man firewall-cmd (1): firewalld command line client (2024)

SYNOPSIS

firewall-cmd [OPTIONS...]

DESCRIPTION

firewall-cmd is the command line client of the firewalld daemon. It provides interface to manage runtime and permanent configuration.

The runtime configuration in firewalld is separated from the permanent configuration. This means that things can get changed in the runtime or permanent configuration.

OPTIONS

The following options are supported:

General Options

-h, --help

Prints a short help text and exits.

-V, --version

Print the version string of firewalld. This option is not combinable with other options.

-q, --quiet

Do not print status messages.

Status Options

--state

Check whether the firewalld daemon is active (i.e. running). Returns an exit code 0 if it is active,NOT_RUNNINGotherwise (seethe section called "EXIT CODES"). This will also print the state toSTDOUT.

--reload

Reload firewall rules and keep state information. Current permanent configuration will become new runtime configuration, i.e. all runtime only changes done until reload are lost with reload if they have not been also in permanent configuration.

--complete-reload

Reload firewall completely, even netfilter kernel modules. This will most likely terminate active connections, because state information is lost. This option should only be used in case of severe firewall problems. For example if there are state information problems that no connection can be established with correct firewall rules.

--runtime-to-permanent

Save active runtime configuration and overwrite permanent configuration with it. The way this is supposed to work is that when configuring firewalld you do runtime changes only and once you're happy with the configuration and you tested that it works the way you want, you save the configuration to disk.

--get-log-denied

Print the log denied setting.

--set-log-denied=value

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,multicastandoff. The default setting isoff, which disables the logging.

This is a runtime and permanent change and will also reload the firewall to be able to add the logging rules.

Permanent Options

--permanent

The permanent option--permanentcan be used to set options permanently. These changes are not effective immediately, only after service restart/reload or system reboot. Without the--permanentoption, a change will only be part of the runtime configuration.

If you want to make a change in runtime and permanent configuration, use the same call with and without the--permanentoption.

The--permanentoption can be optionally added to all options further down where it is supported.

Zone Options

--get-default-zone

Print default zone for connections and interfaces.

--set-default-zone=zone

Set default zone for connections and interfaces where no zone has been selected. Setting the default zone changes the zone for the connections or interfaces, that are using the default zone.

This is a runtime and permanent change.

--get-active-zones

Print currently active zones altogether with interfaces and sources used in these zones. Active zones are zones, that have a binding to an interface or source. The output format is:
zone1 interfaces: interface1 interface2 .. sources: source1 ..zone2 interfaces: interface3 ..zone3 sources: source2 .. 

If there are no interfaces or sources bound to the zone, the corresponding line will be omitted.

[--permanent] --get-zones

Print predefined zones as a space separated list.

[--permanent] --get-services

Print predefined services as a space separated list.

[--permanent] --get-icmptypes

Print predefined icmptypes as a space separated list.

[--permanent] --get-zone-of-interface=interface

Print the name of the zone theinterfaceis bound to orno zone.

[--permanent] --get-zone-of-source=source[/mask]

Print the name of the zone thesource[/mask]is bound to orno zone.

[--permanent] --info-zone=zone

Print information about the zonezone. The output format is:
zone interfaces: interface1 .. sources: source1 .. services: service1 .. ports: port1 .. protocols: protocol1 .. forward-ports: forward-port1 .. source-ports: source-port1 .. icmp-blocks: icmp-type1 .. rich rules: rich-rule1 .. 

[--permanent] --list-all-zones

List everything added for or enabled in all zones. The output format is:
zone1 interfaces: interface1 .. sources: source1 .. services: service1 .. ports: port1 .. protocols: protocol1 .. forward-ports: forward-port1 .. icmp-blocks: icmp-type1 .. rich rules: rich-rule1 .... 

--permanent --new-zone=zone

Add a new permanent and empty zone.

--permanent --new-zone-from-file=filename [--name=zone]

Add a new permanent zone from a prepared zone file with an optional name override.

--permanent --delete-zone=zone

Delete an existing permanent zone.

--permanent --load-zone-defaults=zone

Load zone default settings or report NO_DEFAULTS error.

--permanent --zone=zone --set-description=description

Set new description to zone

--permanent --zone=zone --get-description

Print description for zone

--permanent --zone=zone --set-short=description

Set short description to zone

--permanent --zone=zone --get-short

Print short description for zone

--permanent [--zone=zone] --get-target

Get the target of a permanent zone.

