A sandbox is an isolated security environment designed to execute untrusted code or analyze potentially malicious files without risk to the host system or network. A fundamental principle of a security-focused sandbox is containment, which often involves disabling or strictly controlling network access. By configuring a virtual machine as a sandbox with no network adapter or by placing it on an isolated virtual network with no gateway, it is effectively prevented from communicating with any external endpoints on the local network or the internet. This ensures that any malware being analyzed cannot spread or communicate with its command-and-control server.

A. VDI: Virtual Desktop Infrastructure is a technology for hosting and managing user desktops on a central server; it inherently requires network connectivity for users to access their virtual desktops.

B. Private cloud: This is a cloud deployment model for a single organization. Virtual machines within a private cloud are typically networked to provide services and may have internet access.

D. Type 1 hypervisor: A Type 1 hypervisor runs directly on the host hardware to manage virtual machines. It facilitates and manages VM networking through virtual switches, but does not inherently prevent it.

1. National Institute of Standards and Technology (NIST). (2020). NIST Special Publication 800-53

Revision 5: Security and Privacy Controls for Information Systems and Organizations. In section SC-7

Boundary Protection

the concept of isolating system components is discussed

which is the principle behind sandboxing. The NIST Glossary defines a sandbox as "A restricted

controlled execution environment

" which in a security context implies network isolation. (See: NIST CSRC Glossary

"sandbox").

2. Parno

B.

& Perrig

A. (2005). Challenges in Building a Sandboxed System. Carnegie Mellon University

School of Computer Science. This paper discusses the design of sandboxed systems

where a key challenge and feature is mediating and restricting access to external resources

including the network. (See: Section 2

"Goals of a Sandbox").

3. Boneh

D.

& Mazières

D. (2022). CS 155: Computer and Network Security

Lecture 15: Sandboxing and Isolation. Stanford University. Course materials describe sandboxing as a mechanism to confine the execution of a program

with techniques including system call interposition to block or modify network access requests

thereby preventing communication. (See: Slide deck for Lecture 15

"Sandboxing and Isolation").