I needed to setup 2 instances of VSFTPD. So I created a 2nd conf file

/etc/vsftpd-2.conf

and a 2nd init script

/etc/init.d/vsftpd-2

I edited the contents of /etc/vsftpd-2.conf to include the following line

listen_port=1123.

I also needed to edit the /etc/init.d/vsftpd-2 file so when the start-stop-daemon is starting up the application, it uses a different pid & a different vsftpd conf file.

Below are some excerpts from the /etc/init.d/vsftpd-2 file:

CONFIG2FILE="/etc/vsftpd-2.conf"#DAEMON="/usr/sbin/vsftpd ${CONFIG2FILE}"DAEMON="/usr/sbin/vsftpd"ARGS="$CONFIG2FILE"NAME="vsftpd-2"PATH="/sbin:/bin:/usr/sbin:/usr/bin"LOGFILE="/var/log/vsftpd.log"CHROOT="/var/run/vsftpd-2/empty"CONFFILE="${CONFIG2FILE}"case "${1}" in    start)        Check_standalone_mode || exit 0        echo -n "Starting FTP server: "        start-stop-daemon --start --background -m --oknodo --pidfile /var/run/vsftpd/vsftpd2.pid --exec ${DAEMON} -- ${ARGS}        echo "${NAME}."        ;;    reload|force-reload)        echo "Reloading FTP server configuration: "        start-stop-daemon --stop --pidfile /var/run/vsftpd/vsftpd2.pid --signal 1 --exec $DAEMON -- ${ARGS}        echo "${NAME}."        ;;