You should set URL filtering, not ACL. ACL is to block/deny LAN to LAN. For the parameters of URL filtering, source type should be the devices/SSID which you want to deny to access YouTube and...

I think you can also try different cables. Sounds a good idea. Backblast has resolved the issue by changing the patch cable.

@H7FM Any screenshots you can provide? You set gateway rules or EAP rules?

@H7FM Sorry my mistake. URL filtering is also the same. It will also take effect in turn. So just go to set the allow rule in front, and then the deny rule in second. For the deny rule, you just need...

@chiptransisto If WAN2 as a LAN port works without issue, I think the hardware is good and the issue is still on configuration. MAC Clone may still work. Try the following steps: 1. Plug a laptop...

@yeng It's impossible. You have to be able to access the internet. Authentication page is like a web page, and you can't visit a web page without internet.