--permanent [--zone=zone] --set-target=target

Set the target of a permanent zone.targetis one of:default,ACCEPT,DROP,REJECT

Options to Adapt and Query Zones

Options in this section affect only one particular zone. If used with--zone=zoneoption, they affect the zonezone. If the option is omitted, they affect default zone (see--get-default-zone).

[--permanent] [--zone=zone] --list-all

List everything added for or enabled inzone. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --list-services

List services added forzoneas a space separated list. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --add-service=service [--timeout=timeval]

Add a service forzone. If zone is omitted, default zone will be used. This option can be specified multiple times. If a timeout is supplied, the rule will be active for the specified amount of time and will be removed automatically afterwards.timevalis either a number (of seconds) or number followed by one of characterss(seconds),m(minutes),h(hours), for example20mor1h.

The service is one of the firewalld provided services. To get a list of the supported services, usefirewall-cmd --get-services.

The--timeoutoption is not combinable with the--permanentoption.

[--permanent] [--zone=zone] --remove-service=service

Remove a service fromzone. This option can be specified multiple times. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --query-service=service

Return whetherservicehas been added forzone. If zone is omitted, default zone will be used. Returns 0 if true, 1 otherwise.

[--permanent] [--zone=zone] --list-ports

List ports added forzoneas a space separated list. A port is of the formportid[-portid]/protocol, it can be either a port and protocol pair or a port range with a protocol. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --add-port=portid[-portid]/protocol [--timeout=timeval]

Add the port forzone. If zone is omitted, default zone will be used. This option can be specified multiple times. If a timeout is supplied, the rule will be active for the specified amount of time and will be removed automatically afterwards.timevalis either a number (of seconds) or number followed by one of characterss(seconds),m(minutes),h(hours), for example20mor1h.

The port can either be a single port number or a port rangeportid-portid. The protocol can either betcporudp.

The--timeoutoption is not combinable with the--permanentoption.

[--permanent] [--zone=zone] --remove-port=portid[-portid]/protocol

Remove the port fromzone. If zone is omitted, default zone will be used. This option can be specified multiple times.

[--permanent] [--zone=zone] --query-port=portid[-portid]/protocol

Return whether the port has been added forzone. If zone is omitted, default zone will be used. Returns 0 if true, 1 otherwise.

[--permanent] [--zone=zone] --list-protocols

List protocols added forzoneas a space separated list. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --add-protocol=protocol [--timeout=timeval]

Add the protocol forzone. If zone is omitted, default zone will be used. This option can be specified multiple times. If a timeout is supplied, the rule will be active for the specified amount of time and will be removed automatically afterwards.timevalis either a number (of seconds) or number followed by one of characterss(seconds),m(minutes),h(hours), for example20mor1h.

The protocol can be any protocol supported by the system. Please have a look at/etc/protocolsfor supported protocols.

The--timeoutoption is not combinable with the--permanentoption.

[--permanent] [--zone=zone] --remove-protcol=protocol

Remove the protocol fromzone. If zone is omitted, default zone will be used. This option can be specified multiple times.

[--permanent] [--zone=zone] --query-protocol=protocol

Return whether the protocol has been added forzone. If zone is omitted, default zone will be used. Returns 0 if true, 1 otherwise.

[--permanent] [--zone=zone] --list-source-ports

List source ports added forzoneas a space separated list. A port is of the formportid[-portid]/protocol. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --add-source-port=portid[-portid]/protocol [--timeout=timeval]

Add the source port forzone. If zone is omitted, default zone will be used. This option can be specified multiple times. If a timeout is supplied, the rule will be active for the specified amount of time and will be removed automatically afterwards.timevalis either a number (of seconds) or number followed by one of characterss(seconds),m(minutes),h(hours), for example20mor1h.

The port can either be a single port number or a port rangeportid-portid. The protocol can either betcporudp.

The--timeoutoption is not combinable with the--permanentoption.

[--permanent] [--zone=zone] --remove-source-port=portid[-portid]/protocol

Remove the source port fromzone. If zone is omitted, default zone will be used. This option can be specified multiple times.

[--permanent] [--zone=zone] --query-source-port=portid[-portid]/protocol

Return whether the source port has been added forzone. If zone is omitted, default zone will be used. Returns 0 if true, 1 otherwise.

