Learn how to configure and manage network services, including DHCP, DNS, FTP, SSH, and HTTP.

Context: GNU/Linux certification command examples.

Learn how to configure and manage network services, including DHCP, DNS, FTP, SSH, and HTTP.

Configuring and managing network services like DHCP, DNS, FTP, SSH, and HTTP is a vital aspect of GNU/Linux administration. Here are command examples for configuring and managing these network services:

  1. DHCP (Dynamic Host Configuration Protocol):
  • Install DHCP server package (e.g., isc-dhcp-server):
sudo apt install isc-dhcp-server
  • Configure DHCP server (/etc/dhcp/dhcpd.conf):
sudo nano /etc/dhcp/dhcpd.conf

Edit the configuration file to specify DHCP settings such as subnet, IP range, gateway, DNS servers, etc.

  • Start and enable DHCP server:
sudo systemctl start isc-dhcp-server
sudo systemctl enable isc-dhcp-server
  1. DNS (Domain Name System):
  • Install DNS server package (e.g., bind9):
sudo apt install bind9
  • Configure DNS server (/etc/bind/named.conf.local):
sudo nano /etc/bind/named.conf.local

Define zone settings and DNS records for your domain(s).

  • Start and enable DNS server:
sudo systemctl start bind9
sudo systemctl enable bind9
  1. FTP (File Transfer Protocol):
  • Install FTP server package (e.g., vsftpd):
sudo apt install vsftpd
  • Configure FTP server (/etc/vsftpd.conf):
sudo nano /etc/vsftpd.conf

Customize settings such as anonymous access, user accounts, security options, etc.

  • Start and enable FTP server:
sudo systemctl start vsftpd
sudo systemctl enable vsftpd
  1. SSH (Secure Shell):
  • Install SSH server package (e.g., openssh-server):
sudo apt install openssh-server
  • Configure SSH server (/etc/ssh/sshd_config):
sudo nano /etc/ssh/sshd_config

Modify settings such as port number, authentication methods, access controls, etc.

  • Restart SSH server:
sudo systemctl restart sshd
  1. HTTP (Hypertext Transfer Protocol):
  • Install HTTP server package (e.g., Apache HTTP Server):
sudo apt install apache2
  • Configure HTTP server (/etc/apache2/sites-available/000-default.conf):
sudo nano /etc/apache2/sites-available/000-default.conf

Customize settings such as document root, virtual hosts, access controls, etc.

  • Start and enable HTTP server:
sudo systemctl start apache2
sudo systemctl enable apache2

These command examples provide a starting point for configuring and managing network services in a GNU/Linux environment. Remember to adjust the commands and configuration files based on your specific requirements, distribution, and version of GNU/Linux. Additionally, ensure you have proper security measures in place when configuring network services.

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