Apuntes

Auto Backup Cisco Router & Switch with Kron and FTP Server Posted by ethernuno on 05/04/2012 Automatic Backup Cisco Router & Switch with Kron and vsftpd FTP. Briefing: In Cisco routers or switches, Kron lets you schedule an automatic backup task to save your running-configs or startup-configs. Also useful to backup IOS images, boot from FTP, copy SDM/ASDM files, and more. In the first example ill configure kron to copy the running-config to startup-config, every Automatically. The second example ill configure kron to send backups of the running-config to vsftpd FTP server. Issues : In order to copy the running-config to startup-config we need to use write(wr) not “copy running-config startup-config”, this is because kron does not support interactive prompts and the “copy running-config startup-config” command requires interaction. It is important to remember this. Also, kron does not support configuration commands. As for sending files to v...

Reset a Cisco 2960 Switch To Factory Default Settings Flattening a switch before re-deployment is one of those simple tasks that I always find myself having lookup on the web, so I thought I’d save myself some time in future and document it here. Step 1. Connect up your console cable and power on the switch, whilst holding down the “mode” button: This interrupts the boot process before the Flash file system can initialize, and after a short while (continue holding the “mode” button) you will see the following prompt: Using driver version 1 for media type 1 Base ethernet MAC Address: 4c:30:2d:81:ef:80 Xmodem file system is available. The password-recovery mechanism is enabled. The system has been interrupted prior to initializing the flash filesystem. The following commands will initialize the flash filesystem, and finish loading the operating system software: flash_init boot switch: Step 2. Initialize the flash file system with the command : fl...

Install Zabbix 3.0 (Monitoring Server) on CentOS 7.x / RHEL 7.x by Pradeep Kumar · Published April 11, 2016 · Updated April 11, 2016 Zabbix is a free and open source monitoring tool which is used to monitor and track the availability & performance of servers, network devices and other IT assets which are on network. Zabbix uses database like MySQL, MariaDB, Oracle and IBM DB2 to store its data. Zabbix web interface is written in PHP. Some of its key features are listed below : Monitor everything which is on network like Servers, applications, database instance and network devices. Zabbix provides Web based administration interface. Monitoring CPU utilization of a particular process or a group of process ( proc.cpu.util) Using low-level discovery rules, zabbix can discover Vmware hypervisor ( ESXI ) and Virtual machines. Zabbix also supports agentless monitoring Monitoring of database server...

RESTART PASSWORD ROOT UBUNTU By default the first user's account is an administrative account, so if the UI is prompting you for a password it's probably that person's user password. If the user doesn't remember their password you need to reset it. To do this you need to boot into recovery mode. Boot up the machine, and  after  the BIOS screen, hold down the left  Shift  key. You will then be prompted by a menu that looks something like this: I've noticed on some systems that timing when to hit the left  Shift  key can be tricky, sometimes I miss it and need to try it again. Hit the down arrow until you select the  2nd entry from the top  (the one with the  recovery mode in the description ) and then hit  Enter . Now you should see this menu: Using the arrow keys scroll down to  root  and then hit  Enter . You should now see a root prompt, something like this: root@ubuntu:~# At this stage you should...

ACTUALIZAR  FIRMWARE SWITCH JUNIPER     Logueamos Logueamos con USER :root y SIN password Insertar el USB conteniendo la última versión de softw are Tipear el siguiente comando mkdir /mnt/usb Luego tipear mount -t msdosfs /dev/da1 s1  /mnt/usb Y ahora cp /mnt/usb/jinstall-ex-4200-10.0S6.1-domestic-signed.tgz /var/tmp/jinstall-ex-4200-10.0S6.1-domestic-signed.tgz Ingresar el comando “cli” Request  system  software add /var/tmp/nombrearchivo.tgz reboot Hacer un show versión y comprobar si  es la correcta que estaba en el USB.

Esto es para quitar el atributo de oculto de los archivos a causa de ataque a su computador 1.- Inicio - Ejecutar y escriba CMD 2.- Con el comando "cd.."rerocede en la carpetas, hasta ubicarse en la letra raiz, ejemplo "c:" o simplemente escribae la letra de la unidad afectada si manejas varias particiones o varios discos duros, siempre acompañado de lso pdos puntos. 3.- Una vez en la letra correspondiente a la unidad escriba o copie y pegue attrib -h -r -s *.* /s /d Luego presione Enter y espere unos segundos y listo, ya podra ver todos los archivos ocultos

En el Administrador de Dispositivos de Windows ( Inicio >> Ejecutar >> devmgmt.msc) podemos ver, modificar y actualizar todos los drivers (controladores) de nuestros dispositivos. Los dispositivos que Windows considere que no son Plug and Play no se mostraran en esta pantalla, para verlos dentro del Administrador de Dispositivos en el menú Ver marcaremos la opción de mostrar dispositivos ocultos . Ahora si nos aparecerán los dispositivos que no sean Plug and Play, así como su estado. Cuando quitamos un dispositivo de nuestro sistema, Windows sigue manteniendo los controladores de este, lo cual nos puede ocasionar problemas (como en el caso de las tarjetas de red y/o dispositivos Usb) a la hora de configurar el nuevo dispositivo. Para solucionar este problema debemos establecer una variable de sistema llamada DEVMGR_SHOW_NONPRESENT_DEVICES poniendo el valor a 1. Esto lo podemos hacer desde las Variables de Entorno o desde línea de comando escribiendo set devmgr_...