Currently I have a standard SOHO router that we connect to browse the Internet, etc. As I doing my internship in networking I would like to know whether a subnet would protect the rest of the network when I am testing other computers.
For example I would like to set up a scenario where I browse the Internet with no antivirus, anti-malware, etc. If one of the test computers I set up is infected I would like to make sure that none of the other computers that are used regularly will be infected.
Does a subnet provide such security? If not what type of setup should I consider and how should I set it up?