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Blocking Top Level Domains (TLD) with GAT Shield extension

There may be situations where a top-level domain (TLD) should be blocked. Within this post will cover how we blocked .io TLD using GAT Shield.

Configuring rule in GAT Shield Console

Launch GAT Shield.

GAT Shield | Blocking Top Level Domains (TLD) with GAT Shield extension 1

Navigate to Configuration →  Alert Rules

Click on + Add a rule and select Visit.

GAT Shield | Blocking Top Level Domains (TLD) with GAT Shield extension 2

A new window will be displayed, fill in the necessary details.

Within the Page URL Regex field, type the following regex:

Regex Code (verified with regex101.com)

(.*\.io)

when the TLD ends with .io use the regex above

GAT Shield | Blocking Top Level Domains (TLD) with GAT Shield extension 3

when TLD ends with .io and all nested pages use the regex below

(.*\.io)\/?.*

GAT Shield | Blocking Top Level Domains (TLD) with GAT Shield extension 4

Now, that you have pasted your regex code into the appropriate field.

Fill in other parameters and save the Alert Rule.

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Outcome

Any user who attempts to access a top-level domain with .io will be prevented and the incident will be recorded. You can view all of the incident reports within the Shield Alerts area.

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Details of the incident, a user attempting to visit a .io top-level domain.

GAT Shield | Blocking Top Level Domains (TLD) with GAT Shield extension 7

 

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