If you ask for opinions as to which Firewall others like, you will probably receive a wide array of answers. I have been using the Windows Firewall for years without issue so I cannot provide a personal opinion of how third party alternatives work.
Same goes with browsers...you will receive various opinions. I prefer Firefox.
Sandboxing is a technique which creates an isolated operating/virtual environment in which applications can be run, tested or installed without permanently modifying the local drive. Sandboxes can be used for security and software development as well as for testing and debugging code. Sandboxing can also be used as a form of malware prevention as described below by virus Bulletin.
A sandbox is a small, sealed-off version of an environment offering a minimal set of services, and is used as a test area. Actions carried out within the sandbox are safely contained within the area and cannot leak out to affect more important parts of a system.
Sandboxing is used within security software to unpack compressed or encrypted files, or to analyse the behaviour of unknown items. Larger-scale sandboxing tools are available for improving the security of computing environments - for example, browser sandboxes seal web browsers off from the host system, preventing malware from damaging it.
Sandbox(ing)For more specific information about how sandboxes work, please read
A Taste of Computer Security: Sandboxing.
Sandboxie is one example of a sandboxing tool.
Getting Started: How to use Sandboxie <-
the tutorial has 6 partsavast! 6 offered several
new protection features to include the
AutoSandbox. avast! Free Antivirus 6 does not include the full Sandbox module or its enhancements.
avast! 7 extends virtualization “sandbox”. For more information about this feature, how it works and how it differs from avast! Pro and avast! Internet Security, please refer to:
Comodo Internet Security also offers
Sandboxing.