Sophos UTM DHCP extend range

How do you plan on having 3x 254 (usable) ip's when home license is only valid for 50?

You would need to define a different subnet mask.  Instead of /24, you'd need to use a /23 subnet mask.  That gives you usable 192.168.2.1 through 192.168.3.254.  .0 and .255 are reserved.

Change your 192.168.2.100 ip at interfaces & routing/interfaces.

Nearly every element in utm can be changed.

Jay,

I know that Home license is only for 50 ips but I believe this is for 50 active ips at any given time. Please correct me if I am wrong about it.

I want to make that change because my kids and (I also) need different kind of vms all the time and I would like to create vm and assign static IPs to it so that they can connect to it using a host name instead of IP address.

For this change to happen, do I need to create another "network" in "network definitions" and assign that newly created network to DHCP->servers page?

Default network created during installation is not editable.

Can you please guide me through it? I am not a network guy. I am a programmer and I have very little understanding of networking.

How disruptive this change is going to be? I believe I can always revert it back?

I am afraid for just one thing only. If I can't connect to Sophos web interface after this change, there is going to be a disaster and I will have to reinstall and reconfigure my server back.

Someone more knowledgeable about the licensing will need to address that.

First off, before making *any* changes, make a manual backup under management/backup & restore.  That's the first thing I do before I start implementing any changes.  Makes reverting that much easier than trying to remember which changes to undo.

You'll need to clarify what vm's have to do with having 508 different ip's available.

I have my local domain defined as local.domain.  That's defined in network services/dhcp/dhcp server for the local lan.

Each device on the lan with a static dhcp address is defined as below. Note the settings under DNS settings.  This allows reference of the device by it's hostname.

What do you mean default network created during installation not editable?

I can edit any part of the config, including the subnet, or the network address, interface, type, etc.

If you have multiple interfaces, you can define and assign an additional management interface that's accessible through the webui.

Rather than address your questions out of context, perhaps if you tell us what you're trying to accomplish it would allow a more meaningful response.

The license is for 50 IPs "seen" by the UTM over the last seven days.

If your VMs aren't communicating with the outside world or to a DMZ, those IPs won't be counted.  So, for example, if you have 192.168.2.0/23 (255.255.254.0) for your LAN, you must be sure that all VMs have the same subnet assigned.

Cheers - Bob

The license is for 50 IPs "seen" by the UTM over the last seven days.

If your VMs aren't communicating with the outside world or to a DMZ, those IPs won't be counted.  So, for example, if you have 192.168.2.0/23 (255.255.254.0) for your LAN, you must be sure that all VMs have the same subnet assigned.

Cheers - Bob