SMR

Configuring a Slave DNS Server with BIND9

In this guide, you will learn how to configure a slave DNS server using BIND9 on Debian. This server will sync with the master server (dns1.javiercruces.org) and distribute the name resolution load in your local network. You will also be guided to verify that the zone transfer works correctly. In this case, the slave server is located in the 192.168.10.0/24 network, with the IP 192.168.10.200. 1. Initial Setup of the Slave Server Hostname First, assign the correct hostname. Edit the /etc/hostname file:

Saturday, May 10, 2025 | 5 minutes Read

Installation and Configuration of BIND9 on Linux

In this guide, you will learn how to install and configure a DNS server on Linux using BIND9. You will set up forward and reverse lookup zones for your domain, allow DNS queries from other machines on the network, and perform tests using tools like dig. You will also learn how to configure forwarders to efficiently resolve external domain names. 1. Initial Preparation Create the DNS Machine Create a machine and set its name to dns1.yourname.org.

Sunday, May 4, 2025 | 3 minutes Read

Apache configuration under debian

Install an Apache web server for use in an Intranet To install the server we must run as root the following command: Create within the / var / www / html directory a file called intrada.html where you put a welcome message Now I’ll put it inside the route: Next we will post a more complete page on our server, for it use your web application website.

Friday, September 8, 2023 | 2 minutes Read

DNS server configuration in Debian

Dnsmasq The dnsmasq package allows you to start a DNS server in a very simple way. Simply by installing and starting the dnsmasq service, without any additional configuration, our PC will become a DNS cache server and will also solve the names we have configured in the / etc / hosts file of our server. The resolution will work both directly and inversely, that is, it will solve the IP given a PC name and the PC name given the IP.

Friday, September 8, 2023 | 3 minutes Read

FTP under debian

FTP server under debian Installation and configuration of the authenticated proFTPd server First we will create a group called ftpgroup: Create two local users from the ftp group we have created: Jose and Maria We install the ftp service: Basic configuration of the proftpd.conf file: All users access your directory only: We can now access from the browser with users Jose and Maria: Each of these I have created a folder with your name within your personal directories in order to identify them.

Friday, September 8, 2023 | 2 minutes Read

Installing and Configuring a DHCP Server on Linux

Configuring the DHCP Server on Debian In this article, you will learn how to configure the isc-dhcp-server. Additionally, we will configure an IP reservation and set it up to operate on two different scopes. Here is my DHCP server’s network configuration: # Router external network auto ens4 iface ens4 inet dhcp # Internal network 1 auto ens5 iface ens5 inet static address 192.168.10.1 netmask 255.255.255.0 # SNAT for ens5 network , ensure that bit of forwarding is activated. post-up iptables -t nat -A POSTROUTING -o ens4 -j MASQUERADE post-down iptables -t nat -D POSTROUTING -o ens4 -j MASQUERADE # Internal network 2 auto ens6 iface ens6 inet static address 192.168.20.1 netmask 255.255.255.0 Installing the isc-dhcp-server To install the DHCP server on Debian, run the following command:

Friday, September 8, 2023 | 4 minutes Read

NAT with iptables

NAT with iptables In this article you will learn to set up a small scenario in which you can set up a series of services. You will create the scenario described below, and you will make it through an internal network, using a Linux server, that you have access to the Internet by configuring SNAT in it by using iptables. Installation of the test environment We will install the following environment:

Friday, September 8, 2023 | 2 minutes Read

SSH under debian

#SSH server under debian Remote management using SSH The first thing we should do is install the package on the server and the client: For safety it is usually not allowed to connect the root to the server; for this, the /etc/ssh/sshd config file should be modified, and the following option is put: And we restart the service to apply the changes: Connect to ssh server We’re going to install the ssh client, for that:

Friday, September 8, 2023 | 4 minutes Read