Why we are having problem connecting to all streaming media platforms?

INBK_IT
INBK_IT Posts: 7
First Comment Friend Collector
in Security

We are having problem conncting streaming media platforms. We are getting dnsft.cloud.zyxel.com errors. We cannot reach youtube, vimeo, vudu, plex, etc.

11.PNG
22.PNG
33.PNG
44.PNG

Accepted Solution

  • Zyxel_Jeff
    Zyxel_Jeff Posts: 1,206  Zyxel Employee
    100 Answers 500 Comments Friend Collector Fourth Anniversary
    Answer ✓

    We found that the root cause is related to the DNS servers' (192.170.X.X) cache. We suggest you clean the DNS servers' cache and can resolve this problem.

    We tried to nslookup youtube via Google DNS server 8.8.8.8 and can be resolved normally, but if nslookup youtube via the DNS server 192.170.X.X would be failed. Thanks.


    Untitled Image

    Don't miss this great chance to upgrade your Nebula org. for free! https://bit.ly/4g2pS9L

All Replies

  • Zyxel_Jeff
    Zyxel_Jeff Posts: 1,206  Zyxel Employee
    100 Answers 500 Comments Friend Collector Fourth Anniversary

    Dear @INBK_IT

    It belongs to the Content Filter's certificate. Please check your Content Filter profile whether blocks media-related categories. If so, you can cancel it or add those media websites to the allow list. Thanks.


    Untitled Image

    Don't miss this great chance to upgrade your Nebula org. for free! https://bit.ly/4g2pS9L

  • INBK_IT
    INBK_IT Posts: 7
    First Comment Friend Collector

    Hi @Zyxel_Jeff

    We did check Content Filter profile. It says blocked by Streaming Media and Media Sharing categories, which we unchecked in both Web and DNS Content Filter. Also, we added Vimeo.com in both side trusted web sites and allow list and it is still not working. please see attached pictures for more details.

    50.PNG
    51.PNG
    52(Web content filter).PNG
    53.PNG
    54.PNG
    55(DNS content filter).PNG
    56.PNG

  • Zyxel_Jeff
    Zyxel_Jeff Posts: 1,206  Zyxel Employee
    100 Answers 500 Comments Friend Collector Fourth Anniversary
    edited October 2023

    Hi @INBK_IT

    It could be related to the cache issue, please perform below steps:

    Step1. Enter the CLI "debug content-filter https-domain-filter cache flush" to flush the Content Filter's cache.

    Step2. Clean the browser's cache and the PC's DNS cache

    Step 3: Use the browser in incognito mode to access the website to see if it's working for you.

    If the issue persists, please reboot your firewall and PC to ensure all caches are completely cleared..


    Untitled Image

    Don't miss this great chance to upgrade your Nebula org. for free! https://bit.ly/4g2pS9L

  • INBK_IT
    INBK_IT Posts: 7
    First Comment Friend Collector

    @Zyxel_Jeff

    We tried all the steps you told us and we did restarted our Zyxel USG Flex 200 and my computer.

    We still have problem.

    61- zywall dns flush.PNG
    62- firefox clear cache.PNG
    63- firefox clear cache-2.PNG
    64- computer flush dns.PNG
    65- Browser problem.PNG

  • Carlsap
    Carlsap Posts: 23  ZCNE Certified
    First Comment Sixth Anniversary ZCNE Security Level 1 Certification - 2019 ZCNE Nebula Level 1 Certification - 2019

    We have the same problem here on a flex700 device.
    Can we disable the SSL check feature?

  • INBK_IT
    INBK_IT Posts: 7
    First Comment Friend Collector

    @Carlsap

    Are you having problem with all streaming media? or are you trying for specific website?

  • INBK_IT
    INBK_IT Posts: 7
    First Comment Friend Collector

    @Zyxel_Jeff

    We still have problem. Do you have any other suggestion?

  • Zyxel_Jeff
    Zyxel_Jeff Posts: 1,206  Zyxel Employee
    100 Answers 500 Comments Friend Collector Fourth Anniversary

    Dear @INBK_IT

    Could you provide a remote Web-GUI link to us for further checking purposes? I will send a private to you later, please check your inbox. Thanks.


    Untitled Image

    Don't miss this great chance to upgrade your Nebula org. for free! https://bit.ly/4g2pS9L

  • Zyxel_Jeff
    Zyxel_Jeff Posts: 1,206  Zyxel Employee
    100 Answers 500 Comments Friend Collector Fourth Anniversary
    Answer ✓

    We found that the root cause is related to the DNS servers' (192.170.X.X) cache. We suggest you clean the DNS servers' cache and can resolve this problem.

    We tried to nslookup youtube via Google DNS server 8.8.8.8 and can be resolved normally, but if nslookup youtube via the DNS server 192.170.X.X would be failed. Thanks.


    Untitled Image

    Don't miss this great chance to upgrade your Nebula org. for free! https://bit.ly/4g2pS9L

Categories

Security Highlight


Read more

Security Help Center

EnglishTiếng ViệtРусскийไทย中文（台灣）