Provided by: firewalld_1.3.0-1_all bug


       firewalld.conf - firewalld configuration file




       firewalld.conf is loaded by firewalld during the initialization process. The file contains
       the basic configuration options for firewalld.


       These are the options that can be set in the config file:

           This sets the default zone for connections or interfaces if the zone is not selected
           or specified by NetworkManager, initscripts or command line tool. The default zone is

           Deprecated. This option is ignored and no longer used. Marks are no longer used

           Setting this option to yes or true unloads all firewall-related kernel modules when
           firewalld is stopped. The default value is no or false.

           If firewalld stops, it cleans up all firewall rules. Setting this option to no or
           false leaves the current firewall rules untouched. The default value is yes or true.

           If this option is enabled, firewall changes with the D-Bus interface will be limited
           to applications that are listed in the lockdown whitelist (see firewalld.lockdown-
           whitelist(5)). The default value is no or false.

           If this option is enabled (it is by default), reverse path filter test on a packet for
           IPv6 is performed. If a reply to the packet would be sent via the same interface that
           the packet arrived on, the packet will match and be accepted, otherwise dropped. For
           IPv4 the rp_filter is controlled using sysctl.

           Note: This feature has a performance impact. In most cases the impact is not enough to
           cause a noticeable difference. It requires route lookups and its execution occurs
           before the established connections fast path. As such it can have a significant
           performance impact if there is a lot of traffic. It's enabled by default for security,
           but can be disabled if performance is a concern.

           If this option is disabled (it is by default), combined -restore calls are used and
           not individual calls to apply changes to the firewall. The use of individual calls
           increases the time that is needed to apply changes and to start the daemon, but is
           good for debugging as error messages are more specific.

           Add logging rules right before reject and drop rules in the INPUT, FORWARD and OUTPUT
           chains for the default rules and also final reject and drop rules in zones for the
           configured link-layer packet type. The possible values are: all, unicast, broadcast,
           multicast and off. The default setting is off, which disables the logging.

           Deprecated. This option is ignored and no longer used.

           Selects the firewall backend implementation. Possible values are; nftables (default),
           or iptables. This applies to all firewalld primitives. The only exception is direct
           and passthrough rules which always use the traditional iptables, ip6tables, and
           ebtables backends.

           Note: The iptables backend is deprecated. It will be removed in a future release.

           Flush all runtime rules on a reload. In previous releases some runtime configuration
           was retained during a reload, namely; interface to zone assignment, and direct rules.
           This was confusing to users. To get the old behavior set this to "no". Defaults to

           As per RFC 3964, filter IPv6 traffic with 6to4 destination addresses that correspond
           to IPv4 addresses that should not be routed over the public internet. Defaults to

           Deprecated. This option is ignored and no longer used.


       firewall-applet(1), firewalld(1), firewall-cmd(1), firewall-config(1), firewalld.conf(5),, firewalld.dbus(5), firewalld.icmptype(5), firewalld.lockdown-
       whitelist(5), firewall-offline-cmd(1), firewalld.richlanguage(5), firewalld.service(5),, firewalld.zones(5), firewalld.policy(5), firewalld.policies(5),
       firewalld.ipset(5), firewalld.helper(5)


       firewalld home page:

       More documentation with examples:


       Thomas Woerner <>

       Jiri Popelka <>

       Eric Garver <>