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- Security ServicesComprehensive security for your network security solution
- Network Security ManagerModern Security Management for today’s security landscape
- Advanced Threat Protection
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- Capture Security applianceAdvanced Threat Protection for modern threat landscape
- Access Security
- Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
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- Wireless Access PointsEasy to manage, fast and secure Wi-FI
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- Email SecurityProtect against today’s advanced email threats
- Cloud Security
- Cloud App SecurityVisibility and security for Cloud Apps
- Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
- Endpoint Security
- Capture ClientStop advanced threats and rollback the damage caused by malware
- Content Filtering ClientControl access to unwanted and unsecure web content
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Content Filtering block page not shown correctly
03/26/2020 
48 People found this article helpful
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Description
The Content Filtering block page is not showed when a website is blocked, instead an error web page is shown by the browser.
The issue happens only when reaching HTTPS Websites and occurs when HTTPS Content Filtering is enabled and DPI-SSL is not implemented.
Cause
HTTPS Content Filtering is IP based, and will not inspect the URL. While HTTP content filtering can perform redirects to enforce authentication or provide a block page, HTTPS filtered pages will be silently blocked.
Resolution
This is an expected behavior if the DPI-SSL is not enabled.
The Block page always works if the traffic is HTTP while for HTTPS traffic it works only if the DPI-SSL is enabled otherwise the browser will show an error web page.
See also:
Where can I learn more about DPI-SSL? - https://www.sonicwall.com/support/knowledge-base/?sol_id=170503997881184
Which DPI-SSL migration process is best for my environment? - https://www.sonicwall.com/support/knowledge-base/?sol_id=170505555763507
How to configure Client DPI-SSL? - https://www.sonicwall.com/en-us/support/knowledge-base/?sol_id=170505885674291
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Categories
- Firewalls > TZ Series
- Firewalls > SonicWall SuperMassive E10000 Series
- Firewalls > SonicWall SuperMassive 9000 Series
- Firewalls > SonicWall NSA Series
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