File sshguard.conf of Package sshguard

# #!/bin/sh
# sshguard.conf -- SSHGuard configuration

# Options that are uncommented in this example are set to their default
# values. Options without defaults are commented out.

#### REQUIRED CONFIGURATION ####
# Full path to backend executable (required, no default)
BACKEND="path_and_script"

# Space-separated list of log files to monitor. Ignored if LOGREADER is set.
# (optional, no default)
#FILES="/var/log/auth.log /var/log/authlog /var/log/maillog"

# Shell command that provides logs on standard output. (optional, no default)
# Example 1: ssh and sendmail from systemd journal:
#LOGREADER="LANG=C /usr/bin/journalctl -afb -p info -n1 -t sshd -t sendmail -o cat"
# Example 2: ssh from os_log (macOS 10.12+)
#LOGREADER="/usr/bin/log stream --style syslog --predicate '(processImagePath contains \"sshd\")'"
LOGREADER="LANG=C /usr/bin/journalctl -afb -p info -n1 -t sshd -o cat"

#### OPTIONS ####
# Block attackers when their cumulative attack score exceeds THRESHOLD.
# Most attacks have a score of 10. (optional, default 30)
THRESHOLD=30

# Block attackers for initially BLOCK_TIME seconds after exceeding THRESHOLD.
# Subsequent blocks increase by a factor of 1.5. (optional, default 120)
BLOCK_TIME=120

# Remember potential attackers for up to DETECTION_TIME seconds before
# resetting their score. (optional, default 1800)
DETECTION_TIME=1800

# Size of IPv6 'subnet to block. Defaults to a single address, CIDR notation. (optional, default to 128)
IPV6_SUBNET=128

# Size of IPv4 subnet to block. Defaults to a single address, CIDR notation. (optional, default to 32)
IPV4_SUBNET=32

#### EXTRAS ####
# !! Warning: These features may not work correctly with sandboxing. !!

# Full path to PID file (optional, no default)
PID_FILE="/run/sshguard.pid"

# Colon-separated blacklist threshold and full path to blacklist file.
# (optional, no default)
BLACKLIST_FILE="90:/var/lib/sshguard/db/blacklist.db"

# IP addresses listed in the WHITELIST_FILE are considered to be
# friendlies and will never be blocked.
WHITELIST_FILE="/etc/sshguard/whitelist"