How to Change DNS Settings on a Router?
Set DNS for the whole home network while understanding WAN DNS, DHCP-advertised DNS, IPv6 and encrypted DNS.
How-To Guides
How to Change Your Router Admin Password?
Replace the password that protects the router settings page without confusing it with the Wi-Fi password.
How to Separate IoT Devices from Laptops and Phones on a Home Network?
Use guest networks, IoT SSIDs, VLANs, and firewall policy to reduce lateral access without breaking the local discovery your smart-home devices actually need.
How to Back Up Router Settings Before a Firmware Update, Reset, or Replacement?
A useful backup is more than clicking Export. Record service-critical settings in a portable form so you can recover even when a backup file cannot be restored to new firmware or hardware.
How to Choose Wi-Fi Channels Without Guessing?
Channel selection is an airtime-planning problem. Use spectrum conditions, channel width, neighboring networks, DFS behavior, and client support instead of chasing one “best channel.”
How to Test Whether Double NAT Is Causing Your Gaming, VPN, or Port-Forwarding Problem?
Two routers performing NAT can be harmless for normal browsing but troublesome for inbound connections, consoles, VPNs, and services that expect one clear edge router.
How to Change Your Router LAN Subnet Without Losing Access?
Changing from one private subnet to another can solve conflicts and improve organization, but it temporarily moves the router and every DHCP client to new addresses.
How to Reserve a Fixed IP Address with DHCP Without Creating Conflicts?
Use a DHCP reservation when you want a device to keep the same LAN address while still receiving gateway, DNS, and lease information automatically.
How to Find Which Device Is Your Router on a Complex Home Network?
Use gateway information, cabling, DHCP, traceroute, and device roles to identify the actual router when you have a modem, ISP gateway, mesh system, switches, and access points.
How to Configure Port Forwarding and Test It from Outside Your Network?
Map an inbound TCP/UDP port to the correct local device, keep that device address stable, and verify whether the public internet can reach it.