[--permanent] [--zone=zone] --list-icmp-blocks

List Internet Control Message Protocol (ICMP) type blocks added forzoneas a space separated list. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --add-icmp-block=icmptype [--timeout=timeval]

Add an ICMP block foricmptypeforzone. If zone is omitted, default zone will be used. This option can be specified multiple times. If a timeout is supplied, the rule will be active for the specified amount of time and will be removed automatically afterwards.timevalis either a number (of seconds) or number followed by one of characterss(seconds),m(minutes),h(hours), for example20mor1h.

Theicmptypeis the one of the icmp types firewalld supports. To get a listing of supported icmp types:firewall-cmd --get-icmptypes

The--timeoutoption is not combinable with the--permanentoption.

[--permanent] [--zone=zone] --remove-icmp-block=icmptype

Remove the ICMP block foricmptypefromzone. If zone is omitted, default zone will be used. This option can be specified multiple times.

[--permanent] [--zone=zone] --query-icmp-block=icmptype

Return whether an ICMP block foricmptypehas been added forzone. If zone is omitted, default zone will be used. Returns 0 if true, 1 otherwise.

[--permanent] [--zone=zone] --list-forward-ports

ListIPv4forward ports added forzoneas a space separated list. If zone is omitted, default zone will be used.

ForIPv6forward ports, please use the rich language.

[--permanent] [--zone=zone] --add-forward-port=port=portid[-portid]:proto=protocol[:toport=portid[-portid]][:toaddr=address[/mask]] [--timeout=timeval]

Add theIPv4forward port forzone. If zone is omitted, default zone will be used. This option can be specified multiple times. If a timeout is supplied, the rule will be active for the specified amount of time and will be removed automatically afterwards.timevalis either a number (of seconds) or number followed by one of characterss(seconds),m(minutes),h(hours), for example20mor1h.

The port can either be a single port numberportidor a port rangeportid-portid. The protocol can either betcporudp. The destination address is a simple IP address.

The--timeoutoption is not combinable with the--permanentoption.

ForIPv6forward ports, please use the rich language.

[--permanent] [--zone=zone] --remove-forward-port=port=portid[-portid]:proto=protocol[:toport=portid[-portid]][:toaddr=address[/mask]]

Remove theIPv4forward port fromzone. If zone is omitted, default zone will be used. This option can be specified multiple times.

ForIPv6forward ports, please use the rich language.

[--permanent] [--zone=zone] --query-forward-port=port=portid[-portid]:proto=protocol[:toport=portid[-portid]][:toaddr=address[/mask]]

Return whether theIPv4forward port has been added forzone. If zone is omitted, default zone will be used. Returns 0 if true, 1 otherwise.

ForIPv6forward ports, please use the rich language.

[--permanent] [--zone=zone] --add-masquerade [--timeout=timeval]

EnableIPv4masquerade forzone. If zone is omitted, default zone will be used. If a timeout is supplied, masquerading will be active for the specified amount of time.timevalis either a number (of seconds) or number followed by one of characterss(seconds),m(minutes),h(hours), for example20mor1h. Masquerading is useful if the machine is a router and machines connected over an interface in another zone should be able to use the first connection.

The--timeoutoption is not combinable with the--permanentoption.

ForIPv6masquerading, please use the rich language.

[--permanent] [--zone=zone] --remove-masquerade

DisableIPv4masquerade forzone. If zone is omitted, default zone will be used. If the masquerading was enabled with a timeout, it will be disabled also.

ForIPv6masquerading, please use the rich language.

[--permanent] [--zone=zone] --query-masquerade

Return whetherIPv4masquerading has been enabled forzone. If zone is omitted, default zone will be used. Returns 0 if true, 1 otherwise.

ForIPv6masquerading, please use the rich language.

[--permanent] [--zone=zone] --list-rich-rules

List rich language rules added forzoneas a newline separated list. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --add-rich-rule='rule' [--timeout=timeval]

Add rich language rule 'rule' forzone. This option can be specified multiple times. If zone is omitted, default zone will be used. If a timeout is supplied, therulewill be active for the specified amount of time and will be removed automatically afterwards.timevalis either a number (of seconds) or number followed by one of characterss(seconds),m(minutes),h(hours), for example20mor1h.

For the rich language rule syntax, please have a look atfirewalld.richlanguage(5).

The--timeoutoption is not combinable with the--permanentoption.

[--permanent] [--zone=zone] --remove-rich-rule='rule'

Remove rich language rule 'rule' fromzone. This option can be specified multiple times. If zone is omitted, default zone will be used.

