Instalación y configuración de servicios de infraestructura IT en Zentyal server 6.2

En este documento se muestra la instalación y configuración en VirtualBox de varios servicios de infraestructura IT en Zentyal Server 6.2 Development, destinado a formular soluciones bajo GNU/Linux. Se evidencia paso a paso la instalación del servidor y las temáticas abarcadas por el estudiante, aplicando las pruebas respectivas para validar su correcto funcionamiento. Estos servicios son DHCP Server, DNS Server y Controlador de dominio; Proxy no transparente para el control de acceso de una estación GNU/Linux a Internet filtrando la salida por el puerto 1230; Cortafuegos para restringir la navegación de sitios web de entretenimiento y redes sociales y validando las restricciones solicitadas desde una estación cliente; File server y Print server para detallar el acceso de un equipo por medio del controlador de dominio LDAP a los servicios de carpetas compartidas e impresoras y finalmente, VPN para establecer un túnel privado de comunicación con un equipo cliente.In the following document, it is shown the installation and setup in VirtualBox of many IT infrastructure services in Zentyal Server 6.2 Development addressed to develop solutions in GNU/Linux. It highlights the step-by-step of the Server's installation and the covered topics by the student applying the pertinent tests in order to check its right operation. These services are DHCP Server, DNS Server and Domain Controller; Non-transparent Proxy for a GNU/Linux station's control access to Internet filtering the outgoing data through the port 1230; Firewall in order to restrict browsing on entertainment sites and social media and confirming the requested restrictions from a client station; Filer Server and Print Server to detail a station's access through the Domain Controller LDAP to the shared folders service and printers. Finally, a VPN to establish a private communication tunnel to a client station

Open data from the first and second observing runs of Advanced LIGO and Advanced Virgo

Advanced LIGO and Advanced Virgo are monitoring the sky and collecting gravitational-wave strain data with sufficient sensitivity to detect signals routinely. In this paper we describe the data recorded by these instruments during their first and second observing runs. The main data products are gravitational-wave strain time series sampled at 16384 Hz. The datasets that include this strain measurement can be freely accessed through the Gravitational Wave Open Science Center at http://gw-openscience.org, together with data-quality information essential for the analysis of LIGO and Virgo data, documentation, tutorials, and supporting software