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Most routers have a factory-default IP address (e.g. 192.168.1.1 for Linksys), and that IP address is used to set up your router. Is there any advantage to be gained by changing this default IP to something else? (I wonder if the VPNFilter hack didn't partially rely on the default IP by infecting any routers it could reach with that IP.)

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  • DHCP will give anyone (including the bad guys) connecting to your network the router LAN address as part of the host configuration.
    – Ron Maupin
    Commented May 29, 2018 at 20:28
  • @Ramhound, some of the other possible IP configurations are 10.0.0.0-10.255.255.255; 172.16.0.0.-172.31.255.255; and 192.168.0.0-192.168.5.100, at least according to linksys.com/us/support-article?articleNum=142466.
    – BillDOe
    Commented May 29, 2018 at 23:18

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If your WiFi is correctly setup for security (disable WPS, change the default password and enable WPA2 encryption) or you can't easily plug a computer in your network, no.

Keep note, the goal to change it is more if someday you do a VPN to another network. If you have the same network than the remote place it will bring routing problem. Changing the default IP come handy in such case.

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  • I wanted to add this (and some other tips) because with WPS on, the WPS pin can be calculated using the MAC address of the router and it will allow unauthorized people to connect to your network. Own experience.
    – CaldeiraG
    Commented May 29, 2018 at 20:52
  • @Tiago: Experience with a specific model? While the WPS PIN is easily bruteforceable, many devices do generate it randomly. Commented May 29, 2018 at 21:36
  • Doesn't WPS require the user to click an icon in the router setup and then quickly (30 seconds or so) click the WPS button on the device being connected?
    – BillDOe
    Commented May 29, 2018 at 23:26
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    @billDOe, it's a flaw in WPS 1.x... Google WPSpixie attack if you are interested if your router is vunerable. It only takes on average a couple seconds to reveal a full WPA2 PSK Commented May 30, 2018 at 3:13
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    @grawity The 2 major ISP's in Portugal until end-2017 offered outdated routers (NOS proprietary router and MEO Technicolor TG784v3 and my own router is exploited with a simple app called WPS Connect on my Android. Not sure if it's fixed in the latest routers (because I have to upgrade my contract). I tested it with my friends on their routers and most are expoitable.
    – CaldeiraG
    Commented May 30, 2018 at 11:56

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