how to block specific url / website on NSF 3400

johnlj Lv1Posted 2026-Jun-18 16:46

good day everyone.

i have requirement to block specific url / wesbsites on NSF 3400 does anyone what a idea to share with?

any shared information will be appreciated thank you.

-John

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Based on your requirement to block specific URLs or websites on the Sangfor NGFW 3400, you can use the URL Filter feature. This is configured through a Content Security policy for internet access scenarios.

Here are the configuration steps, using standard version NGFW 7.4 and above as an example:

Step 1: Customize a URL Category
Navigate to Objects → Content Identification Database → URL Category and create a custom URL group containing the specific websites you want to block.

Step 2: Create a Content Security Template
Navigate to Objects → Security Policy Template → Content Security and create a new template. In this template, configure the URL Filter to call the custom URL category you created in Step 1.

Step 3: Apply the Policy
Navigate to Policies → Network Security → Policies and add a Policy for Internet Access Scenario. Under Basic Protection → Content Security, select the template you created in Step 2, set the action to deny, and click Save.

Important Notes:
- If you need to block HTTPS websites, you must check the HTTPS option in the Advanced settings of the URL Filter within the Content Security template.
- The URL Filter feature is used to block or allow web URLs that meet specific criteria.
Is this answer helpful?
Prosi Lv4Posted 2026-Jun-22 12:33
  
Hi,
On the Sangfor NSF 3400, the way to block a website or URL is to use a URL filter in the Content Security Template and then apply it to the Network Security Policy. Use custom URL rules/URL databases in conjunction with the Content Security policy to block or allow websites.

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