Configure #37c3 Wi-Fi on Linux:

nmcli connection add \
type wifi \
con-name 37C3 ssid 37C3 \
wifi-sec.key-mgmt wpa-eap \
802-1x.eap ttls \
802-1x.anonymous-identity "37C3" \
802-1x.ca-cert /etc/ssl/certs/ISRG_Root_X1.pem \
802-1x.domain-suffix-match radius.c3noc.net \
802-1x.phase2-auth pap \
802-1x.identity outboundonly \
802-1x.password outboundonly

More:
events.ccc.de/congress/2023/in…
events.ccc.de/congress/2023/in…

#c3noc