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89 lines
2.8 KiB
Plaintext
89 lines
2.8 KiB
Plaintext
## Version 2022/08/06
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# Fail2Ban configuration file
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#
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# Author: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
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#
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# Modified: Alexander Koeppe <format_c@online.de>, Serg G. Brester <serg.brester@sebres.de>
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# made config file IPv6 capable
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[INCLUDES]
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before = iptables.conf
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[Definition]
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_ipt_chain_rule = -m recent --update --seconds 3600 --name <iptname> -j <blocktype>
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_ipt_for_proto-iter =
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_ipt_for_proto-done =
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# Option: actionstart
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# Notes.: command executed on demand at the first ban (or at the start of Fail2Ban if actionstart_on_demand is set to false).
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# Values: CMD
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#
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# Changing iptables rules requires root privileges. If fail2ban is
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# configured to run as root, firewall setup can be performed by
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# fail2ban automatically. However, if fail2ban is configured to run as
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# a normal user, the configuration must be done by some other means
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# (e.g. using static firewall configuration with the
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# iptables-persistent package).
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#
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# Explanation of the rule below:
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# Check if any packets coming from an IP on the <iptname>
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# list have been seen in the last 3600 seconds. If yes, update the
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# timestamp for this IP and drop the packet. If not, let the packet
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# through.
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#
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# Fail2ban inserts blacklisted hosts into the <iptname> list
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# and removes them from the list after some time, according to its
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# own rules. The 3600 second timeout is independent and acts as a
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# safeguard in case the fail2ban process dies unexpectedly. The
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# shorter of the two timeouts actually matters.
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actionstart = if [ `id -u` -eq 0 ];then
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{ %(_ipt_check_rule)s >/dev/null 2>&1; } || { <iptables> -I <chain> %(_ipt_chain_rule)s; }
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fi
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# Option: actionflush
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#
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# [TODO] Flushing is currently not implemented for xt_recent
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#
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actionflush =
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# Option: actionstop
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# Notes.: command executed at the stop of jail (or at the end of Fail2Ban)
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# Values: CMD
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#
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actionstop = echo / > /proc/net/xt_recent/<iptname>
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if [ `id -u` -eq 0 ];then
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<iptables> -D <chain> %(_ipt_chain_rule)s;
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fi
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# Option: actioncheck
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# Notes.: command executed as invariant check (error by ban)
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# Values: CMD
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#
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actioncheck = { <iptables> -C <chain> %(_ipt_chain_rule)s; } && test -e /proc/net/xt_recent/<iptname>
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# Option: actionban
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# Notes.: command executed when banning an IP. Take care that the
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# command is executed with Fail2Ban user rights.
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# Tags: See jail.conf(5) man page
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# Values: CMD
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#
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actionban = echo +<ip> > /proc/net/xt_recent/<iptname>
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# Option: actionunban
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# Notes.: command executed when unbanning an IP. Take care that the
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# command is executed with Fail2Ban user rights.
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# Tags: See jail.conf(5) man page
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# Values: CMD
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#
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actionunban = echo -<ip> > /proc/net/xt_recent/<iptname>
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[Init]
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iptname = f2b-<name>
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[Init?family=inet6]
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iptname = f2b-<name>6
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