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Merge pull request #2703 from sebres/0.10-ipset-tout 

0.10 / ipset timeout removal
pull/2603/head
Sergey G. Brester 2020-04-26 12:39:37 +02:00 committed by GitHub
parent 6b90ca820f da1652d0d7
commit fe84b158a5
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 83 additions and 51 deletions
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2
ChangeLog
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@ -44,6 +44,8 @@ ver. 0.10.6-dev (20??/??/??) - development edition
* ensure we've unique action name per jail (also if parameter `actname` is not set but name deviates from standard name, gh-2686) * ensure we've unique action name per jail (also if parameter `actname` is not set but name deviates from standard name, gh-2686)
* don't use `%(banaction)s` interpolation because it can be complex value (containing `[...]` and/or quotes), * don't use `%(banaction)s` interpolation because it can be complex value (containing `[...]` and/or quotes),
so would bother the action interpolation so would bother the action interpolation
* `action.d/*-ipset*.conf`: several ipset actions fixed (no timeout per default anymore), so no discrepancy
between ipset and fail2ban (removal from ipset will be managed by fail2ban only, gh-2703)
* `filter.d/common.conf`: avoid substitute of default values in related `lt_*` section, `__prefix_line` * `filter.d/common.conf`: avoid substitute of default values in related `lt_*` section, `__prefix_line`
should be interpolated in definition section (inside the filter-config, gh-2650) should be interpolated in definition section (inside the filter-config, gh-2650)
* `filter.d/courier-smtp.conf`: prefregex extended to consider port in log-message (gh-2697) * `filter.d/courier-smtp.conf`: prefregex extended to consider port in log-message (gh-2697)

22
config/action.d/firewallcmd-ipset.conf
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@ -18,7 +18,7 @@ before = firewallcmd-common.conf
[Definition] [Definition]
actionstart = ipset create <ipmset> hash:ip timeout <bantime><familyopt> actionstart = ipset create <ipmset> hash:ip timeout <default-timeout> <familyopt>
firewall-cmd --direct --add-rule <family> filter <chain> 0 <actiontype> -m set --match-set <ipmset> src -j <blocktype> firewall-cmd --direct --add-rule <family> filter <chain> 0 <actiontype> -m set --match-set <ipmset> src -j <blocktype>
actionflush = ipset flush <ipmset> actionflush = ipset flush <ipmset>
@ -27,7 +27,7 @@ actionstop = firewall-cmd --direct --remove-rule <family> filter <chain> 0 <acti
<actionflush> <actionflush>
ipset destroy <ipmset> ipset destroy <ipmset>
actionban = ipset add <ipmset> <ip> timeout <bantime> -exist actionban = ipset add <ipmset> <ip> timeout <timeout> -exist
actionunban = ipset del <ipmset> <ip> -exist actionunban = ipset del <ipmset> <ip> -exist
@ -40,11 +40,19 @@ actionunban = ipset del <ipmset> <ip> -exist
# #
chain = INPUT_direct chain = INPUT_direct
# Option: bantime # Option: default-timeout
# Notes: specifies the bantime in seconds (handled internally rather than by fail2ban) # Notes: specifies default timeout in seconds (handled default ipset timeout only)
# Values: [ NUM ] Default: 600 # Values: [ NUM ] Default: 0 (no timeout, managed by fail2ban by unban)
default-timeout = 0
bantime = 600 # Option: timeout
# Notes: specifies ticket timeout (handled ipset timeout only)
# Values: [ NUM ] Default: 0 (managed by fail2ban by unban)
timeout = 0
# expresion to caclulate timeout from bantime, example:
# banaction = %(known/banaction)s[timeout='<timeout-bantime>']
timeout-bantime = $([ "<bantime>" -le 2147483 ] && echo "<bantime>" || echo 0)
# Option: actiontype # Option: actiontype
# Notes.: defines additions to the blocking rule # Notes.: defines additions to the blocking rule
@ -69,7 +77,7 @@ familyopt =
[Init?family=inet6] [Init?family=inet6]
ipmset = f2b-<name>6 ipmset = f2b-<name>6
familyopt = <sp>family inet6 familyopt = family inet6
# DEV NOTES: # DEV NOTES:

24
config/action.d/iptables-ipset-proto6-allports.conf
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@ -26,7 +26,7 @@ before = iptables-common.conf
# Notes.: command executed on demand at the first ban (or at the start of Fail2Ban if actionstart_on_demand is set to false). # Notes.: command executed on demand at the first ban (or at the start of Fail2Ban if actionstart_on_demand is set to false).
