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avoid a runaway /64 in jail.conf

This commit is contained in:
KiekerJan 2021-10-25 16:44:25 +02:00
parent ac24421cc3
commit be899f2b9e
2 changed files with 9 additions and 2 deletions
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2
conf/fail2ban/jails.conf
View File

@ -5,7 +5,7 @@
# Whitelist our own IP addresses. 127.0.0.1/8 is the default. But our status checks
# ping services over the public interface so we should whitelist that address of
# ours too. The string is substituted during installation.
ignoreip = 127.0.0.1/8 ::1/128 PUBLIC_IP PUBLIC_IPV6/64 ADMIN_HOME_IP ADMIN_HOME_IPV6/64
ignoreip = 127.0.0.1/8 ::1/128 PUBLIC_IP PUBLIC_IPV6/64 ADMIN_HOME_IP ADMIN_HOME_IPV6
bantime = 15m
findtime = 120m
maxretry = 4

9
setup/system.sh
View File

@ -346,10 +346,17 @@ systemctl restart systemd-resolved
# Configure the Fail2Ban installation to prevent dumb bruce-force attacks against dovecot, postfix, ssh, etc.
rm -f /etc/fail2ban/jail.local # we used to use this file but don't anymore
rm -f /etc/fail2ban/jail.d/defaults-debian.conf # removes default config so we can manage all of fail2ban rules in one config
if [ ! -z "$ADMIN_HOME_IPV6" ]; then
ADMIN_HOME_IPV6_FB="${ADMIN_HOME_IPV6}/64"
else
ADMIN_HOME_IPV6_FB=""
fi
cat conf/fail2ban/jails.conf \
| sed "s/PUBLIC_IPV6/$PUBLIC_IPV6/g" \
| sed "s/PUBLIC_IP/$PUBLIC_IP/g" \
| sed "s/ADMIN_HOME_IPV6/$ADMIN_HOME_IPV6/g" \
| sed "s/ADMIN_HOME_IPV6/$ADMIN_HOME_IPV6_FB/g" \
| sed "s/ADMIN_HOME_IP/$ADMIN_HOME_IP/g" \
| sed "s#STORAGE_ROOT#$STORAGE_ROOT#" \
> /etc/fail2ban/jail.d/00-mailinabox.conf