Setup Pentesting lab

[NasKar]

I'm trying to follow a tutorial on learning pen testing. In there tutorial the don't use proxmox but VMware Workstation Player. They set the network adapter to NAT and put it on the 192.168.57/24 network. My home network is 192.168.5.0/24. I would like to setup kali linux on the 192.168.57.0/24 network and not let it have any access to my home network just in case.
When I try to setup a virtual network on the 57 network I get this error
View attachment 37121
Default gateway already exists on interface 'vmbr0'.
I'm running proxmox VE 7.1-7 on an extra computer connected to my home network. If you need any further info let me know. Sorry for the basic question

 

[shrdlicka]

I think you would have to set the up over the command line by editing /etc/network/interfaces

if you you don't assign the address the VMs can't be reached from the host. With bridge-ports none this bridge interface doesn't get a phisical network interface assigend.

auto vmbr4
iface vmbr4 inet static
    address 192.168.57.1/24
    bridge-ports none
    bridge-stp off
    bridge-fd 0

see also https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysadmin_network_configuration

 

[Stoiko Ivanov]

please don't double post:
https://forum.proxmox.com/threads/setup-pentesting-lab.109809/