Search results
- DictionaryFire·wall/ˈfī(ə)rˌwôl/
noun
- 1. a wall or partition designed to inhibit or prevent the spread of fire.
People also ask
What is a network firewall?
What is a firewall used for?
How does a firewall work?
What is the difference between a network firewall and a human firewall?
Firewall – meaning and definition. A firewall is a computer network security system that restricts internet traffic in to, out of, or within a private network. This software or dedicated hardware-software unit functions by selectively blocking or allowing data packets.
A firewall is a network security device that prevents unauthorized access to a network. It inspects incoming and outgoing traffic using a set of security rules to identify and block threats. A firewall can be physical hardware, digital software, software as a service or a virtual private cloud.
- Proxy-based firewalls: These are proxies* that sit in between clients and servers. Clients connect to the firewall, and the firewall inspects the outgoing packets, after which it will create a connection to the intended recipient (the web server).
- Stateful firewalls: In computer science, a "stateful" application is one that saves data from previous events and interactions. A stateful firewall saves information regarding open connections and uses this information to analyze incoming and outgoing traffic, rather than inspecting each packet.
- Next-generation firewalls (NGFW): NGFWs are firewalls that have the capabilities of traditional firewalls but also employ a host of added features to address threats on other layers of the OSI model.
- Web application firewalls (WAF): While traditional firewalls help protect private networks from malicious web applications, WAFs help protect web applications from malicious users.
Meaning of firewall in English. firewall. noun [ C ] uk / ˈfaɪə.wɔːl / us / ˈfaɪə.wɔːl / Add to word list. a device or program that stops people from seeing or using information on a computer without permission while it is connected to the internet. SMART Vocabulary: related words and phrases. Internet terminology. .plc.uk. 2FA. 2SV.
Oct 24, 2021 · What Is a Firewall? A firewall is the first line of defense for your network. The basic purpose of a firewall is to keep uninvited guests from browsing your network. A firewall can be a hardware device or a software application that is usually positioned at the network's perimeter to act as the gatekeeper for all incoming and outgoing traffic.
Jun 9, 2021 · Firewalls, explained. A firewall is like a bouncer for your internet activity, creating a security barrier between your home network and unwanted intrusion from...
a computer system or program that prevents someone from seeing or using information on a computer without permission, especially someone using the internet: Without a firewall, all your files could be instantly accessible to any competent hacker from anywhere in the world. BANKING, FINANCE.
