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  • Posts
  • CI / CD Jenkins
    • CI / CD practice with Jenkins
    • Workshop 1 Ortho-rector of markdown documents (test)
    • Workshop 2 Valid HTML5 check and surge.sh deployment (test and deploy)
    • Workshop 3 Continuous integration of django application (Test)
  • Database
    • Install MariaDB in Debian
    • Interconnection of database servers
    • Oracle 19c installation under Debian 12
    • PostgreSQL installation in Debian 12
    • Remote access configuration in Oracle
    • Remote access in MariaDB
  • Docker
    • Docker Compose Installation on Ubuntu 24
    • Docker Installation on Ubuntu 24
    • Workshop 1 Storage and networks in Docker
    • Workshop 2 Multicontainer Scenarios in Docker
    • Workshop 3 Image creation Docker
  • Firewall
    • Fortinet CLI
    • Perimetral with Fortinet I
    • Perimetral with Fortinet II
    • Perimetral with Nftables I
    • Perimetral with Nftables II
  • Linux Drivers
    • Drivers Nvidia
    • How to choose which graph to use on my laptop with Linux
  • Networks
    • Android GNS3-KVM
    • Basic IPv6 scenario
    • GNS3 and Wireshark installation
    • GNS3 installation in Debian 12
    • GNS3 switch configuration
    • IPV6 Tunnels
    • NAT in Cisco and Linux
    • Network monitoring commands
    • OpenStack routing
    • Protocol ARP
    • Underworld
    • Underworld evolution
  • Observability
    • Metrics
      • Prometheus
        • Installation of Prometheus with Docker Compose and Node Exporter on Debian 12
  • Security
    • Forensic computer
    • HTTPS
  • Services
    • Apache
    • DHCP
      • Installation and Configuration of a DHCP Server on Linux
    • DNS
      • BIND9
        • Configuring a Slave DNS Server with BIND9
        • Installation and Configuration of BIND9 on Linux
      • DNSMASQ
        • Local Server with DNSMasq
    • FTP
    • NAT with iptables
    • SSH
  • Systems
    • Active Directory in Ubuntu
    • Centralized collection of logs journald
    • Compilations in LINUX
      • Compilation of a C-program using a Makefile
      • Compilation of a kernel
    • Creation of an automated installation system
    • Install and configure samba in Debian
    • Linux Command
      • Kernel parameter modification exercises
      • Linux processes
      • Module management exercises
      • Package management
      • Packaging and compressors
      • Paid management exercises
      • Task programming
    • Migration in Linnux
      • File system
      • Migtation from CentOS stream 8 to CentOS stream 9
      • Systemd elimination
      • Transformation instance cloud
    • NFS in Debian
    • SELinux activation configuration
    • Share resources in Windows
    • Ssh service in Windows
    • Storage Spaces in Windows Server
  • VPN
    • OpenVPN and Wireguard Comparative
    • OpenVPN remote access
    • Remote access Ipsec StrongSwan
    • Site-to-Site IPsec Cisco
    • Site-to-Site IPsec Fortinet
    • Site-to-Site OpenVPN
    • Site-to-Site Wireguard
    • Wireguard remote access
  • Web applications
    • LAMP stack installation
    • LEMP stack installation
    • WordPress LAMP
    • WordPress LEMP
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Install and configure samba in Debian

Samba is a free and open source implementation of the Server Message Block (SMB) protocol, which is used to share files and printers on computer networks. The SMB protocol is a network protocol that allows Windows operating systems to communicate with other network devices, such as file servers, printers and other shared resources. Samba facilitates interoperability between Windows systems and Unix / Linux-based operating systems by allowing Unix systems to share files and resources with Windows systems using the SMB / CIFS protocol. This means that a Samba server can act as a file server for Windows customers, allowing them to access and share files as if they were in a Windows environment.

  • Debian 12
  • Sistemas
  • ISO
  • ASO
Wednesday, September 20, 2023 | 2 minutes Read
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Linux task programming commands

The efficient management of programmed tasks is essential for system managers as it facilitates the automatic execution of routine processes. In this context, having a solid set of Linux commands to program and control tasks becomes a fundamental tool. Sleep command The sleep command stops running in the terminal for a specified time interval before returning to the command line. You can indicate the time in seconds, minutes, hours or days. This command is found in the choreutils package.

