Instead, change router A's LAN side to something else. If you want to have two subnets, 192.168.1.0/25 and 192.168.1.128/25 then you don't want a physical network numbered 192.168.1.0/24 because that would include both blocks in the same physical network. If you want to two devices to connect to each other without a router between them, they should be on the same network. You don't subnet a network, you subnet a network block. But as you can use the whole private address space, you can also use 192.168.2.0/24 for your second subnet. You can have one subnet 192.168.1.0/25, this includes the addresses from 192.168.0.0 to 192.168.0.127, although the lowest and the highest address are not used. Regarding subnets, the only requirement is that they don't contain public addresses and that they are distinct. You can also reverse the configuration, but without additional blocking, devices in the second router have access to devices on the main router. If you want just a guest Wifi, You can also get a simple router, use the manufacturer's NAT configuration, connect your devices to the new router and the router together with the guests to the main router. You can setup iptables to allow or deny access between the networks as you like. You can connect your second router to the main router and have two subnets behind the second router. With an additional router, you can split your internal network in two, one part between the main router and the second router, the other part behind the second router. You could also see whether you can run OpenWRT on your main router, but I don' recommend that, if you misconfigure your router, you won't be able to search the internet for help. Most home routers already run a Linux system, but it is usually locked down by the vendor and less flexible. OpenWRT is a Linux system designed for routers. If you want to experiment and learn, I recommend getting a cheap router that is supported by OpenWRT. If you want two networks, there is no need for three routers, also no obvious benefit. You can generally download manuals in PDF form from a router manufacturer’s website, so you don’t actually have to dig up any old boxes or papers to get this information.A router is a device that connects two or more networks. Use the Help features built into your router’s interface or consult its manual for more information on exactly what a setting does. If you’re interested in other things you can do with your router, check out our list of useful options you may find buried in your router’s web interface.īear in mind that not every router will have every feature, and different routers have different layouts, so a setting may appear elsewhere in the interface. You could consider enabling parental controls, setting time limits to restrict Internet usage during certain hours, setting a custom DNS server, and performing a variety of other tweaks. RELATED: 10 Useful Options You Can Configure In Your Router's Web Interfaceįeel free to click around and see the features your router offers. Here you can set a new password to prevent other people from changing your custom settings. You may find this under Advanced > Password. To lock the router’s settings and prevent other people from changing them, look for a Password option. Click from page to page to change settings, but be sure to click the Apply or Save button on each page after changing any settings to apply your changes.įor example, if you want to change your Wi-Fi settings and set a custom network name, passphrase, etc., you’ll likely find these options under Wi-Fi or Wireless settings. You’re now logged into the router’s web interface, so you can access and change the router’s settings. You’ll need physical access to the router to do this. Use your router’s reset button to reset its custom password - and all other settings - to the factory default settings. If you’ve set a custom password on the router and can’t remember it, you can reset the password and gain access. RELATED: How to Access Your Router If You Forget the Password You’ll need to know your router’s model number to find this information. If you don’t know them, check your router’s manual or consult a website like, which lists the default usernames and passwords for many different routers. You’ll need to know your router’s username and password to continue.
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