Uses for Host Software Firewalls
The next step up from a native OS firewall (or even an OS without a firewall) is a third-party host software firewall. These options include both open-source and commercial software firewalls for most OSs.
You can use a host software firewall in several situations. The first and most obvious use is simply to protect a client system. Keep in mind that a host software firewall provides protections for both inbound and outbound communications. A host software firewall protects the client from compromises on the network and protects the network from compromises on the client.
Use a host software firewall as an additional layer of protection on a server system. Most server operating systems do not include a host ...
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