55 lines
2.3 KiB
YAML
55 lines
2.3 KiB
YAML
---
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# definitions are just a place to put chunks of conf you want to reuse in another place
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# they're not readed by reaction
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definitions:
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- &iptablesban [ "iptables" "-w" "-A" "reaction" "1" "-s" "<ip>" "-j" "DROP" ]
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- &iptablesunban [ "iptables" "-w" "-D" "reaction" "1" "-s" "<ip>" "-j" "DROP" ]
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# patterns are substitued in regexes.
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# when a filter performs an action, it replaces the found pattern
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patterns:
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ip:
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# reaction regex syntax is defined here: https://github.com/google/re2/wiki/Syntax
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regex: '(?:(?:[0-9]{1,3}\.){3}[0-9]{1,3})|(?:[0-9a-fA-F:]{2,90})'
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ignore:
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- 127.0.0.1
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- ::1
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# streams are command that are run
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# their output will be used by one or more filters
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streams:
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# streams have a user-defined name
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ssh:
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# note that if the command is not in environment's `PATH`
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# its full path must be given.
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cmd: [ "journalctl" "-fu" "sshd.service" ]
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# filters are a set of regexes on a stream
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# when a regex matches, it will trigger the filter's actions
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filters:
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# filters have a user-defined name
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failedlogin:
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# reaction regex syntax is defined here: https://github.com/google/re2/wiki/Syntax
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regex:
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- authentication failure;.*rhost=<ip>
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# if retry and retry-period are defined,
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# the actions will only take place if a same pattern is
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# found `retry` times in a `retry-period` interval
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retry: 3
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# format is defined here: https://pkg.go.dev/time#ParseDuration
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retry-period: 6h
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actions:
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# actions have a user-defined name
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ban:
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# YAML substitutes *reference by the value at &reference
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cmd: *iptablesban
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unban:
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cmd: *iptablesunban
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# if after is defined, the action will not take place immediately, but after a specified duration.
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# same format as retry-period
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after: 48h
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# let's say reaction is quitting. does it run all those pending commands which had an `after` duration set?
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# if you want reaction to run those pending commands before exiting, you can set this:
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# onexit: true
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# (defaults to false)
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# here it is not useful because we will flush the chain containing the bans anyway (see ./reaction.service)
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