# nano /etc/apt/sources.list

deb http://ftp.debian.org/debian jessie-backports main

# apt-get update
# apt-get -t jessie-backports install znc

# apt-get update
# apt-get install znc

# adduser znc
# su znc
$ znc --makeconf

• run this as a limited user and crontab -e an entry for /usr/bin/znc on reboot
• the configs will be found in /home/znc/.znc