For the rich language rule syntax, please have a look atfirewalld.richlanguage(5).

[--permanent] [--zone=zone] --query-rich-rule='rule'

Return whether a rich language rule 'rule' has been added forzone. If zone is omitted, default zone will be used. Returns 0 if true, 1 otherwise.

For the rich language rule syntax, please have a look atfirewalld.richlanguage(5).

Options to Handle Bindings of Interfaces

Binding an interface to a zone means that this zone settings are used to restrict traffic via the interface.

Options in this section affect only one particular zone. If used with--zone=zoneoption, they affect the zonezone. If the option is omitted, they affect default zone (see--get-default-zone).

For a list of predefined zones usefirewall-cmd --get-zones.

An interface name is a string up to 16 characters long, that may not contain' ','/','!'and'*'.

[--permanent] [--zone=zone] --list-interfaces

List interfaces that are bound to zonezoneas a space separated list. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --add-interface=interface

Bind interfaceinterfaceto zonezone. If zone is omitted, default zone will be used.

If the interface is under control of NetworkManager, it is at first connected to change the zone for the connection that is using the interface. If this fails, the zone binding is created in firewalld and the limitations below apply. For interfaces that are not under control of NetworkManager, firewalld tries to change the ZONE setting in the ifcfg file, if the file exists.

As a end user you don't need this in most cases, because NetworkManager (or legacy network service) adds interfaces into zones automatically (according toZONE=option from ifcfg-interfacefile) ifNM_CONTROLLED=nois not set. You should do it only if there's no /etc/sysconfig/network-scripts/ifcfg-interfacefile. If there is such file and you add interface to zone with this--add-interfaceoption, make sure the zone is the same in both cases, otherwise the behaviour would be undefined. Please also have a look at thefirewalld(1)man page in theConceptssection. For permanent association of interface with a zone, see also 'How to set or change a zone for a connection?' infirewalld.zones(5).

[--zone=zone] --change-interface=interface

If the interface is under control of NetworkManager, it is at first connected to change the zone for the connection that is using the interface. If this fails, the zone binding is created in firewalld and the limitations below apply. For interfaces that are not under control of NetworkManager, firewalld tries to change the ZONE setting in the ifcfg file, if the file exists.

Change zone the interfaceinterfaceis bound to to zonezone. It's basically--remove-interfacefollowed by--add-interface. If the interface has not been bound to a zone before, it behaves like--add-interface. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --query-interface=interface

Query whether interfaceinterfaceis bound to zonezone. Returns 0 if true, 1 otherwise.

[--permanent] --remove-interface=interface

If the interface is under control of NetworkManager, it is at first connected to change the zone for the connection that is using the interface. If this fails, the zone binding is created in firewalld and the limitations below apply. For interfaces that are not under control of NetworkManager, firewalld tries to change the ZONE setting in the ifcfg file, if the file exists.

Remove binding of interfaceinterfacefrom zone it was previously added to.

Options to Handle Bindings of Sources

Binding a source to a zone means that this zone settings will be used to restrict traffic from this source.

A source address or address range is either an IP address or a network IP address with a mask for IPv4 or IPv6 or a MAC address (no mask). For IPv4, the mask can be a network mask or a plain number. For IPv6 the mask is a plain number. The use of host names is not supported.

Options in this section affect only one particular zone. If used with--zone=zoneoption, they affect the zonezone. If the option is omitted, they affect default zone (see--get-default-zone).

For a list of predefined zones usefirewall-cmd [--permanent] --get-zones.

[--permanent] [--zone=zone] --list-sources

List sources that are bound to zonezoneas a space separated list. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --add-source=source[/mask]

Bind sourcesource[/mask]to zonezone. If zone is omitted, default zone will be used.

[--zone=zone] --change-source=source[/mask]

Change zone the sourcesource[/mask]is bound to to zonezone. It's basically--remove-sourcefollowed by--add-source. If the source has not been bound to a zone before, it behaves like--add-source. If zone is omitted, default zone will be used.

[--permanent] [--zone=zone] --query-source=source[/mask]

Query whether the sourcesource[/mask]is bound to the zonezone. Returns 0 if true, 1 otherwise.

[--permanent] --remove-source=source[/mask]

Remove binding of sourcesource[/mask]from zone it was previously added to.

