European defence officials are pushing back against parts of the EU’s proposed Cloud and AI Development Act that would introduce stricter sovereignty requirements for cloud services used by military and other sensitive public-sector systems, according to the Financial Times. The report said officials from several EU countries, including eastern and Nordic member states, are concerned […]
Amazon Web Services and Microsoft have introduced managed private connectivity between their cloud platforms, allowing customers to establish dedicated network links between AWS and Microsoft Azure. AWS Interconnect – multicloud with Azure and Azure Multicloud Interconnect for AWS are now available in public preview. The two services work together to provide private cloud-to-cloud connectivity without […]
Un servidor recién instalado y expuesto a internet recibe intentos de acceso en cuestión de minutos. Estas medidas básicas reducen mucho la superficie de ataque.
Actualiza el sistema y activa las actualizaciones de seguridad automáticas.
Crea un usuario sin privilegios con sudo y deja de usar root para el día a día.
Acceso SSH solo con llave y desactiva la autenticación por contraseña.
Prohíbe el login de root por SSH.
Cambia el puerto SSH si quieres reducir ruido en los registros (no es seguridad real, pero ayuda).
Activa un cortafuegos y abre solo los puertos que usas.
Instala fail2ban para bloquear IPs que fuerzan contraseñas.
Desactiva servicios que no uses.
Sincroniza la hora con NTP: los registros y los certificados lo agradecerán.
Configura copias de seguridad fuera del propio servidor.
Antes de cerrar la sesión
Cuando cambies la configuración de SSH, prueba el nuevo acceso en otra terminal antes de cerrar la actual. Es la forma más sencilla de no quedarse fuera del servidor.
AWS plans to deploy another two million Nvidia GPUs across its global infrastructure in 2027 and 2028, adding to an earlier commitment for more than one million GPUs. The additional deployment will include Nvidia Blackwell Ultra, Rubin, and Rubin Ultra GPUs. The agreement also covers Nvidia CPUs, networking, and interconnect technology that AWS plans to […]
Azure VMware Solution customers using VMware Cloud Foundation licences bundled with pay-as-you-go deployments have until October 31, 2026, to move to a bring-your-own-licence model. After that date, Microsoft says those deployments will no longer comply with Broadcom’s licensing requirements unless customers provide their own VCF subscription. Microsoft stopped selling new Azure VMware Solution nodes with […]
Cloud infrastructure has become essential to modern business operations, yet it presents security challenges distinct from traditional IT environments. ISO 27017 delivers a framework for cloud security that establishes controls to address these unique risks. Organizations seeking to validate their cloud security practices can pursue certification through accredited bodies that verify compliance with this international […]
Cloud infrastructure has become essential to modern business operations, yet it presents security challenges distinct from traditional IT environments. ISO 27017 delivers a framework for cloud security that establishes controls to address these unique risks. Organizations seeking to validate their cloud security practices can pursue certification through accredited bodies that verify compliance with this international […]
Tencent Cloud plans to establish its first cloud region in Malaysia, while Alibaba Cloud has launched a third data centre in South Korea, adding capacity in two Asian markets as global cloud infrastructure spending continues to rise. Both announcements were made on August 18. Tencent’s planned Malaysia region will comprise up to three availability zones […]
Cambiar los servidores DNS de un dominio es una operación habitual: al mover una web a otro hosting, al activar un CDN o al centralizar la gestión de varios dominios. Bien planificada, no provoca cortes.
Nameservers y registros
Conviene distinguir dos cosas. Los nameservers indican qué servidores son autoritativos para el dominio y se configuran en el registrador. Los registros (A, AAAA, CNAME, MX, TXT) viven en esos servidores y dicen a dónde apunta cada nombre.
Paso a paso
Copia la zona actual: exporta o anota todos los registros, incluidos MX y TXT del correo (SPF, DKIM, DMARC).
Crea la zona en el nuevo proveedor con exactamente los mismos registros.
Baja el TTL de los registros importantes unas horas antes, si el proveedor actual lo permite.
Cambia los nameservers en el registrador. Con registradores como INWX se hace desde el panel del dominio en un par de minutos.
Comprueba la propagación con dig NS tudominio.es contra varios resolvers.
Errores típicos
Olvidar los registros MX y quedarse sin correo.
Borrar la zona antigua antes de que termine la propagación.
No revisar los registros TXT de verificación de servicios como Search Console.
Cuánto tarda
El cambio de nameservers depende del registro del dominio y de las cachés de los resolvers. En dominios .es puede tardar desde minutos hasta unas horas; no toques nada mientras tanto.
Amazon is redistributing parts of its e-commerce infrastructure across a wider range of AWS regions amid reported constraints on power and data centre capacity. The multiyear programme, known internally as “Region Flex”, is intended to reduce Amazon’s reliance on several large AWS regions and spread workloads across more locations, according to internal planning documents obtained […]