# Connect to eduroam on Linux

:warning: You will lose all WiFi passwords saved in your system :warning:

These instructions have been tested in ArchLinux without NetworkManager installed. It should work if NetworkManager is disabled and stopped (`sudo systemctl --disable now NetworkManager`).

You will need `systemd-networkd` and `wpa_supplicant`, both of which are normally in default installations of GNU/Linux. To configure it, you will need to find your WiFi and Ethernet interfaces (`ifconfig` or `ip` should display them, they should look like `enpXsY`, `ethX`, `wlanX` or `wlpXsY`).

All files belong to `root:root`

* `/etc/wpa_supplicant/wpa_supplicant-WIFI_INTERFACE.conf`, with permissions `600`

```
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
update_config=1

network={
    ssid="UPVNET"
    key_mgmt=WPA_EAP
    eap=PEAP
    phase1="peaplabel=auto tls_disable_tlsv1_2=1"
    phase2="auth=MSCHAPV2"
    ca_cert="/etc/ssl/certs/thawte_Primary_Root_CA.pem"
    identity="x@alumno.upv.es"
    password="y"
    priority=10
}

network={
    ssid="your_home_network_name"
    psk="your_home_network_password"
}
```

* `/etc/systemd/network/WIFI_INTERFACE.network`, with permissions `644`

```
[Match]
Name=WIFI_INTERFACE

[Network]
DHCP=yes
UseDomains=yes
IPv6PrivacyExtensions=true
```

* `/etc/systemd/network/ETHERNET_INTERFACE.network`, with permissions `644`

```
[Match]
Name=ETHERNET_INTERFACE

[Network]
DHCP=yes
```

Then, run this:

```bash
mv /etc/resolv.conf{,.bak}
ln -s /usr/lib/systemd/resolv.conf /etc/resolv.conf
```

Finally, enable and start `systemd-networkd`, `systemd-resolved` and `wpa_supplicant@WIFI_INTERFACE`:
```
sudo systemctl enable --now systemd-networkd systemd-resolved wpa_supplicant@WIFI_INTERFACE
```