the Minecraft Signature to block all web addresses related to Minecraft, or block the Video Games Category or Gaming Theme to block more websites related to Video Games or Gaming.
Policy Logic
Formatting Websites
When you enter a website’s URL into a filtering policy, omit the https://, http://, www. or / at the start or end of the URL.
Example
Use:
- example.com
- subdomain.example.com
Don’t use:
- https://example.com/
- http://example.com
- www.example.com/
- example.com/landing-page
Using Criteria
Important
If you don’t have a Linewize Filter Appliance, you can’t use networking related criteria (for example, Network, Network Range, IP Addresses and more).
You can use criteria to customise your policies (for example, Time-Based Filtering Policies), but using multiple criteria in a policy unnecessarily can cause filtering issues. When you add more than one criteria to a Filtering Policy, a user must match every criteria for the policy to apply.
Example
This policy will only apply to “student3” if they are also in the “At Risk Students” group. If you want this policy to apply to all users in the “At Risk Students” group and “student3” is in the group, you don’t need to specify the user.
Image 2: Group and User criteria selected in a filtering policy.
Managing Over-blocking
Too many filtering policies can disrupt lessons, especially when teachers can’t allow access to certain content using Classwize. Discuss with teachers and other school staff on what content needs to be blocked to find a good balance.
Filter specific users and groups
If you only need to filter content for a particular user or group:
- Use the Criteria to specify it rather than applying the policy to everyone or a general group of users.
- Ensure the group has the correct users before you create the filtering policy.
Excessive Locked Policies
Only use Locked Policies for specific cases, as they stop other filtering features from allowing or blocking content. If your school lets teachers manage filtering using Classwize rules, ensure you don’t make Locked policies for content that teachers may want to block or allow during class time.
Example
A policy that blocks pornography or violence should be locked so that teachers can’t accidentally allow it using Classwize rules.
Filtering Themes
Themes are collections of Categories, Signatures and websites that are very general and filtering them alone may not give you the outcome you want. You can use them along with other policies to ensure your users can still access relevant educational content.
Example
The Gaming theme includes the Educational Games category, and if you block the Gaming theme, you’ll also block Educational Games.
To block Gaming but allow Educational Games:
- Create a policy to block the Gaming theme.
- Create a policy to allow Educational Games.
- Move the Educational Games policy above the block Gaming policy.