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etc: Add fail2ban filter configuration example

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This patch adds a fail2ban filter configuration example for chasquid.

It can be used to configure fail2ban to detect IPs causing connection
churn or high rate of errors.
This commit is contained in:
Alberto Bertogli
2024-11-17 10:25:58 +00:00
parent 41bb7b6f5e
commit 9dab8f4f04
1 changed files with 11 additions and 0 deletions
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11
etc/fail2ban/filter.d/chasquid.conf Normal file
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# fail2ban filter config for chasquid SMTP server.
[INCLUDES]
before = common.conf
[Definition]
# Identify addresses that triggered an SMTP connection error.
failregex = SMTP.Conn <ADDR>:\d+: error:
[Init]
journalmatch = _SYSTEMD_UNIT=chasquid.service