What is Firewall

1.

A hardware device or software program that controls the passage of traffic at a network boundary according to a predefined set of rules. Learn more in: Taxonomy of Cyber Threats to Application Security and Applicable Defenses

2.

A firewall is a network security system that allows or denies incoming and outgoing network traffic based on predetermined security rules. Learn more in: Crime Identification Using Traffic Analysis of HTTP Botnet

3.

A device or software to selectively filter packets. Learn more in: Malicious Software

4.

This is a host or router which provides a strict gateway to the Internet for a subnetwork, checking traffic and maybe dropping some network packets. Learn more in: On the Stability of Peer-to-Peer Networks in Real-World Environments

5.

A collection of systems that enforce an access control policy amount networks. Typically the firewall is located between the internal network and the outside network to block unauthorized traffic (Butcher-Powell, 2005). Learn more in: Status and Future Trends of Multimedia Interactivity on the Web

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A firewall is a system designed to prevent unauthorized access to or from a network. Firewalls can be implemented in both hardware and software, or a combination of both. There are several types of firewall techniques. These include packet filter, application gateway, circuit-level gateway, and proxy server. Learn more in: Practical Measures for Securing Government Networks

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This is a host or router, which provides a strict gateway to the Internet for a subnetwork, checking traffic and maybe dropping some network packets. Learn more in: Network-Based Intrusion Detection

8.

This is a host or router which provides a strict gateway to the Internet for a subnetwork, checking traffic and maybe dropping some network packets. Learn more in: Intrusion Detection Based on P2P Software

9.

This is a host or router which provides a strict gateway to the Internet for a subnetwork, checking traffic and maybe dropping some network packets. Learn more in: E-Collaboration Enhanced Host Security

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A hardware/software capability that limits access between networks and/or systems in accordance with a specific security policy. Learn more in: Methodology for Cyber Security Risk Mitigation in Next Generation SCADA Systems

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This is a host or router which provides a strict gateway to the Internet for a subnetwork, checking traffic and maybe dropping some network packets. Learn more in: A Novel Application of the P2P Technology for Intrusion Detection

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A set of related programs that reside on a network gateway server that protects the resources of a private network from users from other networks. Learn more in: Videoconferencing for Supervision of Graduate Students

13.

Computer, device connecting company local Network with global network (Internet). Learn more in: Employer Branding and Internet Security

14.

In network security, firewall is a system used to keep surveillance over the traffic passing through it in and out on the basis of some prior defined security protocols. It basically protects the trusted network from the untrusted one like Internet. Learn more in: Reviewing the Security Features in Contemporary Security Policies and Models for Multiple Platforms

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This is a host or router, which provides a strict gateway to the Internet for a subnetwork, checking traffic and maybe dropping some network packets. Learn more in: Peer-to-Peer Methods for Operating System Security

16.

This is a host or router that provides a strict gateway to the Internet for a subnetwork, checking traffic and maybe dropping some network packets. Learn more in: Application of the P2P Model for Adaptive Host Protection

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A firewall is a piece of hardware and/or software which functions in a networked environment to prevent some communications forbidden by the security policy, analogous to the function of firewalls in building construction. Learn more in: Peer-to-Peer (P2P) Network Security: Firewall Issues

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A device and/or software designed to protect networks of differing security levels. Learn more in: Firewalls as Continuing Solutions for Network Security

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A peace of software that is a part of the operating system or can be an external program. It serves to protect a particular computer system it is installed on, or to protect a group of machines in a local area network (LAN). Learn more in: Software in Amateur “Packet Radio” Communications and Networking

20.

A software or hardware that is designed to block the unwanted or unauthorized network traffic between computer networks or hosts. Firewalls are mostly considered as a part of IPS that constitutes the first line of defense in the provisioning of the information security services. Learn more in: Detecting Intrusions in Cyber-Physical Systems of Smart Cities: Challenges and Directions