If the ports display issues, look over your work up to this point. It is easy to have misconfigured a setting. If issues persist, this can be a challenge to resolve, as the problem could lie in several areas. You may begin by disabling UPNP for your services. Many providers have also reported their internet service provider (ISP) has blocked some port ranges by default, and they must call to have this fixed. If you are using an aftermarket router running off an ISP modem, it is possible that this “bridge” configuration needs further work to allow ports to be passed through properly. More complex networks with multiple routers working in tandem may suffer from a double-NAT issue, in which the provider is hiding behind two subnets, and the port traffic isn’t getting through to it.