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 ...

A firewall that blocks traffic or a failed VPN connection may prevent you from accessing the internet even when your Wi-Fi ...

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 ...

According to current expert opinions, Zone Firewall is the top firewall security software for 2025. Zone Firewall has secured ...

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.