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Diagram of a typical three-legged network model employing a DMZ using a single firewall. A single firewall with at least 3 network interfaces can be used to create a network architecture containing a DMZ.
The perimeter network, also called a border network or demilitarized zone (DMZ), is intended for hosting servers (sometimes called bastion hosts) that are accessible from or have access to both the internal and external networks. [1][2][3] The purpose of a screened subnet or DMZ is to establish a network with heightened security that is ...
Science DMZ Network Architecture The term Science DMZ refers to a computer subnetwork that is structured to be secure, but without the performance limits that would otherwise result from passing data through a stateful firewall. [1][2] The Science DMZ is designed to handle high volume data transfers, typical with scientific and high-performance computing, by creating a special DMZ to ...
Placement There are two common network configurations that include bastion hosts and their placement. The first requires two firewalls, with bastion hosts sitting between the first "outside world" firewall, and an inside firewall, [3]: 33 in a DMZ.
Unix A typical configuration is a hardened Unix (or Unix-like) machine configured with SSH and a local firewall. An administrator connects to a target machine in the DMZ by making an SSH connection from the administrator's personal computer to the jump server and then using SSH forwarding to access the target machine.
Network Enclaves consist of standalone assets that do not interact with other information systems or networks. A major difference between a DMZ or demilitarized zone and a network enclave is a DMZ allows inbound and outbound traffic access, where firewall boundaries are traversed. In an enclave, firewall boundaries are not traversed.
Air gap (networking) An air gap, air wall, air gapping[1] or disconnected network is a network security measure employed on one or more computers to ensure that a secure computer network is physically isolated from unsecured networks, such as the public Internet or an unsecured local area network. [2] It means a computer or network has no ...
Port forwarding. In computer networking, port forwarding or port mapping is an application of network address translation (NAT) that redirects a communication request from one address and port number combination to another while the packets are traversing a network gateway, such as a router or firewall. This technique is most commonly used to ...