Ip Address Range for Small Business

Can anyone give me some guidance on what ip address range i should implement for a small business. They have about 20 devices plus ip phone system. They current are using 192.168.1.* which works fine but i want to deploy a pfsense firewall, and i want to setup a vpn for remote work. I want to make sure there is no problems with vpn collision with ip range from home users. I’m a novice so i haven’t had a need for alternative ip range till now. cheers

There’s three prefixes that you can use for private addresses. It’s entirely up to you how your want to implement. Try to avoid common ranges like 192.168.0.0/24 and 192.168.1.0/24, this will likely cover 90% of all of your users connecting via a VPN.

 10.0.0.0        -   10.255.255.255  (10/8 prefix)
 172.16.0.0      -   172.31.255.255  (172.16/12 prefix)
 192.168.0.0     -   192.168.255.255 (192.168/16 prefix)

I personally switched my network to using 172.16/12 prefixes as I find they’re less common and my employer makes heavy use of 10/8 prefixes.

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Thanks Davie, much appreciated

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I know you already got it sorted, but I too would suggest 172.16.x.x range. That way you can identify things nicely by doing stuff like using 172.16.1.x for all computers, 172.16.2.x for all printers in the office, 172.16.3.x for all voip phones, 172.16.4.x for all ip security cameras and the like. They are not on different subnets specifically which can make less experienced networking people have an easier time and require a less sophisticated (eg. basic consumer grade) router. You can still set up VLANs with them to segregate traffic of course, but simply being able to identify classes of devices by the starting IP address is really handy.