IPSet Options

--permanent --new-ipset=ipset --type=ipset type [--option=ipset option[=value]]

Add a new permanent and empty ipset with specifying the type and optional options.

--permanent --new-ipset-from-file=filename [--name=ipset]

Add a new permanent ipset from a prepared ipset file with an optional name override.

--permanent --delete-ipset=ipset

Delete an existing permanent ipset.

--permanent --load-ipset-defaults=ipset

Load ipset default settings or report NO_DEFAULTS error.

[--permanent] --info-ipset=ipset

Print information about the ipsetipset. The output format is:
ipset type: type options: option1[=value1] .. entries: entry1 .. 

[--permanent] --get-ipsets

Print predefined ipsets as a space separated list.

--permanent --ipset=ipset --set-description=description

Set new description to ipset

--permanent --ipset=ipset --get-description

Print description for ipset

--permanent --ipset=ipset --set-short=description

Set short description to ipset

--permanent --ipset=ipset --get-short

Print short description for ipset

[--permanent] --ipset=ipset --add-entry=entry

Add a new entry to the ipset.

[--permanent] --ipset=ipset --remove-entry=entry

Remove an entry from the ipset.

[--permanent] --ipset=ipset --query-entry=entry

Return whether the entry has been added to an ipset. Returns 0 if true, 1 otherwise.

[--permanent] --ipset=ipset --get-entries

List all entries of the ipset.

[--permanent] --ipset=ipset --add-entries-from-file=filename

Add a new entries to the ipset from the file. For all entries that are listed in the file but already in the ipset, a warning will be printed.

The file should contain an entry per line. Lines starting with an hash or semicolon are ignored. Also empty lines.

[--permanent] --ipset=ipset --remove-entries-from-file=filename

Remove existing entries from the ipset from the file. For all entries that are listed in the file but not in the ipset, a warning will be printed.

The file should contain an entry per line. Lines starting with an hash or semicolon are ignored. Also empty lines.

Service Options

Options in this section affect only one particular service.

[--permanent] --info-service=service

Print information about the serviceservice. The output format is:
service ports: port1 .. protocols: protocol1 .. source-ports: source-port1 .. modules: module1 .. destination: ipv1:address1 .. 

The following options are only usable in the permanent configuration.

--permanent --new-service=service

Add a new permanent and empty service.

--permanent --new-service-from-file=filename [--name=service]

Add a new permanent service from a prepared service file with an optional name override.

--permanent --delete-service=service

Delete an existing permanent service.

--permanent --load-service-defaults=service

Load service default settings or report NO_DEFAULTS error.

--permanent --service=service --set-description=description

Set new description to service

--permanent --service=service --get-description

Print description for service

--permanent --service=service --set-short=description

Set short description to service

--permanent --service=service --get-short

Print short description for service

--permanent --service=service --add-port=portid[-portid]/protocol

Add a new port to the permanent service.

--permanent --service=service --remove-port=portid[-portid]/protocol

Remove a port from the permanent service.

--permanent --service=service --query-port=portid[-portid]/protocol

Return wether the port has been added to the permanent service.

--permanent --service=service --get-ports

List ports added to the permanent service.

--permanent --service=service --add-protocol=protocol

Add a new protocol to the permanent service.

--permanent --service=service --remove-protocol=protocol

Remove a protocol from the permanent service.

--permanent --service=service --query-protocol=protocol

Return wether the protocol has been added to the permanent service.

--permanent --service=service --get-protocols

List protocols added to the permanent service.

--permanent --service=service --add-source-port=portid[-portid]/protocol

Add a new source port to the permanent service.

--permanent --service=service --remove-source-port=portid[-portid]/protocol

Remove a source port from the permanent service.

--permanent --service=service --query-source-port=portid[-portid]/protocol

Return wether the source port has been added to the permanent service.

--permanent --service=service --get-source-ports

List source ports added to the permanent service.

--permanent --service=service --add-module=module

Add a new module to the permanent service.

--permanent --service=service --remove-module=module

Remove a module from the permanent service.

--permanent --service=service --query-module=module

Return wether the module has been added to the permanent service.

--permanent --service=service --get-modules

List modules added to the permanent service.

--permanent --service=service --set-destination=ipv:address[/mask]

Set destination for ipv to address[/mask] in the permanent service.

--permanent --service=service --remove-destination=ipv

Remove the destination for ipv from the permanent service.

--permanent --service=service --query-destination=ipv:address[/mask]

Return wether the destination ipv to address[/mask] has been set in the permanent service.

