In software quality assurance, performance testing is in general a testing practice performed to determine how a system performs in terms of responsiveness and stability under a particular workload. It can also serve to investigate, measure, validate or verify other quality attributes of the system, such as scalability, reliability and resource usage.
In computing, load balancing is the process of distributing a set of tasks over a set of resources, with the aim of making their overall processing more efficient. Load balancing can optimize the response time and avoid unevenly overloading some compute nodes while other compute nodes are left idle.
Zero-configuration networking (zeroconf) is a set of technologies that automatically creates a usable computer network based on the Internet Protocol Suite (TCP/IP) when computers or network peripherals are interconnected. It does not require manual operator intervention or special configuration servers. Without zeroconf, a network administrator must set up network services, such as Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS), or configure each computer's network settings manually.
Load testing is the process of putting demand on a structure or system and measuring its response.
In computer networking, localhost is a hostname that refers to the current computer used to access it. It is used to access the network services that are running on the host via the loopback network interface. Using the loopback interface bypasses any local network interface hardware.
Netcraft is an Internet services company based in Bath, Somerset, England. The company provides cybercrime disruption services across a range of industries.
A BNC is a piece of software that is used to relay traffic and connections in computer networks, much like a proxy. Using a BNC allows a user to hide the original source of the user's connection, providing privacy as well as the ability to route traffic through a specific location. A BNC can also be used to hide the true target to which a user connects.
Nagios Core, formerly known as Nagios, is a free and open-source computer-software application that monitors systems, networks and infrastructure. Nagios offers monitoring and alerting services for servers, switches, applications and services. It alerts users when things go wrong and alerts them a second time when the problem has been resolved.
OpenVPN is a virtual private network (VPN) system that implements techniques to create secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities. It implements both client and server applications.
As the next version of Windows NT after Windows 2000, as well as the successor to Windows Me, Windows XP introduced many new features but it also removed some others.
Network load balancing is the ability to balance traffic across two or more WAN links without using complex routing protocols like BGP.
Hiawatha is a web server available for multiple platforms. It has been developed by Hugo Leisink since 2002.
Micro Focus SiteScope is agentless monitoring software focused on monitoring the availability and performance of distributed IT infrastructures, including Servers, Network devices and services, Applications and application components, operating systems and various IT enterprise components.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. The software was created by Igor Sysoev and publicly released in 2004. Nginx is free and open-source software, released under the terms of the 2-clause BSD license. A large fraction of web servers use Nginx, often as a load balancer.
In computing, Microsoft's Windows Vista and Windows Server 2008 introduced in 2007/2008 a new networking stack named Next Generation TCP/IP stack, to improve on the previous stack in several ways. The stack includes native implementation of IPv6, as well as a complete overhaul of IPv4. The new TCP/IP stack uses a new method to store configuration settings that enables more dynamic control and does not require a computer restart after a change in settings. The new stack, implemented as a dual-stack model, depends on a strong host-model and features an infrastructure to enable more modular components that one can dynamically insert and remove.
The following tables compare general and technical information for a number of notable network monitoring systems. Please see the individual products' articles for further information.
Extromatica Network Monitor is a network monitoring application created and maintained by Extromatica company. It is designed to monitor network hardware, servers and network services for faults and performance degradation. It alerts users when things go wrong and again when they get better. The software supports a variety of real-time notification mechanisms, including Short Message Service (SMS).
Icinga is an open-source computer system and network monitoring application. It was originally created as a fork of the Nagios system monitoring application in 2009.
Amazon Route 53 is a scalable and highly available Domain Name System (DNS) service. Released on December 5, 2010, it is part of Amazon.com's cloud computing platform, Amazon Web Services (AWS). The name is a possible reference to U.S. Routes, and "53" is a reference to the TCP/UDP port 53, where DNS server requests are addressed. In addition to being able to route users to various AWS services, including EC2 instances, Route 53 also enables AWS customers to route users to non-AWS infrastructure and to monitor the health of their application and its endpoints. Route 53's servers are distributed throughout the world. Amazon Route 53 supports full, end-to-end DNS resolution over IPv6. Recursive DNS resolvers on IPv6 networks can use either IPv4 or IPv6 transport to send DNS queries to Amazon Route 53.
WinRM (Windows Remote Management) is Microsoft's implementation of WS-Management in Windows which allows systems to access or exchange management information across a common network. Utilizing scripting objects or the built-in command-line tool, WinRM can be used with any remote computers that may have baseboard management controllers (BMCs) to acquire data. On Windows-based computers including WinRM, certain data supplied by Windows Management Instrumentation (WMI) can also be obtained.
