Look at the [https://help.riseup.net/vpn riseup VPN help page] for [https://help.riseup.net/en/riseup-ca <code>RiseupCA.pem</code>] and (right-click) [https://help.riseup.net/security/network-security/riseup-ca/RiseupCA.pem download] it. Store the certificate in {{Code2|/etc/openvpn/RiseupCA.pem}}

{{CodeSelect|code=
curl {{Curl_Secure}} https://help.riseup.net/security/network-security/riseup-ca/RiseupCA.pem {{!}} sudo tee /etc/openvpn/RiseupCA.pem
}}