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Where is the Telecom Optical Mode firewall set up? Port mapping, UPnP, and DMZ are configured but still cannot be connected. Check this switch first.
Port mapping, UPnP, and DMZ are all in place, but the external network still cannot connect to the NAS and camera at home. The problem is probably hidden in the optical modem firewall layer. This article explains the two paths of Huawei HS8145V5 and ZTE F7015T, how to choose the firewall level, and why you need to go back to the router for retesting after making the changes. ...
