Package: fail2ban Version: 0.10.2-1 Severity: minor /etc/fail2ban/action.d/helpers-common.conf has CRLF line terminators:
$ file /etc/fail2ban/action.d/helpers-common.conf /etc/fail2ban/action.d/helpers-common.conf: ASCII text, with CRLF line terminators I doubt this is on purpose. -- System Information: Debian Release: buster/sid APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 4.14.0-3-amd64 (SMP w/8 CPU cores) Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=POSIX (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages fail2ban depends on: ii lsb-base 9.20170808 ii python3 3.6.4-1 Versions of packages fail2ban recommends: ii iptables 1.6.1-2+b1 ii python 2.7.14-4 ii python3-pyinotify 0.9.6-1 ii python3-systemd 234-1 ii whois 5.3.0 Versions of packages fail2ban suggests: ii bsd-mailx [mailx] 8.1.2-0.20160123cvs-4 ii monit 1:5.25.1-1 ii rsyslog [system-log-daemon] 8.32.0-1 ii sqlite3 3.22.0-1 -- no debconf information