--permanent --service=service --get-destinations

List destinations added to the permanent service.

Internet Control Message Protocol (ICMP) type Options

Options in this section affect only one particular icmptype.

[--permanent] --info-icmptype=icmptype

Print information about the icmptypeicmptype. The output format is:
icmptype destination: ipv1 .. 

The following options are only usable in the permanent configuration.

--permanent --new-icmptype=icmptype

Add a new permanent and empty icmptype.

--permanent --new-icmptype-from-file=filename [--name=icmptype]

Add a new permanent icmptype from a prepared icmptype file with an optional name override.

--permanent --delete-icmptype=icmptype

Delete an existing permanent icmptype.

--permanent --load-icmptype-defaults=icmptype

Load icmptype default settings or report NO_DEFAULTS error.

--permanent --icmptype=icmptype --set-description=description

Set new description to icmptype

--permanent --icmptype=icmptype --get-description

Print description for icmptype

--permanent --icmptype=icmptype --set-short=description

Set short description to icmptype

--permanent --icmptype=icmptype --get-short

Print short description for icmptype

--permanent --icmptype=icmptype --add-destination=ipv

Enable destination for ipv in permanent icmptype. ipv is one ofipv4oripv6.

--permanent --icmptype=icmptype --remove-destination=ipv

Disable destination for ipv in permanent icmptype. ipv is one ofipv4oripv6.

--permanent --icmptype=icmptype --query-destination=ipv

Return whether destination for ipv is enabled in permanent icmptype. ipv is one ofipv4oripv6.

--permanent --icmptype=icmptype --get-destinations

List destinations in permanent icmptype.

Direct Options

The direct options give a more direct access to the firewall. These options require user to know basic iptables concepts, i.e.table(filter/mangle/nat/...),chain(INPUT/OUTPUT/FORWARD/...),commands(-A/-D/-I/...),parameters(-p/-s/-d/-j/...) andtargets(ACCEPT/DROP/REJECT/...).

Direct options should be used only as a last resort when it's not possible to use for example--add-service=serviceor--add-rich-rule='rule'.

The first argument of each option has to beipv4oripv6oreb. Withipv4it will be for IPv4 (iptables(8)), withipv6for IPv6 (ip6tables(8)) and withebfor ethernet bridges (ebtables(8)).

[--permanent] --direct --get-all-chains

Get all chains added to all tables. This option concerns only chains previously added with--direct --add-chain.

[--permanent] --direct --get-chains { ipv4 | ipv6 | eb } table

Get all chains added to tabletableas a space separated list. This option concerns only chains previously added with--direct --add-chain.

[--permanent] --direct --add-chain { ipv4 | ipv6 | eb } table chain

Add a new chain with namechainto tabletable. Make sure there's no other chain with this name already.

There already exist basic chains to use with direct options, for exampleINPUT_directchain (seeiptables-save | grep directoutput for all of them). These chains are jumped into before chains for zones, i.e. every rule put intoINPUT_directwill be checked before rules in zones.

[--permanent] --direct --remove-chain { ipv4 | ipv6 | eb } table chain

Remove chain with namechainfrom tabletable. Only chains previously added with--direct --add-chaincan be removed this way.

[--permanent] --direct --query-chain { ipv4 | ipv6 | eb } table chain

Return whether a chain with namechainexists in tabletable. Returns 0 if true, 1 otherwise. This option concerns only chains previously added with--direct --add-chain.

[--permanent] --direct --get-all-rules

Get all rules added to all chains in all tables as a newline separated list of the priority and arguments. This option concerns only rules previously added with--direct --add-rule.

[--permanent] --direct --get-rules { ipv4 | ipv6 | eb } table chain

Get all rules added to chainchainin tabletableas a newline separated list of the priority and arguments. This option concerns only rules previously added with--direct --add-rule.

[--permanent] --direct --add-rule { ipv4 | ipv6 | eb } table chain priority args

Add a rule with the argumentsargsto chainchainin tabletablewith prioritypriority.

Thepriorityis used to order rules. Priority 0 means add rule on top of the chain, with a higher priority the rule will be added further down. Rules with the same priority are on the same level and the order of these rules is not fixed and may change. If you want to make sure that a rule will be added after another one, use a low priority for the first and a higher for the following.

[--permanent] --direct --remove-rule { ipv4 | ipv6 | eb } table chain priority args

Remove a rule withpriorityand the argumentsargsfrom chainchainin tabletable. Only rules previously added with--direct --add-rulecan be removed this way.

