Screened-subnet firewall
Encyclopedia
In network security
, a screened subnet firewall is a variation of the dual-homed
gateway and screened host firewall. It can be used to separate components of the firewall onto separate systems, thereby achieving greater throughput and flexibility, although at some cost to simplicity. As each component system of the screened subnet firewall needs to implement only a specific task, each system is less complex to configure.
A screened subnet firewall is often used to establish a demilitarized zone
(DMZ).
Network security
In the field of networking, the area of network security consists of the provisions and policies adopted by the network administrator to prevent and monitor unauthorized access, misuse, modification, or denial of the computer network and network-accessible resources...
, a screened subnet firewall is a variation of the dual-homed
Dual-homed
In firewall technology, dual-homed is one of the firewall architectures for implementing preventive security. It provides the first-line defense and protection technology for keeping untrusted bodies from compromising information security by violating trusted network space.A dual-homed host is a...
gateway and screened host firewall. It can be used to separate components of the firewall onto separate systems, thereby achieving greater throughput and flexibility, although at some cost to simplicity. As each component system of the screened subnet firewall needs to implement only a specific task, each system is less complex to configure.
A screened subnet firewall is often used to establish a demilitarized zone
Demilitarized zone (computing)
In computer security, a DMZ is a physical or logical subnetwork that contains and exposes an organization's external services to a larger untrusted network, usually the Internet...
(DMZ).