# Values: CMD # Values: CMD
# #
actionstart = ipset create <ipmset> hash:ip timeout <bantime><familyopt> actionstart = ipset create <ipmset> hash:ip timeout <default-timeout> <familyopt>
<iptables> -I <chain> -m set --match-set <ipmset> src -j <blocktype> <iptables> -I <chain> -m set --match-set <ipmset> src -j <blocktype>
# Option: actionflush # Option: actionflush
@ -49,7 +49,7 @@ actionstop = <iptables> -D <chain> -m set --match-set <ipmset> src -j <blocktype
# Tags: See jail.conf(5) man page # Tags: See jail.conf(5) man page
# Values: CMD # Values: CMD
# #
actionban = ipset add <ipmset> <ip> timeout <bantime> -exist actionban = ipset add <ipmset> <ip> timeout <timeout> -exist
# Option: actionunban # Option: actionunban
# Notes.: command executed when unbanning an IP. Take care that the # Notes.: command executed when unbanning an IP. Take care that the
@ -61,11 +61,19 @@ actionunban = ipset del <ipmset> <ip> -exist
[Init] [Init]
# Option: bantime # Option: default-timeout
# Notes: specifies the bantime in seconds (handled internally rather than by fail2ban) # Notes: specifies default timeout in seconds (handled default ipset timeout only)
# Values: [ NUM ] Default: 600 # Values: [ NUM ] Default: 0 (no timeout, managed by fail2ban by unban)
# default-timeout = 0
bantime = 600
# Option: timeout
# Notes: specifies ticket timeout (handled ipset timeout only)
# Values: [ NUM ] Default: 0 (managed by fail2ban by unban)
timeout = 0
# expresion to caclulate timeout from bantime, example:
# banaction = %(known/banaction)s[timeout='<timeout-bantime>']
timeout-bantime = $([ "<bantime>" -le 2147483 ] && echo "<bantime>" || echo 0)
ipmset = f2b-<name> ipmset = f2b-<name>
familyopt = familyopt =
@ -74,4 +82,4 @@ familyopt =
[Init?family=inet6] [Init?family=inet6]
ipmset = f2b-<name>6 ipmset = f2b-<name>6
familyopt = <sp>family inet6 familyopt = family inet6

24
config/action.d/iptables-ipset-proto6.conf
View File

@ -26,7 +26,7 @@ before = iptables-common.conf
# Notes.: command executed on demand at the first ban (or at the start of Fail2Ban if actionstart_on_demand is set to false). # Notes.: command executed on demand at the first ban (or at the start of Fail2Ban if actionstart_on_demand is set to false).
# Values: CMD # Values: CMD
# #
actionstart = ipset create <ipmset> hash:ip timeout <bantime><familyopt> actionstart = ipset create <ipmset> hash:ip timeout <default-timeout> <familyopt>
<iptables> -I <chain> -p <protocol> -m multiport --dports <port> -m set --match-set <ipmset> src -j <blocktype> <iptables> -I <chain> -p <protocol> -m multiport --dports <port> -m set --match-set <ipmset> src -j <blocktype>
# Option: actionflush # Option: actionflush
@ -49,7 +49,7 @@ actionstop = <iptables> -D <chain> -p <protocol> -m multiport --dports <port> -m
# Tags: See jail.conf(5) man page # Tags: See jail.conf(5) man page
# Values: CMD # Values: CMD
# #
actionban = ipset add <ipmset> <ip> timeout <bantime> -exist actionban = ipset add <ipmset> <ip> timeout <timeout> -exist
