1FIREWALLD.CONF(5) firewalld.conf FIREWALLD.CONF(5)
2
6 firewalld.conf - firewalld configuration file
7
9 /etc/firewalld/firewalld.conf
10
14 firewalld.conf is loaded by firewalld during the initialization
15 process. The file contains the basic configuration options for
16 firewalld.
17
19 These are the options that can be set in the config file:
20 DefaultZone
22 This sets the default zone for connections or interfaces if the
23 zone is not selected or specified by NetworkManager, initscripts or
24 command line tool. The default zone is public.
25 MinimalMark
27 Deprecated. This option is ignored and no longer used. Marks are no
28 longer used internally.
29 CleanupModulesOnExit
31 Setting this option to yes or true unloads all firewall-related
32 kernel modules when firewalld is stopped. The default value is no
33 or false.
34 CleanupOnExit
36 If firewalld stops, it cleans up all firewall rules. Setting this
37 option to no or false leaves the current firewall rules untouched.
38 The default value is yes or true.
39 Lockdown
41 If this option is enabled, firewall changes with the D-Bus
42 interface will be limited to applications that are listed in the
43 lockdown whitelist (see firewalld.lockdown-whitelist(5)). The
44 default value is no or false.
45 IPv6_rpfilter
47 If this option is enabled (it is by default), reverse path filter
48 test on a packet for IPv6 is performed. If a reply to the packet
49 would be sent via the same interface that the packet arrived on,
50 the packet will match and be accepted, otherwise dropped. For IPv4
51 the rp_filter is controlled using sysctl.
52 Note: This feature has a performance impact. In most cases the
54 impact is not enough to cause a noticeable difference. It requires
55 route lookups and its execution occurs before the established
56 connections fast path. As such it can have a significant
57 performance impact if there is a lot of traffic. It's enabled by
58 default for security, but can be disabled if performance is a
59 concern.
60 IndividualCalls
62 If this option is disabled (it is by default), combined -restore
63 calls are used and not individual calls to apply changes to the
64 firewall. The use of individual calls increases the time that is
65 needed to apply changes and to start the daemon, but is good for
66 debugging as error messages are more specific.
67 LogDenied
69 Add logging rules right before reject and drop rules in the INPUT,
70 FORWARD and OUTPUT chains for the default rules and also final
71 reject and drop rules in zones for the configured link-layer packet
72 type. The possible values are: all, unicast, broadcast, multicast
73 and off. The default setting is off, which disables the logging.
74 AutomaticHelpers
76 Deprecated. This option is ignored and no longer used.
77 FirewallBackend
79 Selects the firewall backend implementation. Possible values are;
80 nftables (default), or iptables. This applies to all firewalld
81 primitives. The only exception is direct and passthrough rules
82 which always use the traditional iptables, ip6tables, and ebtables
83 backends.
84 Note: The iptables backend is deprecated. It will be removed in a
86 future release.
87 FlushAllOnReload
89 Flush all runtime rules on a reload. In previous releases some
90 runtime configuration was retained during a reload, namely;
91 interface to zone assignment, and direct rules. This was confusing
92 to users. To get the old behavior set this to "no". Defaults to
93 "yes".
94 RFC3964_IPv4
96 As per RFC 3964, filter IPv6 traffic with 6to4 destination
97 addresses that correspond to IPv4 addresses that should not be
98 routed over the public internet. Defaults to "yes".
99 AllowZoneDrifting
101 Deprecated. This option is ignored and no longer used.
102 NftablesFlowtable
104 This may improve forwarded traffic throughput by enabling nftables
105 flowtable. It is a software fastpath and avoids calling nftables
106 rule evaluation for data packets. Its value is a space separate
107 list of interfaces. Example value "eth0 eth1". Defaults to "off".
108 NftablesCounters
110 If set to yes, add a counter to every nftables rule. This is useful
111 for debugging and comes with a small performance cost. Defaults to
112 "no".
113
115 firewall-applet(1), firewalld(1), firewall-cmd(1), firewall-config(1),
116 firewalld.conf(5), firewalld.direct(5), firewalld.dbus(5),
117 firewalld.icmptype(5), firewalld.lockdown-whitelist(5), firewall-
118 offline-cmd(1), firewalld.richlanguage(5), firewalld.service(5),
119 firewalld.zone(5), firewalld.zones(5), firewalld.policy(5),
120 firewalld.policies(5), firewalld.ipset(5), firewalld.helper(5)
121
123 firewalld home page:
124 http://firewalld.org
125 More documentation with examples:
127 http://fedoraproject.org/wiki/FirewallD
128
130 Thomas Woerner <twoerner@redhat.com>
131 Developer
132 Jiri Popelka <jpopelka@redhat.com>
134 Developer
135 Eric Garver <eric@garver.life>
137 Developer
138firewalld 2.0.2 FIREWALLD.CONF(5)