[--permanent] --direct --remove-rules { ipv4 | ipv6 | eb } table chain

Remove all rules in the chain with namechainexists in tabletable. This option concerns only rules previously added with--direct --add-rulein this chain.

[--permanent] --direct --query-rule { ipv4 | ipv6 | eb } table chain priority args

Return whether a rule withpriorityand the argumentsargsexists in chainchainin tabletable. Returns 0 if true, 1 otherwise. This option concerns only rules previously added with--direct --add-rule.

--direct --passthrough { ipv4 | ipv6 | eb } args

Pass a command through to the firewall.argscan be alliptables,ip6tablesandebtablescommand line arguments. This command is untracked, which means that firewalld is not able to provide information about this command later on, also not a listing of the untracked passthoughs.

[--permanent] --direct --get-all-passthroughs

Get all passthrough rules as a newline separated list of the ipv value and arguments.

[--permanent] --direct --get-passthroughs { ipv4 | ipv6 | eb }

Get all passthrough rules for the ipv value as a newline separated list of the priority and arguments.

[--permanent] --direct --add-passthrough { ipv4 | ipv6 | eb } args

Add a passthrough rule with the argumentsargsfor the ipv value.

[--permanent] --direct --remove-passthrough { ipv4 | ipv6 | eb } args

Remove a passthrough rule with the argumentsargsfor the ipv value.

[--permanent] --direct --query-passthrough { ipv4 | ipv6 | eb } args

Return whether a passthrough rule with the argumentsargsexists for the ipv value. Returns 0 if true, 1 otherwise.

Lockdown Options

Local applications or services are able to change the firewall configuration if they are running as root (example: libvirt) or are authenticated using PolicyKit. With this feature administrators can lock the firewall configuration so that only applications on lockdown whitelist are able to request firewall changes.

The lockdown access check limits D-Bus methods that are changing firewall rules. Query, list and get methods are not limited.

The lockdown feature is a very light version of user and application policies for firewalld and is turned off by default.

--lockdown-on

Enable lockdown. Be careful - if firewall-cmd is not on lockdown whitelist when you enable lockdown you won't be able to disable it again with firewall-cmd, you would need to edit firewalld.conf.

This is a runtime and permanent change.

--lockdown-off

Disable lockdown.

This is a runtime and permanent change.

--query-lockdown

Query whether lockdown is enabled. Returns 0 if lockdown is enabled, 1 otherwise.

Lockdown Whitelist Options

The lockdown whitelist can containcommands,contexts,usersanduser ids.

If a command entry on the whitelist ends with an asterisk '*', then all command lines starting with the command will match. If the '*' is not there the absolute command inclusive arguments must match.

Commands for user root and others is not always the same. Example: As root/bin/firewall-cmdis used, as a normal user/usr/bin/firewall-cmdis be used on Fedora.

The context is the security (SELinux) context of a running application or service. To get the context of a running application useps -e --context.

Warning:If the context is unconfined, then this will open access for more than the desired application.

The lockdown whitelist entries are checked in the following order:

1. context
2. uid
3. user
4. command

[--permanent] --list-lockdown-whitelist-commands

List all command lines that are on the whitelist.

[--permanent] --add-lockdown-whitelist-command=command

Add thecommandto the whitelist.

[--permanent] --remove-lockdown-whitelist-command=command

Remove thecommandfrom the whitelist.

[--permanent] --query-lockdown-whitelist-command=command

Query whether thecommandis on the whitelist. Returns 0 if true, 1 otherwise.

[--permanent] --list-lockdown-whitelist-contexts

List all contexts that are on the whitelist.

[--permanent] --add-lockdown-whitelist-context=context

Add the contextcontextto the whitelist.

[--permanent] --remove-lockdown-whitelist-context=context

Remove thecontextfrom the whitelist.

[--permanent] --query-lockdown-whitelist-context=context

Query whether thecontextis on the whitelist. Returns 0 if true, 1 otherwise.

[--permanent] --list-lockdown-whitelist-uids

List all user ids that are on the whitelist.

[--permanent] --add-lockdown-whitelist-uid=uid

Add the user iduidto the whitelist.

[--permanent] --remove-lockdown-whitelist-uid=uid

Remove the user iduidfrom the whitelist.

