Forbid login on tty1, disable tty2-6

basic.sh

@@ -17,4 +17,8 @@ update-grub
 
 # Set legal banner with URL + latin2 character set
 cp basic/etc/default/console-setup /etc/default/console-setup
-cp basic/etc/issue /etc/issue
+cp basic/etc/issue /etc/issue
+
+# Forbid login on tty1, disable tty2-6
+cp basic/lib/systemd/system/getty@.service /lib/systemd/system/getty@.service
+systemctl mask getty-static

basic/lib/systemd/system/getty@.service

@@ -0,0 +1,53 @@
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+
+[Unit]
+Description=Getty on %I
+Documentation=man:agetty(8) man:systemd-getty-generator(8)
+Documentation=http://0pointer.de/blog/projects/serial-console.html
+After=systemd-user-sessions.service plymouth-quit-wait.service
+After=rc-local.service
+
+# If additional gettys are spawned during boot then we should make
+# sure that this is synchronized before getty.target, even though
+# getty.target didn't actually pull it in.
+Before=getty.target
+IgnoreOnIsolate=yes
+
+# IgnoreOnIsolate causes issues with sulogin, if someone isolates
+# rescue.target or starts rescue.service from multi-user.target or
+# graphical.target.
+Conflicts=rescue.service
+Before=rescue.service
+
+# On systems without virtual consoles, don't start any getty. Note
+# that serial gettys are covered by serial-getty@.service, not this
+# unit.
+ConditionPathExists=/dev/tty0
+
+[Service]
+# the VT is cleared by TTYVTDisallocate
+ExecStart=-/sbin/agetty -l /usr/sbin/nologin %I $TERM
+Type=idle
+Restart=always
+RestartSec=0
+UtmpIdentifier=%I
+TTYPath=/dev/%I
+TTYReset=yes
+TTYVHangup=yes
+TTYVTDisallocate=yes
+KillMode=process
+IgnoreSIGPIPE=no
+SendSIGHUP=yes
+
+# Unset locale for the console getty since the console has problems
+# displaying some internationalized messages.
+Environment=LANG= LANGUAGE= LC_CTYPE= LC_NUMERIC= LC_TIME= LC_COLLATE= LC_MONETARY= LC_MESSAGES= LC_PAPER= LC_NAME= LC_ADDRESS= LC_TELEPHONE= LC_MEASUREMENT= LC_IDENTIFICATION=
+
+[Install]
+WantedBy=getty.target
+DefaultInstance=tty1