# Option: actionunban # Option: actionunban
# Notes.: command executed when unbanning an IP. Take care that the # Notes.: command executed when unbanning an IP. Take care that the
@ -61,11 +61,19 @@ actionunban = ipset del <ipmset> <ip> -exist
[Init] [Init]
# Option: bantime # Option: default-timeout
# Notes: specifies the bantime in seconds (handled internally rather than by fail2ban) # Notes: specifies default timeout in seconds (handled default ipset timeout only)
# Values: [ NUM ] Default: 600 # Values: [ NUM ] Default: 0 (no timeout, managed by fail2ban by unban)
# default-timeout = 0
bantime = 600
# Option: timeout
# Notes: specifies ticket timeout (handled ipset timeout only)
# Values: [ NUM ] Default: 0 (managed by fail2ban by unban)
timeout = 0
# expresion to caclulate timeout from bantime, example:
# banaction = %(known/banaction)s[timeout='<timeout-bantime>']
timeout-bantime = $([ "<bantime>" -le 2147483 ] && echo "<bantime>" || echo 0)
ipmset = f2b-<name> ipmset = f2b-<name>
familyopt = familyopt =
@ -74,4 +82,4 @@ familyopt =
[Init?family=inet6] [Init?family=inet6]
ipmset = f2b-<name>6 ipmset = f2b-<name>6
familyopt = <sp>family inet6 familyopt = family inet6

22
config/action.d/shorewall-ipset-proto6.conf
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@ -51,7 +51,7 @@
# Values: CMD # Values: CMD
# #
actionstart = if ! ipset -quiet -name list f2b-<name> >/dev/null; actionstart = if ! ipset -quiet -name list f2b-<name> >/dev/null;
then ipset -quiet -exist create f2b-<name> hash:ip timeout <bantime>; then ipset -quiet -exist create f2b-<name> hash:ip timeout <default-timeout>;
fi fi
# Option: actionstop # Option: actionstop
@ -66,7 +66,7 @@ actionstop = ipset flush f2b-<name>
# Tags: See jail.conf(5) man page # Tags: See jail.conf(5) man page
# Values: CMD # Values: CMD
# #
actionban = ipset add f2b-<name> <ip> timeout <bantime> -exist actionban = ipset add f2b-<name> <ip> timeout <timeout> -exist
# Option: actionunban # Option: actionunban
# Notes.: command executed when unbanning an IP. Take care that the # Notes.: command executed when unbanning an IP. Take care that the
@ -76,10 +76,16 @@ actionban = ipset add f2b-<name> <ip> timeout <bantime> -exist
# #
actionunban = ipset del f2b-<name> <ip> -exist actionunban = ipset del f2b-<name> <ip> -exist
[Init] # Option: default-timeout
# Notes: specifies default timeout in seconds (handled default ipset timeout only)
# Values: [ NUM ] Default: 0 (no timeout, managed by fail2ban by unban)
default-timeout = 0
# Option: bantime # Option: timeout
# Notes: specifies the bantime in seconds (handled internally rather than by fail2ban) # Notes: specifies ticket timeout (handled ipset timeout only)
# Values: [ NUM ] Default: 600 # Values: [ NUM ] Default: 0 (managed by fail2ban by unban)
# timeout = 0
bantime = 600
# expresion to caclulate timeout from bantime, example:
# banaction = %(known/banaction)s[timeout='<timeout-bantime>']
timeout-bantime = $([ "<bantime>" -le 2147483 ] && echo "<bantime>" || echo 0)

40
fail2ban/tests/servertestcase.py
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@ -1509,14 +1509,14 @@ class ServerConfigReaderTests(LogCaptureTestCase):
