Port forwarding
Port forwarding sends one kind of incoming connection to a single device in your house, such as a camera or a game. It does not speed up ordinary browsing, and it should not be turned on “just in case.”
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1
Give the device a stable local address
In the router’s LAN or DHCP page, reserve an address for the computer or console, for example 192.168.1.50. Forwarding to an address that changes tomorrow will silently break.
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2
Log in to the router that faces the internet
If an ISP modem and your own router are both doing NAT, forward on the outer one, or set the ISP box to bridge. Opening a port only on the inner 192.168.1.1 router does nothing if the modem never hands the traffic over.
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3
Create the rule
Find Port Forwarding, Virtual Server, or NAT. Enter the external port, the internal port, TCP or UDP as the app requires, and the device’s local IP. Save.
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4
Test from another network
Join mobile data, not your Wi-Fi, and test the public address. A test from inside the house often fails even when the rule is correct, because the router does not loop the connection back.
When forwarding cannot work
- The ISP uses CGNAT, so you do not have your own public IPv4 address. No rule on 192.168.0.1 or 10.0.0.1 can fix that. Ask the ISP for a public address, or use the app’s own relay.
- The device firewall still blocks the port. Open it on the computer as well as the router.
- You forwarded the admin port of the router itself to a PC. Pick a high port the app documents, and do not expose the router login to the internet.
Prefer the app’s official remote feature or a VPN into your home over leaving a port open all year.
Frequently asked questions
Is port forwarding the same as DMZ?
No. A forward sends one port to one device. DMZ sends every unsolicited port to one device and is much wider than most people need.
Which router do I log in to?
The one that holds the public address. If 10.0.0.1 is an Xfinity gateway and your own router is behind it, the gateway is the outer door.
Why does the test fail on my phone at home?
The phone is still on Wi-Fi, so the test never leaves the house. Turn Wi-Fi off and use mobile data.