Your computer's firewall is a network security protocol that blocks unauthorized access from a local network or the Internet. The firewall allocates "ports" to programs that require network and ...

Configuring Windows Firewall settings is one of the most fundamental security precautions. It is a built-in security feature that comes with all versions of Windows, acting as a barrier between your ...

While the firewall in OS X is meant to be straightforward and simple, the idea of which settings are preferred can be a little confusing. Topher Kessler MacFixIt Editor Topher, an avid Mac user for ...

Firewalls are devices that help keep your computer safe from threats on networks. Windows includes a program called Microsoft Firewall to maintain system security. There may be occasions when you need ...

A flaw in Windows Firewall may prevent users from seeing all the open network ports on a Windows XP or Windows Server 2003 computer. The flaw manifests itself in the way the security application ...

Many server applications and remote administration use a Remote Procedure Call dynamic port allocation. Even though dynamic, they must follow a range rule as the customers or client machines can make ...

An Application firewall is a firewall in charge of the calls of an application or service. Based on a preset configuration policy, it allows or blocks out communications from an application. If you’re ...

Just got laptop, and am trying it outside of my home LAN for the first time. Normally I am behind a NAT router. Just went to grc.com (Shield's up) to see how the XP SP2 firewall is holding up. Telnet ...