Personal firewalls are available from numerous security vendors, and Windows XP includes its own (see Windows Firewall). For home and small business networks, a router with a built-in firewall is ...

Macworld People write in with mysteries all the time. One is why their Mac (and sometimes other devices) will seemingly ...

If you're still using Windows 98 or ME, your choice of a firewall will be somewhat more limited: While Norton Personal Firewall and PC-cillin Internet Security support the older operating systems ...

A firewall that is provided by software. It often refers to a personal firewall in a user's computer, but software firewalls may be installed in servers as well. Contrast with hardware firewall.