Prerequisites

1. The network must have 802.1X network authentication.
2. The Ethernet connection profile exists in NetworkManager and has a valid IP configuration.
3. If the client is required to verify the certificate of the authenticator, the Certificate Authority (CA) certificate must be stored in the /etc/pki/ca-trust/source/anchors/ directory.
4. The wpa_supplicant package is installed.

Procedure

1. Set the Extensible Authentication Protocol (EAP) to peap, the inner authentication protocol to mschapv2, and the user name:

   # nmcli connection modify enp1s0 802-1x.eap peap 802-1x.phase2-auth mschapv2 802-1x.identity user_name

   Note that you must set the 802-1x.eap, 802-1x.phase2-auth, and 802-1x.identity parameters in a single command.

2. Optionally, store the password in the configuration:

   # nmcli connection modify enp1s0 802-1x.password password

   Important

   By default, NetworkManager stores the password in clear text in the /etc/sysconfig/network-scripts/keys-connection_name file, that is readable only by the root user. However, clear text passwords in a configuration file can be a security risk.

   To increase the security, set the 802-1x.password-flags parameter to 0x1. With this setting, on servers with the GNOME desktop environment or the nm-applet running, NetworkManager retrieves the password from these services. In other cases, NetworkManager prompts for the password.

3. If the client is required to verify the certificate of the authenticator, set the 802-1x.ca-cert parameter in the connection profile to the path of the CA certificate:

   # nmcli connection modify enp1s0 802-1x.ca-cert /etc/pki/ca-trust/source/anchors/ca.crt

   Note

   For security reasons, Red Hat recommends using the certificate of the authenticator to enable clients to validate the identity of the authenticator.

4. Activate the connection profile:

   # nmcli connection up enp1s0

Procedure

1. If the host on which you want to execute the instructions in the playbook is not yet inventoried, add the IP or name of this host to the /etc/ansible/hosts Ansible inventory file:

   node.example.com

2. Create the ~/enable-802.1x.yml playbook with the following content:

   ---
   - name: Configure an Ethernet connection with 802.1X authentication
     hosts: node.example.com
     become: true
     tasks:
       - name: Copy client key for 802.1X authentication
         copy:
           src: "/srv/data/client.key"
           dest: "/etc/pki/tls/private/client.key"
           mode: 0600
   
       - name: Copy client certificate for 802.1X authentication
         copy:
           src: "/srv/data/client.crt"
           dest: "/etc/pki/tls/certs/client.crt"
   
       - name: Copy CA certificate for 802.1X authentication
         copy:
           src: "/srv/data/ca.crt"
           dest: "/etc/pki/ca-trust/source/anchors/ca.crt"
   
       - include_role:
           name: linux-system-roles.network
         vars:
           network_connections:
             - name: enp1s0
               type: ethernet
               autoconnect: yes
               ip:
                 address:
                   - 192.0.2.1/24
                   - 2001:db8:1::1/64
                 gateway4: 192.0.2.254
                 gateway6: 2001:db8:1::fffe
                 dns:
                   - 192.0.2.200
                   - 2001:db8:1::ffbb
                 dns_search:
                   - example.com
               ieee802_1x:
                 identity: user_name
                 eap: tls
                 private_key: "/etc/pki/tls/private/client.key"
                 private_key_password: "password"
                 client_cert: "/etc/pki/tls/certs/client.crt"
                 ca_cert: "/etc/pki/ca-trust/source/anchors/ca.crt"
                 domain_suffix_match: example.com
               state: up

3. Run the playbook:

   • To connect as root user to the managed host, enter:

     # ansible-playbook -u root ~/enable-802.1x.yml

   • To connect as a user to the managed host, enter:

     # ansible-playbook -u user_name --ask-become-pass ~/ethernet-static-IP.yml

     The --ask-become-pass option makes sure that the ansible-playbook command prompts for the sudo password of the user defined in the -u user_name option.

   If you do not specify the -u user_name option, ansible-playbook connects to the managed host as the user that is currently logged in to the control node.

Prerequisites

1. The network must have 802.1X network authentication.
2. The Wi-Fi connection profile exists in NetworkManager and has a valid IP configuration.
3. If the client is required to verify the certificate of the authenticator, the Certificate Authority (CA) certificate must be stored in the /etc/pki/ca-trust/source/anchors/ directory.
4. The wpa_supplicant package is installed.

Procedure

1. Set the Wi-Fi security mode to wpa-eap, the Extensible Authentication Protocol (EAP) to peap, the inner authentication protocol to mschapv2, and the user name:

   # nmcli connection modify wpl1s0 802-11-wireless-security.key-mgmt wpa-eap 802-1x.eap peap 802-1x.phase2-auth mschapv2 802-1x.identity user_name

   Note that you must set the 802-11-wireless-security.key-mgmt, 802-1x.eap, 802-1x.phase2-auth, and 802-1x.identity parameters in a single command.

2. Optionally, store the password in the configuration:

   # nmcli connection modify wpl1s0 802-1x.password password

   Important

   By default, NetworkManager stores the password in clear text in the /etc/sysconfig/network-scripts/keys-connection_name file, that is readable only by the root user. However, clear text passwords in a configuration file can be a security risk.

   To increase the security, set the 802-1x.password-flags parameter to 0x1. With this setting, on servers with the GNOME desktop environment or the nm-applet running, NetworkManager retrieves the password from these services. In other cases, NetworkManager prompts for the password.

3. If the client is required to verify the certificate of the authenticator, set the 802-1x.ca-cert parameter in the connection profile to the path of the CA certificate:

   # nmcli connection modify wpl1s0 802-1x.ca-cert /etc/pki/ca-trust/source/anchors/ca.crt

   Note

   For security reasons, Red Hat recommends using the certificate of the authenticator to enable clients to validate the identity of the authenticator.

4. Activate the connection profile:

   # nmcli connection up wpl1s0