Backup internet is often LTE, 5G, fixed wireless, cable, or another connection that does not have the same public IP behavior as your primary WAN. NeedPorts keeps your public endpoint stable even when the target machine reconnects through a different outbound path.
A failover router can move outbound traffic from your primary ISP to a backup connection, but inbound port forwarding may break immediately if the backup ISP uses CGNAT, blocks inbound ports, or assigns a different dynamic address.
Port forwarding may work when cable, fiber, or business internet is online.
The same services may disappear from the public internet when LTE/5G or another CGNAT connection takes over.
Your router, firewall, or host still needs to fail over outbound connectivity correctly. NeedPorts is not the WAN failover engine; it is the public inbound endpoint that continues to work when the host can reconnect outbound over the backup path.
NeedPorts plans start at $5/month or $30/year for 25 dedicated ports. That is enough for many remote-access, self-hosting, and backup-connection use cases, with larger plans available when you need more services exposed or more throughput.
Continue with these adjacent NeedPorts guides.