DHCP SERVICE CONFIGURATION FOR THE WHOLE COMPANY

To configure a DHCP server on a Rocky Linux system, follow these steps: First, we need to install the DHCP service. The next step is to configure the DHCP configuration file: sudo vim /etc/dhcp/dhcpd.conf Finally, we need to enable the DHCP service: sudo systemctl enable dhcpdsudo systemctl start dhcpd

DNS CONFIGURATION

Install BIND and Necessary Tools: Global BIND Configuration To make BIND work as a DNS server, you need to configure two elements: first, the global BIND settings, and second, the domain-specific DNS information, which we call “zone information.” Open the file to configure which domains BIND manages: Zone File Configuration Next, we will create the … Read more

CREATION OF A PERSONAL ZONE

Name Resolution for Servers To set up DNS on Rocky Linux, follow these steps: sudo nano /etc/resolv.conf Restart the NetworkManager service: sudo systemctl restart NetworkManager Install DNSMasq: First, install DNSMasq: sudo dnf install dnsmasq -y Start and enable DNSMasq: sudo systemctl start dnsmasqsudo systemctl enable dnsmasq Configure DNSMasq: Edit the configuration file: sudo nano /etc/dnsmasq.conf … Read more

INVENTORY OF DETECTED INCIDENTS

I will explain the network issues we faced during this period. We encountered several problems that we thought would be difficult to solve, but in reality, they were easy fixes. I will describe them in order, starting with the most recent problem:

REMOTE ACCESS SELECTION FOR ALL EQUIPMENTS

CLI (Command Line Interface) For CLI, we will use SSH from the terminal, as it is the most commonly used and accessible tool for us. Through the command line (CLI), we can easily make SSH connections without the need to install graphical interfaces or additional tools. This allows us to work quickly, efficiently, and with … Read more

REMOTE ACCESS CONFIGURATION FOR ALL EQUIPMENTS

CLI Router Central ssh secom@172.25.208.20 Servers ADM Server 1 ssh vagrant@10.0.10.131 Server 2 ssh vagrant@10.0.10.132 Server 3 ssh vagrant@10.0.10.133 Server DMZ Server 4 ssh vagrant@10.0.10.146 Clients Client1 ssh vagrant@10.0.10.2 Client2 ssh vagrant@10.0.10.4 Pública Client 3 vagrant ssh client3 GUI Router Central Servers ADM Server 1 Server 2 Server 3 Server DMZ Server 4 Clients Client1 … Read more

PHYSICAL ROUTER ASSEMBLY AND CONFIGURATION

MOUNTING We added an additional network card to the desktop computer acting as a physical router, using a model like this one: CONFIGURATION The configuration we have used for the router is as follows: 1 → Open the terminal and add the following commands: sudo nano /etc/network/interfaces auto enp2s0 iface enp2s0 inet manual auto eno1 … Read more