En muchas ocasiones los servidores sufren ataques a través del protocolo UDP. En la mayoría de los casos, este solamente se utiliza para dar salida a los servicios DNS. Por tanto, una solución posible para prevenir problemas es filtrar el tráfico de este protocolo a través de iptables. Aquí teneis una sencilla secuencia de comandos para bloquear […]
Para aquellos que trabajais con máquinas CentOS en su versión 5, el iptables que trae por defecto es 1.3.5 que al menos en mi caso no funcionaba correctamente. Despues de trastear para arriba y para abajo con la configuracion llegué a la conclusión que tocaba actualizar. En mi caso fue motivado por cientos de peticiones […]
Pese a las constantes actualizaciones de Java por parte de Oracle parece que este sigue siendo una puerta de entrada a los ordenadores de miles de internautas. Oracle releases software update to fix Java vulnerability. Emergency software update repairs vulnerability that could allow remote attackers to execute arbitrary code. Ha sido US-CERT el que ha […]
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