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I have several computers connected into a network with Fedora Server installed:

enter image description here

Where one computer has 2 interfaces: WiFi and Ethernet.

  • WiFi is used for outer network access (and Internet too).
  • Ethernet is used for connection to network switch and to other computers connected to this switch.

I need to allow internet access for all computers connected to switch. To achieve, what I need I do following:

  • during installation from USB-live I select the WiFi network
  • after that I select the Ethernet interface, go to IPv4 Settings and select Shared to other computers

As result:

  • This computer automatically shares Internet access to other computers connected to switch
  • Each freshly connected computer to switch automatically obtains it own IP address in the same subnet as computer with WiFi

How to achieve the same using terminal?

I found and tried several options:

  1. parprouted eth0 wlan0
    sysctl net.ipv4.ip_forward=1
    
  2. 2.
sudo
ip addr add 192.168.0.1/24 dev eth0
iptables -A FORWARD -o wlan0 -i eth0 -s 192.168.0.0/24 -m conntrack --ctstate NEW -j ACCEPT
sudo iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
sudo iptables -t nat -F POSTROUTING
sudo iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE

Neither worked.

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All I needed to do is:

Edit /etc/sysconfig/network-script/ifcfg-"name_of_interface". Find there a lines with parameters:

  • BOOTPROTO and set it to BOOTPROTO=shared
  • IPV6_AUTOCONF and set it as IPV6_AUTOCONF=shared
  • IPV6_PRIVACY and set it asIPV6_PRIVACY=no

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