[--permanent] --query-lockdown-whitelist-uid=uid

Query whether the user iduidis on the whitelist. Returns 0 if true, 1 otherwise.

[--permanent] --list-lockdown-whitelist-users

List all user names that are on the whitelist.

[--permanent] --add-lockdown-whitelist-user=user

Add the user nameuserto the whitelist.

[--permanent] --remove-lockdown-whitelist-user=user

Remove the user nameuserfrom the whitelist.

[--permanent] --query-lockdown-whitelist-user=user

Query whether the user nameuseris on the whitelist. Returns 0 if true, 1 otherwise.

Panic Options

--panic-on

Enable panic mode. All incoming and outgoing packets are dropped, active connections will expire. Enable this only if there are serious problems with your network environment. For example if the machine is getting hacked in.

This is a runtime only change.

--panic-off

Disable panic mode. After disabling panic mode established connections might work again, if panic mode was enabled for a short period of time.

This is a runtime only change.

--query-panic

Returns 0 if panic mode is enabled, 1 otherwise.

EXAMPLES

For more examples seem[blue]http://fedoraproject.org/wiki/FirewallDm[]

Example 1

Enable http service in default zone. This is runtime only change, i.e. effective until restart.

firewall-cmd --add-service=http 

Example 2

Enable port 443/tcp immediately and permanently in default zone. To make the change effective immediately and also after restart we need two commands. The first command makes the change in runtime configuration, i.e. makes it effective immediately, until restart. The second command makes the change in permanent configuration, i.e. makes it effective after restart.

firewall-cmd --add-port=443/tcpfirewall-cmd --permanent --add-port=443/tcp 

EXIT CODES

On success 0 is returned. On failure the output is red colored and exit code is either 2 in case of wrong command-line option usage or one of the following error codes in other cases:

StringCode
ALREADY_ENABLED11
NOT_ENABLED12
COMMAND_FAILED13
NO_IPV6_NAT14
PANIC_MODE15
ZONE_ALREADY_SET16
UNKNOWN_INTERFACE17
ZONE_CONFLICT18
BUILTIN_CHAIN19
EBTABLES_NO_REJECT20
NOT_OVERLOADABLE21
NO_DEFAULTS22
BUILTIN_ZONE23
BUILTIN_SERVICE24
BUILTIN_ICMPTYPE25
NAME_CONFLICT26
NAME_MISMATCH27
PARSE_ERROR28
ACCESS_DENIED29
UNKNOWN_SOURCE30
RT_TO_PERM_FAILED31
IPSET_WITH_TIMEOUT32
BUILTIN_IPSET33
ALREADY_SET34
MISSING_IMPORT35
INVALID_ACTION100
INVALID_SERVICE101
INVALID_PORT102
INVALID_PROTOCOL103
INVALID_INTERFACE104
INVALID_ADDR105
INVALID_FORWARD106
INVALID_ICMPTYPE107
INVALID_TABLE108
INVALID_CHAIN109
INVALID_TARGET110
INVALID_IPV111
INVALID_ZONE112
INVALID_PROPERTY113
INVALID_VALUE114
INVALID_OBJECT115
INVALID_NAME116
INVALID_FILENAME117
INVALID_DIRECTORY118
INVALID_TYPE119
INVALID_SETTING120
INVALID_DESTINATION121
INVALID_RULE122
INVALID_LIMIT123
INVALID_FAMILY124
INVALID_LOG_LEVEL125
INVALID_AUDIT_TYPE126
INVALID_MARK127
INVALID_CONTEXT128
INVALID_COMMAND129
INVALID_USER130
INVALID_UID131
INVALID_MODULE132
INVALID_PASSTHROUGH133
INVALID_MAC134
INVALID_IPSET135
INVALID_ENTRY136
INVALID_OPTION137
MISSING_TABLE200
MISSING_CHAIN201
MISSING_PORT202
MISSING_PROTOCOL203
MISSING_ADDR204
MISSING_NAME205
MISSING_SETTING206
MISSING_FAMILY207
NOT_RUNNING252
NOT_AUTHORIZED253
UNKNOWN_ERROR254

NOTES

firewalld home page:

m[blue]http://www.firewalld.orgm[]

More documentation with examples:

m[blue]http://fedoraproject.org/wiki/FirewallDm[]

AUTHORS

Thomas Woerner <[emailprotected]>

Developer

Jiri Popelka <[emailprotected]>

Developer
man firewall-cmd (1): firewalld command line client (2024)
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