Web browser issue for a web browser

Hello,

are these devices in another network segment or in the same address range?

all the machines are in the network segement 192.168.10.10 include my machine who has access

So you try to reach a system in the 192.168.200.0 /24 network from a device in the 192.168.10.0 / 24 network?

Yes, as I wrote, I can access from my machine to the 192.168.200.100, my machine has the IP 192.168.10.9

How is the network layout?

What do you mean? I am sure, there are a rule defined on the Sophos UTM 9, but where?

I mean, how are these network connected to the UTM? Are there two ports on the UTM, each connected to one network? Or is there a switch in between, are VLANs defined and used?

At best you could give us a simple diagram of your network and the IP addresses.

Sorry, tell me easy where I can search and I can add the IP address range or one IP to having access

This is kind of "wash me, but don't make me wet", sorry.

I was asking to help you, not to disturb you. Without knowing about your config, I can't give any advice.

I know what you mean, but on the UTM 9 are defined which machines can access to the HyperV web browser, my machine is included, but I cannot find the entry