Final answer:
A newly set up VM typically has port 22 open for SSH access by default, enabling secure remote management. However, this may vary based on the virtualization platform and the configured security policies.
Step-by-step explanation:
When a virtual machine (VM) is first set up, the only port that is typically open by default is port 22, which is used for Secure Shell (SSH) access. This allows an administrator or user to connect securely to the VM for configuration and management purposes. However, this default may vary depending on the specific virtualization platform, the operating system used in the VM, and any predefined security policies or templates. In some circumstances, there might not be any open ports until explicitly configured by the user or the administrator.