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77 lines
2.3 KiB
Plaintext
77 lines
2.3 KiB
Plaintext
## Version 2022/08/06
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# Fail2Ban action configuration file for ufw
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#
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# You are required to run "ufw enable" before this will have any effect.
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#
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# The insert position should be appropriate to block the required traffic.
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# A number after an allow rule to the application won't be of much use.
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[Definition]
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actionstart =
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actionstop =
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actioncheck =
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# ufw does "quickly process packets for which we already have a connection" in before.rules,
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# therefore all related sockets should be closed
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# actionban is using `ss` to do so, this only handles IPv4 and IPv6.
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actionban = if [ -n "<application>" ] && ufw app info "<application>"
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then
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ufw <add> <blocktype> from <ip> to <destination> app "<application>" comment "<comment>"
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else
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ufw <add> <blocktype> from <ip> to <destination> comment "<comment>"
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fi
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<kill>
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actionunban = if [ -n "<application>" ] && ufw app info "<application>"
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then
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ufw delete <blocktype> from <ip> to <destination> app "<application>"
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else
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ufw delete <blocktype> from <ip> to <destination>
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fi
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# Option: kill-mode
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# Notes.: can be set to ss or conntrack (may be extended later with other modes) to immediately drop all connections from banned IP, default empty (no kill)
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# Example: banaction = ufw[kill-mode=ss]
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kill-mode =
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# intern conditional parameter used to provide killing mode after ban:
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_kill_ =
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_kill_ss = ss -K dst "[<ip>]"
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_kill_conntrack = conntrack -D -s "<ip>"
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# Option: kill
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# Notes.: can be used to specify custom killing feature, by default depending on option kill-mode
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# Examples: banaction = ufw[kill='ss -K "( sport = :http || sport = :https )" dst "[<ip>]"']
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# banaction = ufw[kill='cutter "<ip>"']
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kill = <_kill_<kill-mode>>
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[Init]
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# Option: add
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# Notes.: can be set to "insert 1" to insert a rule at certain position (here 1):
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add = prepend
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# Option: blocktype
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# Notes.: reject or deny
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blocktype = reject
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# Option: destination
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# Notes.: The destination address to block in the ufw rule
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destination = any
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# Option: application
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# Notes.: application from sudo ufw app list
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application =
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# Option: comment
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# Notes.: comment for rule added by fail2ban
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comment = by Fail2Ban after <failures> attempts against <name>
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# DEV NOTES:
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#
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# Author: Guilhem Lettron
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# Enhancements: Daniel Black
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