Firewall

[Tina]

a device or program that stops people from seeing or using information on a computer without permission while it is connected to the internet

[Jessica]

A fireproof barrier used to prevent the spread of fire between or through buildings, structures, electrical substation transformers, or within an aircraft or vehicle.

[Tariq Zaki]

To protect with a firewall.

[GrokLuth 0]

(computing) a security system consisting of a combination of hardware and software that limits the exposure of a computer or computer network to attack from crackers; commonly used on local area networks that are connected to the internet

[Magaret]

To block with a firewall.

[Gornwexy 0]

To use maximum acceleration.

[Quadirdith 0]

(colloquial) the application of maximum thrust

[Sommer]

The software that monitors traffic in and out of a private network or a personal computer and allows or blocks such traffic depending on its perceived threat.

[Vihan Dobiriyal]

A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It serves as a barrier between a trusted internal network and untrusted external networks, such as the Internet, and blocks unauthorized access while permitting authorized communications. Firewalls can be implemented as software, hardware, or a combination of both.

[Welington Mina]

In computing, a firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic by analyzing the data packets and determining whether they should be allowed through or not, based on a rule set. A networks firewall builds a bridge between the internal network or computer it protects, upon securing that the other network is secure and trusted, usually an external network, such as the Internet, that is not assumed to be secure and trusted.
Many personal computer operating systems include software-based firewalls to protect against threats from the public Internet. Many routers that pass data between networks contain firewall components and, conversely, many firewalls can perform basic routing functions.