), ),
}), }),
# iptables-ipset-proto6 -- # iptables-ipset-proto6 --
('j-w-iptables-ipset', 'iptables-ipset-proto6[name=%(__name__)s, bantime="10m", port="http", protocol="tcp", chain="<known/chain>"]', { ('j-w-iptables-ipset', 'iptables-ipset-proto6[name=%(__name__)s, port="http", protocol="tcp", chain="<known/chain>"]', {
'ip4': (' f2b-j-w-iptables-ipset ',), 'ip6': (' f2b-j-w-iptables-ipset6 ',), 'ip4': (' f2b-j-w-iptables-ipset ',), 'ip6': (' f2b-j-w-iptables-ipset6 ',),
'ip4-start': ( 'ip4-start': (
"`ipset create f2b-j-w-iptables-ipset hash:ip timeout 600`", "`ipset create f2b-j-w-iptables-ipset hash:ip timeout 0 `",
"`iptables -w -I INPUT -p tcp -m multiport --dports http -m set --match-set f2b-j-w-iptables-ipset src -j REJECT --reject-with icmp-port-unreachable`", "`iptables -w -I INPUT -p tcp -m multiport --dports http -m set --match-set f2b-j-w-iptables-ipset src -j REJECT --reject-with icmp-port-unreachable`",
), ),
'ip6-start': ( 'ip6-start': (
"`ipset create f2b-j-w-iptables-ipset6 hash:ip timeout 600 family inet6`", "`ipset create f2b-j-w-iptables-ipset6 hash:ip timeout 0 family inet6`",
"`ip6tables -w -I INPUT -p tcp -m multiport --dports http -m set --match-set f2b-j-w-iptables-ipset6 src -j REJECT --reject-with icmp6-port-unreachable`", "`ip6tables -w -I INPUT -p tcp -m multiport --dports http -m set --match-set f2b-j-w-iptables-ipset6 src -j REJECT --reject-with icmp6-port-unreachable`",
), ),
'flush': ( 'flush': (
@ -1532,27 +1532,27 @@ class ServerConfigReaderTests(LogCaptureTestCase):
"`ipset destroy f2b-j-w-iptables-ipset6`", "`ipset destroy f2b-j-w-iptables-ipset6`",
), ),
'ip4-ban': ( 'ip4-ban': (
r"`ipset add f2b-j-w-iptables-ipset 192.0.2.1 timeout 600 -exist`", r"`ipset add f2b-j-w-iptables-ipset 192.0.2.1 timeout 0 -exist`",
), ),
'ip4-unban': ( 'ip4-unban': (
r"`ipset del f2b-j-w-iptables-ipset 192.0.2.1 -exist`", r"`ipset del f2b-j-w-iptables-ipset 192.0.2.1 -exist`",
), ),
'ip6-ban': ( 'ip6-ban': (
r"`ipset add f2b-j-w-iptables-ipset6 2001:db8:: timeout 600 -exist`", r"`ipset add f2b-j-w-iptables-ipset6 2001:db8:: timeout 0 -exist`",
), ),
'ip6-unban': ( 'ip6-unban': (
r"`ipset del f2b-j-w-iptables-ipset6 2001:db8:: -exist`", r"`ipset del f2b-j-w-iptables-ipset6 2001:db8:: -exist`",
), ),
}), }),
# iptables-ipset-proto6-allports -- # iptables-ipset-proto6-allports --
('j-w-iptables-ipset-ap', 'iptables-ipset-proto6-allports[name=%(__name__)s, bantime="10m", chain="<known/chain>"]', { ('j-w-iptables-ipset-ap', 'iptables-ipset-proto6-allports[name=%(__name__)s, chain="<known/chain>"]', {
'ip4': (' f2b-j-w-iptables-ipset-ap ',), 'ip6': (' f2b-j-w-iptables-ipset-ap6 ',), 'ip4': (' f2b-j-w-iptables-ipset-ap ',), 'ip6': (' f2b-j-w-iptables-ipset-ap6 ',),
'ip4-start': ( 'ip4-start': (
"`ipset create f2b-j-w-iptables-ipset-ap hash:ip timeout 600`", "`ipset create f2b-j-w-iptables-ipset-ap hash:ip timeout 0 `",
"`iptables -w -I INPUT -m set --match-set f2b-j-w-iptables-ipset-ap src -j REJECT --reject-with icmp-port-unreachable`", "`iptables -w -I INPUT -m set --match-set f2b-j-w-iptables-ipset-ap src -j REJECT --reject-with icmp-port-unreachable`",
