SYNOPSIS
- firewall-cmd [OPTIONS...]
DESCRIPTION
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.
See Alsofirewalld(1) — firewalld — Debian bullseye — Debian Manpagesfirewalld-cmd Command in Linux: 24 ExamplesSecure your Linux network with firewall-cmdThe--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:
String | Code |
ALREADY_ENABLED | 11 |
NOT_ENABLED | 12 |
COMMAND_FAILED | 13 |
NO_IPV6_NAT | 14 |
PANIC_MODE | 15 |
ZONE_ALREADY_SET | 16 |
UNKNOWN_INTERFACE | 17 |
ZONE_CONFLICT | 18 |
BUILTIN_CHAIN | 19 |
EBTABLES_NO_REJECT | 20 |
NOT_OVERLOADABLE | 21 |
NO_DEFAULTS | 22 |
BUILTIN_ZONE | 23 |
BUILTIN_SERVICE | 24 |
BUILTIN_ICMPTYPE | 25 |
NAME_CONFLICT | 26 |
NAME_MISMATCH | 27 |
PARSE_ERROR | 28 |
ACCESS_DENIED | 29 |
UNKNOWN_SOURCE | 30 |
RT_TO_PERM_FAILED | 31 |
IPSET_WITH_TIMEOUT | 32 |
BUILTIN_IPSET | 33 |
ALREADY_SET | 34 |
MISSING_IMPORT | 35 |
INVALID_ACTION | 100 |
INVALID_SERVICE | 101 |
INVALID_PORT | 102 |
INVALID_PROTOCOL | 103 |
INVALID_INTERFACE | 104 |
INVALID_ADDR | 105 |
INVALID_FORWARD | 106 |
INVALID_ICMPTYPE | 107 |
INVALID_TABLE | 108 |
INVALID_CHAIN | 109 |
INVALID_TARGET | 110 |
INVALID_IPV | 111 |
INVALID_ZONE | 112 |
INVALID_PROPERTY | 113 |
INVALID_VALUE | 114 |
INVALID_OBJECT | 115 |
INVALID_NAME | 116 |
INVALID_FILENAME | 117 |
INVALID_DIRECTORY | 118 |
INVALID_TYPE | 119 |
INVALID_SETTING | 120 |
INVALID_DESTINATION | 121 |
INVALID_RULE | 122 |
INVALID_LIMIT | 123 |
INVALID_FAMILY | 124 |
INVALID_LOG_LEVEL | 125 |
INVALID_AUDIT_TYPE | 126 |
INVALID_MARK | 127 |
INVALID_CONTEXT | 128 |
INVALID_COMMAND | 129 |
INVALID_USER | 130 |
INVALID_UID | 131 |
INVALID_MODULE | 132 |
INVALID_PASSTHROUGH | 133 |
INVALID_MAC | 134 |
INVALID_IPSET | 135 |
INVALID_ENTRY | 136 |
INVALID_OPTION | 137 |
MISSING_TABLE | 200 |
MISSING_CHAIN | 201 |
MISSING_PORT | 202 |
MISSING_PROTOCOL | 203 |
MISSING_ADDR | 204 |
MISSING_NAME | 205 |
MISSING_SETTING | 206 |
MISSING_FAMILY | 207 |
NOT_RUNNING | 252 |
NOT_AUTHORIZED | 253 |
UNKNOWN_ERROR | 254 |
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