I have a network 192.168.111.0 /24 and I am running out of Dhcp addresses. I do not want to add another Vlan even though I know that is an option. I want to change the mask to /22 255.255.252.0 to gain the addresses that way. My plan is to change the mask on the firewall LAN interface. Create a new Dhcp scope on the firewall using the new range. Dhcp devices will need to renew to get a new address. For the static devices I need to change their mask manually. My question is will I be able to connect to the static devices remotely when they have the old mask if I've made the change on the firewall already? I am trying to do this without going to the site and want to verify it will work.
Old range is 192.168.111.0 - 255
New range 192.168.108.0 - 192.168.111.255