), ),
'ip6-start': ( 'ip6-start': (
"`ipset create f2b-j-w-iptables-ipset-ap6 hash:ip timeout 600 family inet6`", "`ipset create f2b-j-w-iptables-ipset-ap6 hash:ip timeout 0 family inet6`",
"`ip6tables -w -I INPUT -m set --match-set f2b-j-w-iptables-ipset-ap6 src -j REJECT --reject-with icmp6-port-unreachable`", "`ip6tables -w -I INPUT -m set --match-set f2b-j-w-iptables-ipset-ap6 src -j REJECT --reject-with icmp6-port-unreachable`",
), ),
'flush': ( 'flush': (
@ -1568,13 +1568,13 @@ class ServerConfigReaderTests(LogCaptureTestCase):
"`ipset destroy f2b-j-w-iptables-ipset-ap6`", "`ipset destroy f2b-j-w-iptables-ipset-ap6`",
), ),
'ip4-ban': ( 'ip4-ban': (
r"`ipset add f2b-j-w-iptables-ipset-ap 192.0.2.1 timeout 600 -exist`", r"`ipset add f2b-j-w-iptables-ipset-ap 192.0.2.1 timeout 0 -exist`",
), ),
'ip4-unban': ( 'ip4-unban': (
r"`ipset del f2b-j-w-iptables-ipset-ap 192.0.2.1 -exist`", r"`ipset del f2b-j-w-iptables-ipset-ap 192.0.2.1 -exist`",
), ),
'ip6-ban': ( 'ip6-ban': (
r"`ipset add f2b-j-w-iptables-ipset-ap6 2001:db8:: timeout 600 -exist`", r"`ipset add f2b-j-w-iptables-ipset-ap6 2001:db8:: timeout 0 -exist`",
), ),
'ip6-unban': ( 'ip6-unban': (
r"`ipset del f2b-j-w-iptables-ipset-ap6 2001:db8:: -exist`", r"`ipset del f2b-j-w-iptables-ipset-ap6 2001:db8:: -exist`",
@ -1852,14 +1852,14 @@ class ServerConfigReaderTests(LogCaptureTestCase):
), ),
}), }),
# firewallcmd-ipset (multiport) -- # firewallcmd-ipset (multiport) --
('j-w-fwcmd-ipset', 'firewallcmd-ipset[name=%(__name__)s, bantime="10m", port="http", protocol="tcp", chain="<known/chain>"]', { ('j-w-fwcmd-ipset', 'firewallcmd-ipset[name=%(__name__)s, port="http", protocol="tcp", chain="<known/chain>"]', {
'ip4': (' f2b-j-w-fwcmd-ipset ',), 'ip6': (' f2b-j-w-fwcmd-ipset6 ',), 'ip4': (' f2b-j-w-fwcmd-ipset ',), 'ip6': (' f2b-j-w-fwcmd-ipset6 ',),
'ip4-start': ( 'ip4-start': (
"`ipset create f2b-j-w-fwcmd-ipset hash:ip timeout 600`", "`ipset create f2b-j-w-fwcmd-ipset hash:ip timeout 0 `",
"`firewall-cmd --direct --add-rule ipv4 filter INPUT_direct 0 -p tcp -m multiport --dports http -m set --match-set f2b-j-w-fwcmd-ipset src -j REJECT --reject-with icmp-port-unreachable`", "`firewall-cmd --direct --add-rule ipv4 filter INPUT_direct 0 -p tcp -m multiport --dports http -m set --match-set f2b-j-w-fwcmd-ipset src -j REJECT --reject-with icmp-port-unreachable`",
), ),
'ip6-start': ( 'ip6-start': (
"`ipset create f2b-j-w-fwcmd-ipset6 hash:ip timeout 600 family inet6`", "`ipset create f2b-j-w-fwcmd-ipset6 hash:ip timeout 0 family inet6`",
"`firewall-cmd --direct --add-rule ipv6 filter INPUT_direct 0 -p tcp -m multiport --dports http -m set --match-set f2b-j-w-fwcmd-ipset6 src -j REJECT --reject-with icmp6-port-unreachable`", "`firewall-cmd --direct --add-rule ipv6 filter INPUT_direct 0 -p tcp -m multiport --dports http -m set --match-set f2b-j-w-fwcmd-ipset6 src -j REJECT --reject-with icmp6-port-unreachable`",
), ),
'flush': ( 'flush': (