  • Debian 12
  • Sistemas
  • ISO
  • ASO
Wednesday, September 20, 2023 | 5 minutes Read
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SELinux activation configuration

Enable SELinux on a Rocky-based server and make sure that the samba and nfs services work properly with a strict and secure SELinux configuration. Conducts the corresponding access tests. The stage consists of two machines, our server is based on Rocky 9 and our client is a Debian 12. On our server we will have SELinux enabled in enforcing mode. [rocky@rocky-javiercruces ~]$ sestatus SELinux status: enabled SELinuxfs mount: /sys/fs/selinux SELinux root directory: /etc/selinux Loaded policy name: targeted Current mode: enforcing Mode from config file: enforcing Policy MLS status: enabled Policy deny_unknown status: allowed Memory protection checking: actual (secure) Max kernel policy version: 33 We will start by updating the packages needed to configure samba and nfs:

  • ASO
  • REDHAT
  • ROCKY
  • CENTOS
Wednesday, September 20, 2023 | 6 minutes Read
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Linux Process Management

In the Linux ecosystem, a process is the execution of a specific program that performs a particular task. Each process has its own unique identifier (PID) and is composed of a set of resources, such as memory and CPU, that allow it to operate independently. In the Linux universe, effective process management is a crucial ability to optimize performance and ensure system stability. This post will immerse you in the essential foundations of process management

  • Debian 12
  • Sistemas
  • ISO
  • ASO
Friday, September 8, 2023 | 7 minutes Read
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Migration of a file system

Sometimes, it is necessary to update the storage of our Debian system to meet the growing space needs and improve the organization of the disk. In this guide, we will explore the migration process from a single disk to one with greater capacity, as well as divide it into separate partitions for more efficient management. This process will not only expand the available storage space, but also provide a more orderly structure to the system, facilitating tasks such as backup management, system performance and disk space management.

  • Debian 12
  • Sistemas
  • ISO
  • ASO
Friday, September 8, 2023 | 5 minutes Read
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Packaging and compressors in Linux

Packers and compressors are key elements in the management of files and data in the computer field. The packers allow to group several files in a single container, facilitating their handling and transport. On the other hand, compressors apply techniques to reduce file size, contributing to storage space savings and expediting data transfer. These tools play a crucial role in resource optimization and operational efficiency by more effectively organizing, distributing and supporting information.

  • Linux
  • Sistemas
  • ISO
  • ASO
Friday, September 8, 2023 | 11 minutes Read
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Share directories with NFS in debian

The NFS (Network File System) technology has been a key part of file sharing in network environments. Developed by Sun Microsystems, NFS allows Unix and Linux operating systems to share file resources transparently, providing access to remote files and directories as if they were stored locally. 1.Installation and NFS configuration We installed the nfs-kernel-server package. We will create the directory we are going to share and change the owners and permissions of it:

  • Linux
  • Sistemas
  • ISO
  • ASO
Friday, September 8, 2023 | 2 minutes Read
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Sharing Network Resources on Windows Server

In the business environment, the capacity to share resources in network is essential for collaboration and operational efficiency. In this article, we will explore how to share directories in a Windows Server environment, addressing the methods through both the graphical interface and cmd and PowerShell. From the graphic interface We can share a directory of our server, accessing its properties. Once here we click on the share menu: We will now give permission to users who wish to have access to this:

  • Windows
  • Sistemas
  • ISO
  • ASO
Friday, September 8, 2023 | 2 minutes Read
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Storage Spaces on Windows Server

Storage Spaces is a software-defined storage feature in the Windows Server operating system that allows system administrators to combine several physical disks in a single logical storage space called “storage pool.” This storage pool can be used to create virtual storage spaces called “storage spaces” that offer various redundancy functions and advanced storage management capabilities. Storage groups The following Windows PowerShell cmdlets perform the same function as the previous procedure. Write each cmdlet in a single line, although here you can appear with line jumps between several lines here due to format restrictions.

  • Linux
  • Sistemas
  • ISO
  • ASO
Friday, September 8, 2023 | 2 minutes Read
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Windows Ssh Service Settings

1.Installation of the feature The first thing we’ll check is to check if the ssh server is installed in the machine we want to connect to. Get-WindowsCapability -Online | Where-Object Name -like 'OpenSSH\*' In case we have the feature we will install it: Add-WindowsCapability -Online -Name OpenSSH.Server~~~~0.0.1.0 By default the service will be stopped so we take it off: We can set it to automatically boot when you restart the computer: #2. Connect us using key pair

  • Windows
  • Sistemas
  • ISO
  • ASO
Friday, September 8, 2023 | 1 minute Read
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Contact me:
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  • Francisco Javier Cruces Doval

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