how to block youtube USG FLEX 50W (USG20W-VPN) using content flitering

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I am trying to block youtube app using
USG FLEX 50W (USG20W-VPN)

using content flitering , youtube fall under streaming media and sharing I blocked them , even though I tried adding them in forbidden site list.

Still youtube app is working.

firmware version

V5.35(ABAR.0) / 2022-12-27 21:03:06

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  • PeterUK
    PeterUK Posts: 2,856  Guru Member
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    you may need to run

    debug content-filter https-domain-filter cache flush

    you may need to block from LAN to WAN UDP port 443

    you could block by FQDN address *googlevideo.com in the firewall

  • Techgate
    Techgate Posts: 5
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    hi Peter,

    thanks for your response but what is the use of contect filter if need to block via FQDN address.

    i tried udp 443 didn't worked out.

  • jasailafan
    jasailafan Posts: 193  Master Member
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    edited April 2023
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    You need to block YouTube by app patrol, but usg flex 50w doesn't have this feature. https://community.zyxel.com/en/discussion/14682/how-to-block-youtube-access-by-schedule

  • PeterUK
    PeterUK Posts: 2,856  Guru Member
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    edited April 2023
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    If your sure UDP port 443 is blocked add the following to the list content filter:

    www.googlevideo.com

    googlevideo.com

    www.youtube.com

    youtube.com

    *.googlevideo*.com

    Then you must run command because USG stores allowed sites before you added them to Forbidden

    debug content-filter https-domain-filter cache flush

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