@ -1875,27 +1875,27 @@ class ServerConfigReaderTests(LogCaptureTestCase):
"`ipset destroy f2b-j-w-fwcmd-ipset6`", "`ipset destroy f2b-j-w-fwcmd-ipset6`",
), ),
'ip4-ban': ( 'ip4-ban': (
r"`ipset add f2b-j-w-fwcmd-ipset 192.0.2.1 timeout 600 -exist`", r"`ipset add f2b-j-w-fwcmd-ipset 192.0.2.1 timeout 0 -exist`",
), ),
'ip4-unban': ( 'ip4-unban': (
r"`ipset del f2b-j-w-fwcmd-ipset 192.0.2.1 -exist`", r"`ipset del f2b-j-w-fwcmd-ipset 192.0.2.1 -exist`",
), ),
'ip6-ban': ( 'ip6-ban': (
r"`ipset add f2b-j-w-fwcmd-ipset6 2001:db8:: timeout 600 -exist`", r"`ipset add f2b-j-w-fwcmd-ipset6 2001:db8:: timeout 0 -exist`",
), ),
'ip6-unban': ( 'ip6-unban': (
r"`ipset del f2b-j-w-fwcmd-ipset6 2001:db8:: -exist`", r"`ipset del f2b-j-w-fwcmd-ipset6 2001:db8:: -exist`",
), ),
}), }),
# firewallcmd-ipset (allports) -- # firewallcmd-ipset (allports) --
('j-w-fwcmd-ipset-ap', 'firewallcmd-ipset[name=%(__name__)s, bantime="10m", actiontype=<allports>, protocol="tcp", chain="<known/chain>"]', { ('j-w-fwcmd-ipset-ap', 'firewallcmd-ipset[name=%(__name__)s, actiontype=<allports>, protocol="tcp", chain="<known/chain>"]', {
'ip4': (' f2b-j-w-fwcmd-ipset-ap ',), 'ip6': (' f2b-j-w-fwcmd-ipset-ap6 ',), 'ip4': (' f2b-j-w-fwcmd-ipset-ap ',), 'ip6': (' f2b-j-w-fwcmd-ipset-ap6 ',),
'ip4-start': ( 'ip4-start': (
"`ipset create f2b-j-w-fwcmd-ipset-ap hash:ip timeout 600`", "`ipset create f2b-j-w-fwcmd-ipset-ap hash:ip timeout 0 `",
"`firewall-cmd --direct --add-rule ipv4 filter INPUT_direct 0 -p tcp -m set --match-set f2b-j-w-fwcmd-ipset-ap src -j REJECT --reject-with icmp-port-unreachable`", "`firewall-cmd --direct --add-rule ipv4 filter INPUT_direct 0 -p tcp -m set --match-set f2b-j-w-fwcmd-ipset-ap src -j REJECT --reject-with icmp-port-unreachable`",
), ),
'ip6-start': ( 'ip6-start': (
"`ipset create f2b-j-w-fwcmd-ipset-ap6 hash:ip timeout 600 family inet6`", "`ipset create f2b-j-w-fwcmd-ipset-ap6 hash:ip timeout 0 family inet6`",
"`firewall-cmd --direct --add-rule ipv6 filter INPUT_direct 0 -p tcp -m set --match-set f2b-j-w-fwcmd-ipset-ap6 src -j REJECT --reject-with icmp6-port-unreachable`", "`firewall-cmd --direct --add-rule ipv6 filter INPUT_direct 0 -p tcp -m set --match-set f2b-j-w-fwcmd-ipset-ap6 src -j REJECT --reject-with icmp6-port-unreachable`",
), ),
'flush': ( 'flush': (
@ -1911,13 +1911,13 @@ class ServerConfigReaderTests(LogCaptureTestCase):
"`ipset destroy f2b-j-w-fwcmd-ipset-ap6`", "`ipset destroy f2b-j-w-fwcmd-ipset-ap6`",
), ),
'ip4-ban': ( 'ip4-ban': (
r"`ipset add f2b-j-w-fwcmd-ipset-ap 192.0.2.1 timeout 600 -exist`", r"`ipset add f2b-j-w-fwcmd-ipset-ap 192.0.2.1 timeout 0 -exist`",
), ),
'ip4-unban': ( 'ip4-unban': (
r"`ipset del f2b-j-w-fwcmd-ipset-ap 192.0.2.1 -exist`", r"`ipset del f2b-j-w-fwcmd-ipset-ap 192.0.2.1 -exist`",
), ),
'ip6-ban': ( 'ip6-ban': (
r"`ipset add f2b-j-w-fwcmd-ipset-ap6 2001:db8:: timeout 600 -exist`", r"`ipset add f2b-j-w-fwcmd-ipset-ap6 2001:db8:: timeout 0 -exist`",
), ),
'ip6-unban': ( 'ip6-unban': (
r"`ipset del f2b-j-w-fwcmd-ipset-ap6 2001:db8:: -exist`", r"`ipset del f2b-j-w-fwcmd-ipset-ap6 2001:db8:: -exist`",