OPNsense Forum

English Forums => General Discussion => Topic started by: TrafficChaos on February 13, 2026, 03:12:35 AM

Title: Are my dhcp starting and ending IP's correct
Post by: TrafficChaos on February 13, 2026, 03:12:35 AM
Hi everyone.
I installed OPNsense and changed the IP from the default to 192.168.1.50
Is there anything else I need to change.
When I look at my DHCP LAN settings
I see the available range is from 192.168.1.1-192.168.1.254
yet the line below this shows from 192.168.1.100 to 192.168.1.199
I find this confusing and do not know how if I need to change anything
given I changed the IP I log into OPNsense on from the default to 192.168.1.50.

Can anyone explain what these IP's above relate to and if they are ok.

Thanks to anyone who can help
I will add a screen shot of what the above settings reffer to on my system.
Title: Re: Are my dhcp starting and ending IP's correct
Post by: nero355 on February 13, 2026, 02:52:56 PM
Your DHCP range is configured in the two input fields.

192.168.1.0/24 is the whole range.
192.168.1.1 to 192.168.1.254 are the useable IP addresses.
You can do whatever you want inside that range.

So your current setup is correct :)
Title: Re: Are my dhcp starting and ending IP's correct
Post by: Patrick M. Hausen on February 13, 2026, 03:16:52 PM
.100 to .199 is the range that will be handed out to dynamic clients. Make sure that:

- your OPNsense IP address is outside of that range - it is
- any other system you configure statically is outside
- any static reservation in DHCP is outside

You can obviously use addresses from .1 to .99 and from .200 to .254 for all of these as you see fit.

That's why there are two "ranges".