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120 lines
3.6 KiB
120 lines
3.6 KiB
# Fail2Ban configuration file
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#
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# Author: Daniel Black
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# Author: Cyril Jaquier
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# Modified: Yaroslav O. Halchenko <debian@onerussian.com>
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# made active on all ports from original iptables.conf
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# Modified: Alexander Belykh <albel727@ngs.ru>
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# adapted for nftables
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#
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# This is a included configuration file and includes the definitions for the nftables
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# used in all nftables based actions by default.
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#
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# The user can override the defaults in nftables-common.local
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[INCLUDES]
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after = nftables-common.local
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[Definition]
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# Option: nftables_mode
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# Notes.: additional expressions for nftables filter rule
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# Values: nftables expressions
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#
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nftables_mode = <protocol> dport \{ <port> \}
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# Option: actionstart
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# Notes.: command executed once at the start of Fail2Ban.
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# Values: CMD
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#
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actionstart = <nftables> add set <nftables_family> <nftables_table> f2b-<name> \{ type <nftables_type>\; \}
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<nftables> insert rule <nftables_family> <nftables_table> <chain> %(nftables_mode)s ip saddr @f2b-<name> <blocktype>
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_nft_list = <nftables> --handle --numeric list chain <nftables_family> <nftables_table> <chain>
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_nft_get_handle_id = grep -m1 'ip saddr @f2b-<name> <blocktype> # handle' | grep -oe ' handle [0-9]*'
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# Option: actionstop
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# Notes.: command executed once at the end of Fail2Ban
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# Values: CMD
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#
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actionstop = HANDLE_ID=$(%(_nft_list)s | %(_nft_get_handle_id)s)
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<nftables> delete rule <nftables_family> <nftables_table> <chain> $HANDLE_ID
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<nftables> delete set <nftables_family> <nftables_table> f2b-<name>
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# Option: actioncheck
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# Notes.: command executed once before each actionban command
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# Values: CMD
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#
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actioncheck = <nftables> list chain <nftables_family> <nftables_table> <chain> | grep -q '@f2b-<name>[ \t]'
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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 = <nftables> add element <nftables_family> <nftables_table> f2b-<name> \{ <ip> \}
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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 = <nftables> delete element <nftables_family> <nftables_table> f2b-<name> \{ <ip> \}
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[Init]
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# Option: nftables_type
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# Notes.: address type to work with
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# Values: [ipv4_addr | ipv6_addr] Default: ipv4_addr
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#
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nftables_type = ipv4_addr
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# Option: nftables_family
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# Notes.: address family to work in
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# Values: [ip | ip6 | inet] Default: inet
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#
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nftables_family = inet
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# Option: nftables_table
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# Notes.: table in the address family to work in
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# Values: STRING Default: filter
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#
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nftables_table = filter
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# Option: chain
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# Notes specifies the nftables chain to which the Fail2Ban rules should be
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# added
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# Values: STRING Default: input
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chain = input
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# Default name of the filtering set
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#
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name = default
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# Option: port
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# Notes.: specifies port to monitor
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# Values: [ NUM | STRING ] Default:
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#
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port = ssh
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# Option: protocol
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# Notes.: internally used by config reader for interpolations.
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# Values: [ tcp | udp ] Default: tcp
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#
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protocol = tcp
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# Option: blocktype
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# Note: This is what the action does with rules. This can be any jump target
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# as per the nftables man page (section 8). Common values are drop
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# reject, reject with icmp type host-unreachable
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# Values: STRING
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blocktype = reject
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# Option: nftables
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# Notes.: Actual command to be executed, including common to all calls options
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# Values: STRING
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nftables = nft
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