A firewall provides an essential security blanket for your computer network.

防火墙为计算机网络提供了基本安全保障。

《牛津词典》

You may need to reconfigure the firewall if you add a new machine to your network.

如果在网络中增加新计算机，可能就得重新设定防火墙。

《牛津词典》

Nice idea, but in this day of sophisticated attacks you can be sure that hackers are already inside the network behind the firewall.

FORBES: Vulnerability Intelligence Versus Vulnerability Management

Based on the WebDAV standard, Bussmann says the goals are to make it as easy to use as iCloud or DropBox for both mobile devices and laptops (something SharePoint, what many companies use today, is poor at), while also providing the security only an internal, behind-the-firewall network can.

FORBES: Connecting marketers to the Forbes audience. What is this?

Secure Computing is a niche player in network security that offers firewall software and intrusion prevention software.

FORBES: McAfee's Slice Of The Cyber Protection Racket Can Get The Stock To $35